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Dual USB Port Power Supply Controller
ISL6185
The ISL6185 USB power controller family provides fully independent overcurrent (OC) fault protection for two or more USB ports. This product family consists of sixteen individual functional product variants and three package options and is operation rated for a nominal +2.5V to +5V range and specified over the full commercial and industrial temperature ranges. Each ISL6185 type incorporates in a single package two 71m P-channel MOSFET power switches for power control and features internal current monitoring, accurate current limiting and current limited delay to turn-off for system supply protection along with control and communication I/O. The ISL6185 family offers product variants with specified continuous output current levels of 0.6A, 1.1A, 1.5A or 1.8A, enable active high or low inputs and latch off or automatic retry after over current turn-off making these devices well suited for many low power applications. This family of ICs is offered in an industry std. SOIC pinout and also in the 70% smaller 3x3 DFN packages providing similar or enhanced performance in the smallest possible package.
ISL6185
Features
* 2.5V to 5V Operating Range * 71m Integrated Power P-channel MOSFET Switches * Continuous Current Options for 0.6A, 1.1A, 1.5A and 1.8A * Thermally insensitive 12ms of Current Limiting Prior to Turn-Off * Output Discharges with Reverse Current Blocking when Disabled * Latch-off or Auto Restart Options * 1A Off-State Supply Current. * Enable Polarity Options * Industry Std Pin for Pin SOIC and Smaller DFN Pkgs Available
Applications
* USB 1, 2, 3 Port Power Management * Low Power (18W) Electronic Circuit Limiting and Breaker
Typical Application
D+ DU S B C O N T R O L L E R USB PORT 1 VBUS
Normalized rDS(ON) Temperature Characteristic Curve
1.3 NORMALIZED rDS(ON) 1.2 1.1 1.0 0.9 0.8 0.7 -40 -25 0 25 45 75 TEMPERATURE (C) 85 115
ENABLE_1 FAULT_1 +5V VIN
OUT_1
GND ISL6185
FAULT_2 ENABLE_2 OUT_2 VBUS USB PORT_2
D+ DUSB PORT POWER
October 22, 2010 FN6937.0
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CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright (c) Intersil Americas Inc. 2010. All Rights Reserved All other trademarks mentioned are the property of their respective owners.
ISL6185
Simplified Block Diagram
CHANNEL 1 LIKE CHANNEL 2 GND
+ -V comp
FAULT_1
VIN
OUT_1
POR EN_1 CURRENT AND TEMP. MONITORING, GATE, DELAY & OUTPUT CONTROL LOGIC OUT_2
EN_2
FAULT_2
Ordering Information
PART NUMBER (Notes 1, 2, 3) ISL61851ACBZ ISL61851BCBZ ISL61851CCBZ ISL61851DCBZ ISL61851ECBZ ISL61851FCBZ ISL61851GCBZ ISL61851HCBZ ISL61851ICBZ ISL61851JCBZ ISL61851KCBZ ISL61851LCBZ ISL61852ACRZ ISL61852BCRZ ISL61852CCRZ ISL61852DCRZ ISL61852ECRZ ISL61852FCRZ PART MARKING 61851A CBZ 61851B CBZ 61851C CBZ 61851D CBZ 61851E CBZ 61851F CBZ 61851G CBZ 61851H CBZ 61851I CBZ 61851J CBZ 61851K CBZ 61851L CBZ 52AC 52BC 52CC 52DC 52EC 52FC EN/EN INPUT EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN VIN = 5V MAXIMUM CONTINUOUS LATCH/AUTO IOUT (A) RETRY 0.6 0.6 1.1 1.1 0.6 0.6 1.1 1.1 1.5 1.5 1.5 1.5 0.6 0.6 1.1 1.1 0.6 0.6 LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY TEMP. RANGE (C) 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 PACKAGE (Pb-free) 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead DFN 8 Lead DFN 8 Lead DFN 8 Lead DFN 8 Lead DFN 8 Lead DFN PKG. DWG. # M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 L8.3x3J L8.3x3J L8.3x3J L8.3x3J L8.3x3J L8.3x3J
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FN6937.0 October 22, 2010
ISL6185
Ordering Information (Continued)
PART NUMBER (Notes 1, 2, 3) ISL61852GCRZ ISL61852HCRZ ISL61852ICRZ ISL61852JCRZ ISL61852KCRZ ISL61852LCRZ ISL61853ACRZ ISL61853BCRZ ISL61853CCRZ ISL61853DCRZ ISL61853ECRZ ISL61853FCRZ ISL61853GCRZ ISL61853HCRZ ISL61853ICRZ ISL61853JCRZ ISL61853KCRZ ISL61853LCRZ ISL61853MCRZ ISL61853NCRZ ISL61853OCRZ ISL61853PCRZ ISL61851AIBZ ISL61851BIBZ ISL61851CIBZ ISL61851DIBZ ISL61851EIBZ ISL61851FIBZ ISL61851GIBZ ISL61851HIBZ ISL61851IIBZ ISL61851JIBZ ISL61851KIBZ ISL61851LIBZ ISL61852AIRZ ISL61852BIRZ ISL61852CIRZ ISL61852DIRZ ISL61852EIRZ ISL61852FIRZ PART MARKING 52GC 52HC 52IC 52JC 52KC 52LC 53AC 53BC 53CC 53DC 53EC 53FC 53GC 53HC 53IC 53JC 53KC 53LC 53MC 53NC 53OC 53PC 61851A IBZ 61851B IBZ 61851C IBZ 61851D IBZ 61851E IBZ 61851F IBZ 61851G IBZ 61851H IBZ 61851I IBZ 61851J IBZ 61851K IBZ 61851L IBZ 52AI 52BI 52CI 52DI 52EI 52FI EN/EN INPUT EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN VIN = 5V MAXIMUM CONTINUOUS LATCH/AUTO IOUT (A) RETRY 1.1 1.1 1.5 1.5 1.5 1.5 0.6 0.6 1.1 1.1 0.6 0.6 1.1 1.1 1.5 1.5 1.5 1.5 1.8 1.8 1.8 1.8 0.6 0.6 1.1 1.1 0.6 0.6 1.1 1.1 1.5 1.5 1.5 1.5 0.6 0.6 1.1 1.1 0.6 0.6 LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY TEMP. RANGE (C) 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 0 to +70 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 PACKAGE (Pb-free) 8 Lead DFN 8 Lead DFN 8 Lead DFN 8 Lead DFN 8 Lead DFN 8 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead SOIC 8 Lead DFN 8 Lead DFN 8 Lead DFN 8 Lead DFN 8 Lead DFN 8 Lead DFN PKG. DWG. # L8.3x3J L8.3x3J L8.3x3J L8.3x3J L8.3x3J L8.3x3J L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 M8.15 L8.3x3J L8.3x3J L8.3x3J L8.3x3J L8.3x3J L8.3x3J
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FN6937.0 October 22, 2010
ISL6185
Ordering Information (Continued)
PART NUMBER (Notes 1, 2, 3) ISL61852GIRZ ISL61852HIRZ ISL61852IIRZ ISL61852JIRZ ISL61852KIRZ ISL61852LIRZ ISL61853AIRZ ISL61853BIRZ ISL61853CIRZ ISL61853DIRZ ISL61853EIRZ ISL61853FIRZ ISL61853GIRZ ISL61853HIRZ ISL61853IIRZ ISL61853JIRZ ISL61853KIRZ ISL61853LIRZ ISL61853MIRZ ISL61853NIRZ ISL61853OIRZ ISL61853PIRZ ISL61851EVAL1Z ISL61852EVAL1Z ISL61853EVAL1Z NOTES: 1. Add "-T*" suffix for tape and reel. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL6185. For more information on MSL please see techbrief TB363. PART MARKING 52GI 52HI 52II 52JI 52KI 52LI 53AI 53BI 53CI 53DI 53EI 53FI 53GI 53HI 53II 53JI 53KI 53LI 53MI 53NI 53OI 53PI EN/EN INPUT EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN EN VIN = 5V MAXIMUM CONTINUOUS LATCH/AUTO IOUT (A) RETRY 1.1 1.1 1.5 1.5 1.5 1.5 0.6 0.6 1.1 1.1 0.6 0.6 1.1 1.1 1.5 1.5 1.5 1.5 1.8 1.8 1.8 1.8 LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY LATCH RETRY TEMP. RANGE (C) -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 -40 to +85 PACKAGE (Pb-free) 8 Lead DFN 8 Lead DFN 8 Lead DFN 8 Lead DFN 8 Lead DFN 8 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN 10 Lead DFN PKG. DWG. # L8.3x3J L8.3x3J L8.3x3J L8.3x3J L8.3x3J L8.3x3J L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3 L10.3x3
8 Lead SOIC Evaluation Platform 8 Lead DFN Evaluation Platform 10 Lead DFN Evaluation Platform
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FN6937.0 October 22, 2010
ISL6185
Pin Configurations
ISL6185 (8 LD SOIC/DFN) TOP VIEW
GND VIN EN1/EN1 EN2/EN2 1 2 3 4 (GND) EPAD DFN Only 8 7 6 5 FLT1 OUT1 OUT2 FLT2 GND VIN VIN EN1/EN1 EN2/EN2 1 2 3 4 5 (GND) EPAD
ISL6185 (10 LD DFN) TOP VIEW
10 FLT1 9 8 7 6 OUT1 NC OUT2 FLT2
Pin Descriptions
PIN NUMBER 8 Ld SOIC/DFN 1 2 10 Ld DFN 1 2, 3
SYMBOL GND VIN IC ground reference
DESCRIPTION
Chip bias, Controlled Voltage Input, Undervoltage Lock Out (UVLO). VIN provides chip bias voltage. At VIN < 1.7V chip functionality is disabled, FLT is active and floating and OUT is held low. Range 0V to 5.5V Enable/Disable inputs, Active high (EN) and active low (EN) options enable the power switch. These inputs have internal 1M pull off resistors. Range 0V to VIN Overcurrent Fault Indicator. Overcurrent fault indicator. FLT floats and is disabled until VIN >VUVLO. This output is pulled low after the current limit time-out period has expired. Fault is not signaled due to over-temperature shut down. Range 0V to VIN Controlled Supply Output. Upon an OC condition IOUT is current limited. Current limit response time is within 200s. This output will remain in current limit for a nominal 12ms before being turned off either for the latch or auto retry versions. Range 0V to VIN This pin is not electrically connected internally Thermal Dissipation Exposed PAD Range: Connect to GND
3, 4 5, 8
4, 5 6, 10
EN1, EN1/ EN2, EN2 FLT2 FLT1
6, 7
7, 9
OUT2, OUT1
PD (DFN only)
8 PD
NC EPAD
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FN6937.0 October 22, 2010
ISL6185
Absolute Maximum Ratings
Supply Voltage (VIN to GND, Note 7) . . . . . . . . . . . . . .6.5V EN, FAULT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VIN OUT . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to VIN 0.3V Output Current . . . . . . . . . . . . . . . . Short Circuit Protected ESD Rating Human Body Model (Per MIL-STD-883 Method 3015.7) 3kV Machine Model (Per MIL-STD-883 Method 3015.7). . . 300V Latch Up (Tested per JESD-78B; Class 2, Level A) . . . 100mA
Thermal Information
Thermal Resistance (Typical, Note 4) JA (C/W) JC (C/W) 8 Lead SOIC Package (Note 4) . . . 120 N/A 8 Lead 3x3 DFN Package (Notes 5, 6) 48 6 10 Lead 3x3 DFN Package (Notes 5, 6) 53 6 Maximum Junction Temperature . . . . . . . . . . . . . . +150C Maximum Storage Temperature Range . . . . -65C to +150C Pb-Free Reflow Profile. . . . . . . . . . . . . . . . . . see link below http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Operating Conditions
Commercial Temperature Range. . . . . . . . . . . 0C to +70C Industrial Temperature Range . . . . . . . . . . . -40C to +85C Supply Voltage Range (Typical) . . . . . . . . . . . . 2.3V to 5.5V
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty.
NOTES: 4. JA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details. 5. JA is measured in free air with the component mounted on a high effective thermal conductivity test board with "direct attach" features. See Tech Brief TB379. 6. For JC, the "case temp" location is the center of the exposed metal pad on the package underside. 7. All voltages are relative to GND, unless otherwise specified.
Electrical Specifications
VIN = 5V, TA = TJ, Unless Otherwise Specified. Boldface limits apply over the operating temperature range, 0C to +75C or -40C to +85C. TEST CONDITIONS MIN MAX (Note 8) TYP (Note 8) UNITS
SYMBOL POWER SWITCH rDS(ON)_50 rDS(ON)_33 rDS(ON)_25 VOUT_DIS ROUT_PU tR tF tF_fast
PARAMETER
ON-Resistance at 5.0V (Pulse Tested) ON-Resistance at 3.3V (Pulse Tested) On Resistance at 2.5V (Pulse Tested) Disabled Output Voltage Output Pull-Down Resistor VOUT Rise Time Slow VOUT Turn-off Fall Time Fast VOUT Turn-off Fall Time
VIN = 5V, IOUT = 0.1A, TA = TJ = +25C TA = TJ = +85C VIN = 3.3V, IOUT = 0.1A, TA = TJ = +25C TA = TJ = +85C VIN = 2.5V, IOUT = 0.1A, TA = TJ = +25C TA = TJ = +85C VIN = 5V, Switch Disabled, 50A Load VIN = 5V, Switch Disabled RL = 10, CL=10F, 10% to 90% RL = 10, CL=10F, 90% to 10% RL = 1, CL=10F, 80% to 20% ISL6185xA,B,E,F ISL6185xC,D,G,H ISL6185xI,J,K,L ISL61853M,N,O,P (10 Ld DFN) ISL6185xA,B,E,F ISL6185xC,D,G,H ISL61851I,J,K,L (SOIC) ISL61852, ISL61853 (DFN)
8 -
71
87 110
m m m m m m mV k s s s
90
105 130
114
127 150
50 9.6 100 200 23
70 12 -
CURRENT CONTROL IOUT_CONT_5 Maximum Continuous Current, VIN = 5V. IOUT_CONT_5 Guaranteed by Itrip minimum IOUT_CONT_5 specification. IOUT_CONT_5 IOUT_CONT_3 Maximum Continuous Current, VIN = 3.3V. IOUT_CONT_3 Guaranteed by Itrip minimum IOUT_CONT_3 specification. IOUT_CONT_3 0.6 1.1 1.5 1.8 0.6 0.9 1.3 1.5 A A A A A A A A
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FN6937.0 October 22, 2010
ISL6185
Electrical Specifications
VIN = 5V, TA = TJ, Unless Otherwise Specified. Boldface limits apply over the operating temperature range, 0C to +75C or -40C to +85C. (Continued) TEST CONDITIONS ISL6185xA,B,E,F ISL61851C,D,G,H (SOIC) ISL61852, ISL61853 C,D,G,H (DFN) ISL61853I,J,K,L (10 Ld DFN) ISL61853M,N,O,P (10 Ld DFN) Trip Current, VIN = 5V ISL6185xA,B,E,F ISL6185xC,D,G,H ISL61853I,J,K,L ISL61853M.N,O,P Trip Current, VIN = 3.3V ISL6185xA,B,E,F ISL6185xC,D,G,H ISL61853I,J,K,L ISL61853M.N,O,P Trip Current, VIN = 2.5V ISL6185xA,B,E,F ISL6185xC,D,G,H ISL61853I,J,K,L ISL61853M.N,O,P Current Limit, VIN = 5V ISL6185xA,B,E,F, VIN - VOUT = 1V ISL6185xC,D,G,H, VIN - VOUT = 1V ISL61853I,J,K,L, VIN - VOUT = 1V ISL61853M,N,O,P, VIN - VOUT = 1V Current Limit, VIN = 3.3V ISL6185xA,B,E,F, VIN - VOUT = 1V ISL6185xC,D,G,H, VIN - VOUT = 1V ISL61853I,J,K,L, VIN - VOUT = 1V ISL61853M,N,O,P, VIN - VOUT = 1V Current Limit, VIN = 2.5V ISL6185xA,B,E,F, VIN - VOUT = 1V ISL6185xC,D,G,H, VIN - VOUT = 1V ISL61853I,J,K,L, VIN - VOUT = 1V ISL61853M,N,O,P, VIN - VOUT = 1V Short Circuit Current, VIN = 5V ISL6185xA,B,E,F, VOUT = 0V ISL6185xC,D,G,H, VOUT = 0V ISL61853I,J,K,L, VOUT = 0V ISL61853M,N,O,P, VOUT = 0V Short Circuit Current, VIN = 3.3V ISL6185XA,B,E,F, VOUT = 0V ISL6185XC,D,G,H, VOUT = 0V ISL61853I,J,K,L, VOUT = 0V ISL61853M,N,O,P, VOUT = 0V Short Circuit Current, VIN = 2.5V ISL6185xA,B,E,F, VOUT = 0V ISL6185xC,D,G,H, VOUT = 0V ISL61853I,J,K,L, VOUT = 0V ISL61853M,N,O,P, VOUT = 0V MIN MAX (Note 8) TYP (Note 8) UNITS 0.70 1.15 1.55 1.85 0.65 0.95 1.35 1.55 0.50 0.98 1.30 1.52 0.45 0.90 1.25 1.48 0.47 0.90 1.15 1.3 0.60 1.00 1.15 1.20 0.35 0.65 0.70 0.90 0.6 0.9 1 1 1 1.02 1.45 1.82 1.99 0.86 1.25 1.60 1.89 0.65 1 1.2 1.6 0.65 1.14 1.55 1.83 0.63 1.10 1.50 1.78 0.61 1.05 1.37 1.63 0.80 1.27 1.61 1.70 0.48 0.80 1.06 1.24 0.61 1.06 1.30 1.39 1.52 1.95 2.25 2.15 1.20 1.60 1.85 2.25 0.78 1.28 1.72 2.20 0.75 1.26 1.68 2.05 0.74 1.17 1.58 1.90 1.00 1.55 1.85 2.5 0.60 0.95 1.25 1.50 A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
FN6937.0 October 22, 2010
SYMBOL
PARAMETER
IOUT_CONT_2 IOUT_CONT_2 IOUT_CONT_2 IOUT_CONT_2 ITRIP_5 ITRIP_5 ITRIP_5 ITRIP_5 ITRIP_3 ITRIP_3 ITRIP_3 ITRIP_3 ITRIP_2 ITRIP_2 ITRIP_2 ITRIP_2 ILIM_5 ILIM_5 ILIM_5 ILIM_5 ILIM_3 ILIM_3 ILIM_3 ILIM_3 ILIM_2 ILIM_2 ILIM_2 ILIM_2 Isc_5 Isc_5 Isc_5 Isc_5 Isc_3 Isc_3 Isc_3 Isc_3 Isc_2 Isc_2 Isc_2 Isc_2
IOUT_CONT_2 Maximum Continuous Current, VIN = 2.5V
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ISL6185
Electrical Specifications
VIN = 5V, TA = TJ, Unless Otherwise Specified. Boldface limits apply over the operating temperature range, 0C to +75C or -40C to +85C. (Continued) TEST CONDITIONS VIN/RL = 2ILIM, CL = 10F to within 10% of ILIM VIN/RL = 4ILIM, CL = 10F to within 10% of ILIM IOUT = ILIM MIN MAX (Note 8) TYP (Note 8) UNITS 9.2 0.80 200 30 12 1 15 1.35 s s ms s
SYMBOL tsettIlim tsettIlim_sev tCL tRTY Vfault_lo Ifault Venr_5 Hys_Venr_5 Venr_3 Hys_Venr_3 Venr_2 Hys_Venr_2 Ren_h Ren_l tON tOFF
PARAMETER OC to Limit Settling Time Severe OC to Limit Settling Time Current Limit Duration Automatic Retry Period
I/O PARAMETERS Fault Output Voltage Fault Leakage ENABLE Rising Threshold ENABLE Rising Threshold Hysteresis ENABLE Rising Threshold ENABLE Rising Threshold Hysteresis ENABLE Rising Threshold ENABLE Rising Threshold Hysteresis ENABLE Pull-Down Resistor ENABLE Pull-Up Resistor VIN = 5V VIN = 5V VIN = 3.3V VIN = 3.3V VIN = 2.5V VIN = 2.5V Enable asserted high options Enable asserted low options Fault IOUT = 10mA 1.5 80 1.0 58 0.95 30 0.6 0.6 5 1.8 140 1.3 80 1.1 70 1 1 0.1 0.25 0.4 2 175 1.6 120 1.3 110 1.55 1.55 V A V mV V mV V mV M M ms ms
Enable to Output Turn-on Time RL = 10, CL = 10F, Enable 50% to Output 90% Enable to Output Turn-off Time RL = 10, CL = 10F, Enable 50% to Output 10%
BIAS PARAMETERS IVDD IVDD VUVLO UVHYS IVR Temp_dis Temp_hys NOTE: 8. Parameters with MIN and/or MAX limits are 100% tested at +25C, unless otherwise specified. Temperature limits established by characterization and are not production tested. Enabled VIN Current Disabled VIN Current Rising POR Threshold POR Hysteresis Reverse Blocking Leakage Current Over-Temperature Disable Over-Temperature Hysteresis VIN = 0V, VOUT = 5V Switches Closed, OUTPUT = OPEN Switches Open, OUTPUT = OPEN VIN Rising to functional operation 1.7 200 150 20 50 2 2.1 360 75 5 2.3 580 2 A A V mV A C C
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FN6937.0 October 22, 2010
ISL6185
Introduction
The ISL6185 is a dual channel fully independent overcurrent (OC) fault protection IC for the +2.5V to +5V environment. Each ISL6185 incorporates in a single package two 85m P-channel MOSFET power switches for power control. Independent enabling inputs and fault reporting outputs compatible with 2.5V to 5V logic allows for external control and reporting. This device features integrated power switches with current monitoring, accurate current limiting, reverse bias protection and current limited timed delay to turn-off for system reliability. See Figures 11 through 26 for typical operational waveforms including both under and overcurrent situations. The ISL6185 offers current sense and limiting with VIN = 5V guaranteed continuous current product variants of 0.6A, 1.1A, 1.5A and 1.8A making these devices well suited for a myriad of USB and other low power (9W max) port power management applications and configurations. The ISL6185 also provides a thermally insensitive timed OC turn-off and fault notification, isolating and protecting the voltage bus in the event of a peripheral OC event or short circuit event independent of the adjoining switch's electrical or the ambient thermal condition. The ISL6185 undervoltage lockout feature prevents turn-on of the outputs unless the correct ENABLE state and VIN > VUVLO are present. During initial turn-on the ISL6185 prevents fault reporting by blanking the fault signal. During operation, once an OC condition is detected the output is current limited for tCL to allow transient OC conditions to pass. If still in current limit after the current limit period has elapsed, the output is then turned off and the fault is reported by pulling the corresponding FAULT output low. On the latch off options, after turn-off both the output and the FAULT signal are latched low until reset by the enable signal being de-asserted or a POR occurs at which time the FAULT signal will clear and the switch is ready to be turned back on. On the auto restart options the ISL6185 will attempt to periodically turn-on the output as long as the enable is asserted. When disabled the ISL6185 has a low quiescent supply current and output to input reverse current flow blocking capability. The ISL6185 family is provided with enable polarity options and an industry standard 8 lead SOIC pinout along with two versions in the 70% smaller 3x3 DFN. The 8 Ld DFN package offers the same performance as the 8 Ld SOIC whereas the 10 Ld DFN offers higher current capability in the smallest possible package because of lower package electrical and thermal resistance.
Functional Description
Power On Preset (POR)
The ISL6185 POR feature inhibits device functionality when VIN Reverse Polarity Protection
In any event where the power switch is disabled and VOUT > VIN there will be no output to input current flow nor will the output voltage appear on the input.
Soft-Start
Upon enable, the switch passes a constant current to the load. The voltage on the VOUT pin will ramp up according the equation: ILIM/COUT (V/s). Resistive or active load will slow the VOUT ramp up toward the top of its curve.
Fault Blanking On Start-Up
During initial turn-on, the ISL6185 prevents nuisance faults being reported to the system controller by blanking the fault signal until the internal FET is fully enhanced.
Current Trip and Limiting Levels
The ISL6185 provides integrated current sensing in the MOSFET that allows for rapid control of OC events. Once an OC condition is detected the ISL6185 goes into its current limiting (CL) control mode. The ISL6185 is variant specified to allow a continuous current (ICONT) operation of 0.6A, 1.1A, 1.5A or 1.8A. As the current increases past its continuous current rating it will reach a level that causes the device to enter its current limit mode, that is the current trip level. The current trip level is in all cases adequately above the ICONT rating as to not cause unintended false faults. The current limit is specified at VOUT = VIN - 1V to test a known representative condition and is featured at a nominal value slightly higher than the continuous current rating. The speed of this current limiting control is inversely related to the magnitude of the OC fault. Thus a hard overcurrent is more quickly pulled to its limiting value than a marginal OC condition.
Over-Temperature Shutdown
Although the ISL6185 has an over-temperature shutdown and lockout feature, because of the 12ms timed shutdown the thermal shutdown is likely only to be invoked in extremely high ambient temperatures. The over- temperature protection invokes and disables the switch turn-on operation once the die temperature is ~+140C, it will turn off an already on switch at ~+150C and releases the part to operation once the die temperature falls to ~+120C.
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FN6937.0 October 22, 2010
ISL6185
Turn-off Time Delay
During operation, once an OC condition is detected the output is current limited for ~12ms to allow transient OC conditions to pass. If still in current limit and after the current limit period has elapsed, the output is then turned off and the fault is reported by pulling the corresponding FAULT low. The internal 12ms timer starts upon current limiting and is independent of ambient or IC thermal conditions providing more consistent operation over the entire temp range. reset by the enable signal being de-asserted at which time the FAULT signal will clear and the IC is ready for enable to assert. On the auto restart options the ISL6185 will attempt to periodically turn-on the output at approximately 1s intervals as long as the enable is asserted. If the OC condition remains indefinitely so will the fault indication and the restart attempts until such time that the thermal protection feature is invoked increasing the restart period.
Active Output Pull-down
Another ISL6185 feature is the 10k active pull-down on the outputs to <60mV above GND when the device is disabled ensuring discharge of the load.
Latchoff Restart/Auto-Restart Start
After turn-off, with the latch off options both the output and the FAULT signal are latched low until
Typical Performance Curves
150 140 rDS(ON) @ 0.5A (m) 130 120 110 100 90 80 70 60 50 -40 -25 0 25 45 75 TEMPERATURE (C) 85 115 VIN = 3.3V VIN = 5V VIN = 2.5V NORMALIZED rDS(ON) 1.2 1.1 1.0 0.9 0.8 0.7 -40 -25 0 25 45 75 TEMPERATURE (C) 85 115 1.3
FIGURE 1. SWITCH ON-RESISTANCE AT 0.5A
FIGURE 2. NORMALIZED SWITCH RESISTANCE
1.2 OUTPUT CURRENT (A) 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4
5V ITRIP OUTPUT CURRENT (A)
1.6 1.5 1.4 1.3 1.2 1.1 0.9 0.8 0.7 0.6 -40 -25 0 25 45 75 TEMPERATURE (C) 3.3V ISC 85 115 5V ITRIP 3.3V ITRIP 5V ILIM 5V ISC
3.3V ITRIP 5V ISC 5V ILIM 3.3V ILIM 3.3V ISC -40 -25 0 25 45 75 TEMPERATURE (C) 85 115
1.0 3.3V ILIM
FIGURE 3. 0.6A CONTINUOUS CURRENT CHARACTERISTICS
FIGURE 4. 1.1A CONTINUOUS CURRENT CHARACTERISTICS
10
FN6937.0 October 22, 2010
ISL6185
Typical Performance Curves
2.0 OUTPUT CURRENT (A) 1.8 5V ITRIP 1.6 1.4 1.2 1.0 0.8 3.3V ITRIP 5V ISC
(Continued)
2.2 OUTPUT CURRENT (A) 2.0 1.8 1.6 1.4 1.2 1.0 3.3V ILIM 5V ILIM 5V ITRIP 3.3V ITRIP 5V ISC
3.3V ILIM
5V ILIM 3.3V ISC
3.3V ISC
-40
-25
0
25
45
75
85
115
-40
-25
TEMPERATURE (C)
0 25 45 75 TEMPERATURE (C)
85
115
FIGURE 5. 1.5A CONTINUOUS CURRENT CHARACTERISTICS
FIGURE 6. 1.8A CONTINUOUS CURRENT CHARACTERISTICS
0.75 0.70 0.65 0.60 0.55 0.50
0.6A CONTINUOUS IOUT VERSION
ILIMIT 3 SIGMA
1.25 1.20 1.15 1.10 1.05 1.00
1.1A CONTINUOUS IOUT VERSION +3 SIGMA
ILIMIT 3 SIGMA
+3 SIGMA
TYPICAL
TYPICAL
-3 SIGMA
-3 SIGMA
-40
-25
0 25 45 75 TEMPERATURE (C)
85
115
-40
-25
0 25 45 75 TEMPERATURE (C)
85
115
FIGURE 7. LIMITING CURRENT 3 SIGMA, VIN = 5V
FIGURE 8. LIMITING CURRENT 3 SIGMA, VIN = 5V
1.65 1.60
ILIMIT 3 SIGMA
1.5A CONTINUOUS IOUT VERSION
ILIMIT 3 SIGMA
2.00 +3 SIGMA TYPICAL -3 SIGMA 1.95 1.90 1.85 1.80 1.75 1.70 1.65
1.8A CONTINUOUS IOUT VERSION +3 SIGMA
1.55 1.50 1.45 1.40 1.35
TYPICAL -3 SIGMA
-40
-25
0
25
45
75
85
115
1.60
-40
-25
TEMPERATURE (C)
0 25 45 75 TEMPERATURE (C)
85
115
FIGURE 9. LIMITING CURRENT 3 SIGMA, VIN = 5V
FIGURE 10. LIMITING CURRENT 3 SIGMA, VIN=5V
11
FN6937.0 October 22, 2010
ISL6185
Typical Performance Curves
ENABLE
(Continued)
ENABLE
CL=1F
CL=10F
VOUT 1V/DIV VOUT 1V/DIV CL=100F CL=1F
CL=10F CL=100F
FIGURE 11. VOUT TURN-ON/RISE TIME vs CLOAD. VIN = 5V, RL = 10
FIGURE 12. VOUT TURN-OFF/FALL TIME vs CLOAD. VIN = 5V, RL = 10
0.6A ICONT VARIANT FLT
VOUT 1V/DIV
CL=10F CL=100F
VOUT
IIN
CL=1F
FIGURE 13. LATCH-OFF vs CLOAD
FIGURE 14. ILIM WAVEFORM
0.6A ICONT VARIANT 6A/ms 0.6A/ms 0.08A/ms
0.6A ICONT VARIANT 2A OC 27s
1A OC 57s
0.5A OC 200s 0.53A LOAD CURRENT 0.72A CURRENT LIMIT
0.56A LOAD CURRENT IIN 2A/DIV
0.66A CURRENT LIMIT
FIGURE 15. OC RAMP RATE ILIM WAVEFORMS
FIGURE 16. PEAK CURRENT SETTLING TIMES
12
FN6937.0 October 22, 2010
ISL6185
Typical Performance Curves
ENABLE 0.6A ICONT VARIANT FAULT
(Continued)
ENABLE 0.6A ICONT VARIANT VOUT FAULT
IIN LIMITED TO 0.64A VOUT
IIN
FIGURE 17. TURN-ON INTO A SHORT
FIGURE 18. TURN-ON INTO MOMENTARY OC
1.1A ICONT VARIANT FLT VOUT VOUT
FLT IIN IIN
FIGURE 19. ISL6185 RETRY FUNCTION
FIGURE 20. ILIM WAVEFORM
ENABLE ENABLE FAULT FAULT
VOUT
VOUT IIN 1.8A ICONT VARIANT
Iin 1.8A ICONT VARIANT
FIGURE 21. VIN = 2.5V TURN-ON INTO 2.2
FIGURE 22. VIN = 5V TURN-ON INTO 2.7
13
FN6937.0 October 22, 2010
ISL6185
Typical Performance Curves
(Continued)
IIN CH1 and CH2 ON (3.6A TOTAL IIN) FAULT
ENABLE VOUT IIN LIMITED TO 1.7A CH1 ON (1.8A)
ENABLE FAULT 1.8A ICONT VARIANT VOUT 1.8A ICONT VARIANT
FIGURE 23. TURN-ON INTO A SHORT
FIGURE 24. TURN-ON 2ND OUTPUT TO FULL LOAD
1.1A ICONT VARIANT FLT VOUT VOUT
FLT IIN IIN
FIGURE 25. ISL6185 RETRY FUNCTION
FIGURE 26. ILIM WAVEFORM
FIGURE 26. PROPAGATION DELAY AND OUTPUT TRANSITION TIMES
Test Circuits
+ 10k V 10k
FLT 5V VIN EN OUT ISL6185 10F 10 OUTPUT
FLT 5V VIN EN OUT ISL6185 10F 10
OUTPUT RL sized for desired OC level RL
rDS(ON) = V/(VOUT/10)
FIGURE 27A. rDS(ON)
FIGURE 27B. CURRENT LIMITING FIGURE 27. DC TEST CIRCUIT
14
FN6937.0 October 22, 2010
ISL6185
Test Circuits (Continued)
VIN EN 10k 0.5VIN 0.5VIN 0V tON 10F 10 OUTPUT OUTPUT 90% 10% tOFF VIN GND
FLT 5V 0-VIN VIN EN OUT ISL6185
OUTPUT tR
90% 10%
90% 10% tF
VIN -GND
FIGURE 28A. TRANSIENT TEST CIRCUIT
FIGURE 29. TRANSIENT WAVEFORM MEASUREMENT POINTS
ISL6185xEVAL1Z Schematic and Photo
R1 10k R3 AGND A V+ 2.2F C1 AGND V+ EN1 EN2 A R2 10k NOTE: EXPOSED PAD only on DFN packages FLT1 OUT1 OUT2 FLT2 10 C2 10F R4 10 C3 10F
FLT1 OUT1
U1 ISL6185
A OUT2 A FLT2
A
FIGURE 30A. ISL6185xEVAL SCHEMATIC
FIGURE 30B. ISL61851EVAL1Z BOARD PHOTO
FIGURE 30. ISL6185xEVAL1Z SCHEMATIC and ISL61851EVAL1Z PHOTOGRAPH
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FN6937.0 October 22, 2010
ISL6185
Application Information
Using the ISL6185xEVAL1Z Platform General and Biasing Information
There are three (3) evaluation platforms for the ISL6185 family. There is one (1) for each package style, each with a different continuous output current level and a mix of enable polarity and output retry or latch options. See the bottom of Table 1 for standard available evaluation board options. Figure 30A, illustrates the common schematic for all of the evaluation boards, consult the individual package pinouts for those differences. The evaluation platform is biased and monitored through numerous labeled test points. See Table 1 for test point assignments and descriptions.
TABLE 1. ISL61851EVAL1Z TEST POINT ASSIGNMENTS TP NAME GND V+ EN1 EN2 FLT2 OUT2 OUT1 FLT1 DESCRIPTION Eval Board and IC Gnd Eval Board and IC Bias Enable Switch 1 Enable Switch 2 Switch 2 Fault Switch Out 2 Switch Out 1 Switch 1 Fault
Application Considerations
The application considerations for the ISL6185 family are widely accepted best industry practices. Good decoupling practices on the VIN pin must be followed with placement close to the IC with at least 2.2F being recommended. Work to reduce the input and output inductance to the ISL6185 with good PCB layout practices. When designing with the 1.5A and 1.8A versions in an implementation where the output may be unloaded (open) while the ISL6185 is turned on, a minimum of 4.7F of capacitive output load is recommended to prevent high dv/dt from unnecessarily activating the surge/ESD control circuit. The ISL6185 provides several continuous current rated devices specified at VIN = 5V, these are 0.6A, 1.1A, 1.5A and 1.8A options capable over the entire temperature extreme. At VIN = 3.3V the current capability is degraded and the ISL6185 is specified at 0.6A, 1.1A, 1.3A and 1.5A respectively. At VIN = 2.5V there are no min specifications but a typical value is provided for +25C operation in the specification table. This degraded capability is due to the higher rDS(ON) of the FET switch at the lower bias voltage. The enhanced thermal characteristics and increased number of bond wires allows the 10 Ld DFN to have a higher current capability than either the 8 Ld SOIC or DFN.
TABLE 2. ISL6185XEVAL1Z BOARD COMPONENT LISTING COMPONENT DESIGNATOR U1 R3 - R4 R1 - R2 C1 C2 - C3 COMPONENT FUNCTION ISL6185 Output Load Resistors FLT Output pull up resistor Decoupling Capacitor Load Capacitor COMPONENT DESCRIPTION Intersil, ISL6185 10, 5%, 3W 10k, 0805 2.2F, 0805 10F 16V Electrolytic, Radial Lead
Upon proper bias and of the evaluation platform and correct enabling of the IC the ISL6185 will have a nominal VIN/10 load current passing through each enabled switch which is below the continuous current rating. See Figures 11 and 12 for typical ISL6185 turn-on and off waveforms. External current loading in excess of the trip current level for the particular part being evaluated will result in the ISL6185 entering the current limiting mode. Figure 14 illustrates the current limiting mode for the ISL6185 product variants with 0.6A of continuous load current rating. The scope shot shows current limiting for ~12ms before it is turned off and the fault signal is asserted.
16
FN6937.0 October 22, 2010
ISL6185
Revision History
The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make sure you have the latest Rev. DATE 10/22/10 REVISION FN6937.0 Initial release. CHANGE
Products
Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The Company's products address some of the industry's fastest growing markets, such as, flat panel displays, cell phones, handheld products, and notebooks. Intersil's product families address power management and analog signal processing functions. Go to www.intersil.com/products for a complete list of Intersil product families. *For a complete listing of Applications, Related Documentation and Related Parts, please see the respective device information page on intersil.com: ISL6185 To report errors or suggestions for this datasheet, please go to www.intersil.com/askourstaff FITs are available from our website at http://rel.intersil.com/reports/search.php
17
FN6937.0 October 22, 2010
ISL6185
Package Outline Drawing
L8.3x3J
8 LEAD DUAL FLAT NO-LEAD PLASTIC PACKAGE Rev 0 9/09
2X 1.950 3.00 (4X) 0.15 A B 6X 0.65
5
8
3.00
1.64 +0.10/ - 0.15
6 PIN 1 INDEX AREA 8X 0.400 0.10
PIN #1 INDEX AREA
6
4
TOP VIEW
1
8X 0.30 0.10 M C A B 2.38 +0.10/ - 0.15 4
BOTTOM VIEW
SEE DETAIL "X" ( 2.38 ) ( 1.95)
0.10 C
Max 1.00
C
0.08 C
( 8X 0.60) (1.64) ( 2.80 )
SIDE VIEW
PIN 1 (6x 0.65) ( 8 X 0.30)
C
0 . 2 REF
5
0 . 00 MIN. 0 . 05 MAX.
TYPICAL RECOMMENDED LAND PATTERN
DETAIL "X"
NOTES: 1. Dimensions are in millimeters. Dimensions in ( ) for Reference Only.
2. Dimensioning and tolerancing conform to AMSE Y14.5m-1994. 3. 4. Unless otherwise specified, tolerance : Decimal 0.05 Dimension applies to the metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip.
5. Tiebar shown (if present) is a non-functional feature. 6. The configuration of the pin #1 identifier is optional, but must be located within the zone indicated. The pin #1 identifier may be either a mold or mark feature.
18
FN6937.0 October 22, 2010
ISL6185
Package Outline Drawing
L10.3x3
10 LEAD DUAL FLAT PACKAGE (DFN) Rev 6, 09/09
3.00 A B 1 6 PIN 1 INDEX AREA 2 2.00 8x 0.50 3.00 6 PIN #1 INDEX AREA
10 x 0.23
4
(4X)
0.10
1.60
TOP VIEW
10x 0.35 4 (4X) 0.10 M C A B
BOTTOM VIEW
0.415 0.23
PACKAGE OUTLINE (10x 0.23) 1.00 MAX
(10 x 0.55)
0.35
0.200
SEE DETAIL "X" 0.10 C C BASE PLANE 0.20 SIDE VIEW SEATING PLANE 0.08 C
(8x 0.50) C 1.60 0.05 TYPICAL RECOMMENDED LAND PATTERN DETAIL "X" NOTES: 1. Dimensions are in millimeters. Dimensions in ( ) for Reference Only. Dimensioning and tolerancing conform to AMSE Y14.5m-1994. Unless otherwise specified, tolerance : Decimal 0.05 Lead width applies to the metallized terminal and is measured between 0.18mm and 0.30mm from the terminal tip. 5. 6. Tiebar shown (if present) is a non-functional feature. The configuration of the pin #1 identifier is optional, but must be located within the zone indicated. The pin #1 indentifier may be either a mold or mark feature. 0.20 REF 5
2.00
2. 3. 4.
19
FN6937.0 October 22, 2010
ISL6185 Small Outline Plastic Packages (SOIC)
N INDEX AREA E -B1 2 3 SEATING PLANE -AD -CA h x 45 H 0.25(0.010) M BM
M8.15 (JEDEC MS-012-AA ISSUE C)
8 LEAD NARROW BODY SMALL OUTLINE PLASTIC PACKAGE INCHES SYMBOL A A1
L
MILLIMETERS MIN 1.35 0.10 0.33 0.19 4.80 3.80 MAX 1.75 0.25 0.51 0.25 5.00 4.00 NOTES 9 3 4 5 6 7 8 Rev. 1 6/05
MIN 0.0532 0.0040 0.013 0.0075 0.1890 0.1497
MAX 0.0688 0.0098 0.020 0.0098 0.1968 0.1574
B C D E
A1 0.10(0.004) C
e H h L N
0.050 BSC 0.2284 0.0099 0.016 8 0 8 0.2440 0.0196 0.050
1.27 BSC 5.80 0.25 0.40 8 0 6.20 0.50 1.27
e
B 0.25(0.010) M C AM BS
NOTES: 1. Symbols are defined in the "MO Series Symbol List" in Section 2.2 of Publication Number 95. 2. Dimensioning and tolerancing per ANSI Y14.5M-1982. 3. Dimension "D" does not include mold flash, protrusions or gate burrs. Mold flash, protrusion and gate burrs shall not exceed 0.15mm (0.006 inch) per side. 4. Dimension "E" does not include interlead flash or protrusions. Interlead flash and protrusions shall not exceed 0.25mm (0.010 inch) per side. 5. The chamfer on the body is optional. If it is not present, a visual index feature must be located within the crosshatched area. 6. "L" is the length of terminal for soldering to a substrate. 7. "N" is the number of terminal positions. 8. Terminal numbers are shown for reference only. 9. The lead width "B", as measured 0.36mm (0.014 inch) or greater above the seating plane, shall not exceed a maximum value of 0.61mm (0.024 inch). 10. Controlling dimension: MILLIMETER. Converted inch dimensions are not necessarily exact.
For additional products, see www.intersil.com/product_tree Intersil products are manufactured, assembled and tested utilizing ISO9000 quality systems as noted in the quality certifications found at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com 20
FN6937.0 October 22, 2010

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