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MIC2568
Micrel
MIC2568
Dual-Slot PC Card/CardBus Power Controller Preliminary
General Description
The MIC2568 dual-slot PC Card / CardBus power controller is a VCC and VPP power switch matrix that supports 3.3V and 5V PC Card (PCMCIA) slot power supply pins. The MIC2568 can switch PC Card slot VCC voltages between 0V (ground), 3.3V and 5.0V and VPP voltages between 0V (ground), 3.3V, 5V, or high impedance at output currents of up to 1A for VCC and 250mA for VPP. The MIC2568 features well-controlled voltage rise and fall times. Each MIC2568 output voltage is switched by two digital inputs, typically controlled from a separate PC Card logic controller. The MIC2568 is designed for efficient operation. In standby (sleep) mode the device draws very little quiescent current, typically only 0.3A. The power controller includes thermal shutdown and protects itself and its PC Card ports with current limiting. Full cross-conduction lockout protects the system power supplies. The MIC2568 is available in 28-pin SSOP and TSSOP packages.
Features
* * * * * * * * * * * * * * * * * * * * * * Complete single-chip dual-slot power switch No external components required Output current limit and thermal shutdown Ultra-low power consumption Compatible with standard PC Card logic controllers Break-before-make switching (no transients) Digital VCC and VPP voltage selection > 1A VCC output current per slot > 200mA VPP output current per slot 28-pin SSO and TSSO package Pb-free 28-pin SSO package UL recognized, file #179633 Dual-slot PC Card power supply voltage switch CardBus slot power supply control Data collection systems Machine control data input systems Wireless communications Bar code data collection systems Instrumentation configuration/datalogging Portable and desktop computer docking stations Power supply management Power analog switching
Applications
Typical Application
Independent supply inputs can be used with two system power supplies. (Single system supply shown.) Address and data lines between logic controller and PCMCIA cards not shown.
A V CC3 IN A V CC5 IN (OPTIONAL) A EN1 A EN0 A V CC5 EN Dual-Slot PC Card Logic Controller A V CC3 EN B EN1 B EN0 B VCC5 EN B VCC3 EN (OPTIONAL) B VCC3 IN B VCC5 IN A V PP OUT A V CC OUT MIC2568 Power Controller System Power Supply 3.3V (OPTIONAL) 5V Slot A
VPP1 VPP2 VCC VCC
PC Card A
GND
Slot B
B VPP OUT B VCC OUT
VPP1 VPP2 VCC VCC
PC Card B
Motherboard
Dual-Slot PC Card Power Control
UL Recognized Component Micrel, Inc. * 1849 Fortune Drive * San Jose, CA 95131 * USA * tel + 1 (408) 944-0800 * fax + 1 (408) 944-0970 * http://www.micrel.com
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MIC2568
MIC2568
Micrel
Ordering Information
Part Number MIC2568-0BSM MIC2568-1BSM MIC2568-0YSM MIC2568-1YSM MIC2568-0BTS MIC2568-1BTS Operating Temperature Range -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C -40C to +85C Package 28-pin SSOP 28-pin SSOP 28-pin SSOP 28-pin SSOP 28-pin TSSOP 28-pin TSSOP X X Pb-Free
Pin Configuration
A V CC5 IN A V CC OUT A V CC5 IN GND A V CC5 EN A V CC3 EN A EN0 A EN1 NC B VPP OUT NC B VCC OUT B VCC3 IN B VCC OUT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 * * 28 27 26 25 24 23 * 22 * 21 20 19 18 17 16 15 A V CC OUT A V CC3 IN A V CC OUT NC A V PP OUT NC B EN1 B EN0 B VCC3 EN B VCC5 EN GND B VCC5 IN B VCC OUT B VCC5 IN A V CC5 IN A V CC OUT A V CC5 IN GND A V CC5 EN A V CC3 EN A V PP_VCC A V PP_PGM NC B VPP OUT NC B VCC OUT B VCC3 IN B VCC OUT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 * * 28 27 26 25 24 23 * 22 * 21 20 19 18 17 16 15 A V CC OUT A V CC3 IN A V CC OUT NC A V PP OUT NC B VPP_PGM B VPP_VCC B VCC3 EN B VCC5 EN GND B VCC5 IN B VCC OUT B VCC5 IN
MIC2568-0
Example: "A VCC5IN" pins 1 and 3 must be connected.
MIC2568-1
* Denotes pinout differences. Duplicate pins must be connected together for proper operation.
Pin Description
Pin Number MIC2568-0 1, 3 / 15, 17 Pin Number MIC2568-1 1, 3 / 15, 17 Pin Name A / B VCC5 IN A / B VCC OUT Pin Function 5V Nominal Supply Input: Optional supply, switchable to VCC and VPP outputs. VCC Output: 0V (ground), 3.3V, 5V, or high-impedance output. Pins 2, 26, and 28 must be externally connected. Pins 12, 14, and 16 must be externally connected. Ground. VCC 5V Enable (Input). VCC 3.3V Enable (Input). Enable 0: Micrel standard logic-control signal. MIC2568-0 only. VPP_VCC Control: Cirrus Logic logic-controller compatible control signal. MIC2568-1 only. Enable 1: Micrel standard logic-control signal. MIC2568-0 only. Program: Cirrus Logic-compatible control signal. MIC2568-1 only. VPP Output: 0V (ground), 3.3V, 5V, or high-impedance output. Not internally connected. 3.3V Nominal Supply Input: Mandatory supply, switchable to VCC and VPP outputs. Also powers MIC2568 internal circuitry.
2,26,28/12,14,16 2,26,28/12,14,16
4, 18 5 / 19 6 / 20 7 / 21
4, 18 5 / 19 6 / 20
GND A / B VCC5 EN A / B VCC3 EN A / B EN0 A / B VPP_VCC A / B EN1
7 / 21 8 / 22 8 / 22 24 / 10 9, 11, 23, 25 27 / 13 24 / 10 9, 11, 23, 25 27 / 13
A / B VPP_PGM A / B VPP OUT NC A / B VCC3 IN
MIC2568
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MIC2568
Micrel
Absolute Maximum Ratings (Note 1)
VCC5 IN [5V] Supply Voltage (VCC5 IN) .......................... +6V VCC3 IN [3.3V] Supply Voltage (VCC3 IN) ....................... +6V Logic Input Voltages (VCCx EN, VENx) ............ -0.3V to +6V Storage Temperature (TS) ....................... -65C to +150C Lead Temperature (5 sec.) ........................................ 260C ESD Rating, Note 3
Operating Ratings (Note 2)
VCC5 IN [5V] Supply Voltage (VCC5 IN), Note 5 ............................................................ +4.5V to +5.5V VCC3 IN [3.3V] Supply Voltage (VCC3 IN), Note 6 ............................................................ +3.0V to +5.5V Ambient Temperature Range (TA) ............. -40C to +85C Junction Temperature (TJ) ....................... Internally Limited Thermal Resistance SSOP (JA) .......................................................... 84C/W TSSOP (JA) ..................................................... 100C/W
Electrical Characteristics (Note 4)
VCC3 IN = 3.3V, VCC5 IN = 5.0V; specified over operating temperature range of -40C to +85C. Symbol Digital Inputs VIH VIL IIN VPP Output IPP OUT Hi-Z IPPSC RO High Impedance Output Leakage Current Short Circuit Current Limit Switch Resistance Shutdown mode 0 VPP OUT = 0V VPP OUT = 0V VPP OUT = 5V selected, IPP OUT = -100mA (sourcing) VPP OUT = 3.3V selected, IPP OUT = -100mA (sourcing) VPP OUT = 0V [ground] selected, IPP OUT = 50A (sinking) VPP Switching Time (See Figure 1) t1 t2 t3 t4 t5 t6 t7 t8 VCC Output ICCSC RO Short Circuit Current Limit Switch Resistance VCC OUT = 0V, normal mode, VCC3 or VCC5 switches VCC OUT = 3.3V selected, ICC OUT = -1A (sourcing) VCC OUT = 5V selected, ICC OUT = -1A (sourcing) VCC OUT = 0V [ground] selected, ICC OUT = 0.1mA (sinking) 1.0 1.5 120 90 1800 180 135 3900 A m m Output Turnoff Delay Time, Notes 7, 8 Output Turnoff Fall Time, Note 7 Output Rise Time, Note 7 Output Turn-On Delay, Note 7 VPP OUT = Hi-Z to 10% of 3.3V VPP OUT = Hi-Z to 10% of 5V VPP OUT = 10% to 90% of 3.3V VPP OUT = 10% to 90% of 5V VPP OUT = 90% to 10% of 3.3V VPP OUT = 90% to 10% of 5V VPP OUT = 3.3V to Hi-Z VPP OUT = 5V to Hi-Z 100 100 5 10 200 300 50 50 400 400 50 50 800 1000 1000 1000 1000 1000 s s s s ns ns ns ns 0.12 1 0.3 1.4 1.5 1300 4 4 3900 10 A A Logic-1 Input Voltage Logic-0 Input Voltage Input Current VCC3 IN = 3.0V to 5.5V VCC3 IN = 3.0V to 5.5V 0V VIN 5.5V 0.7VCC3 IN -0.3 5.5 0.3VCC3 IN 2 V V A Parameter Conditions Min Typ Max Units
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MIC2568
Symbol Parameter Conditions Min Typ Max
Micrel
Units s s s s s s ms ms A A A A C
VCC Switching Time (See Figure 2) t9 t10 t11 t12 t13 t14 t15 t16 Power Supply ICC5 ICC3 VCC5 IN Supply Current (5V) Note 5 VCC3 IN Supply Current (3.3V) Note 6 VCC OUT = 5V or 3.3V, ICC OUT = 0 VCC OUT = 0V (sleep mode) VCC OUT = 5V or 3.3V, ICC OUT = 0 VCC OUT = 0V (sleep mode) 8 0.2 40 0.1 50 10 100 10 Output Turnoff Delay, Notes 8, 9 Output Fall Time, Note 9 Output Turn-On Delay Time, Note 9 Output Rise Time, Note 9 VCC OUT = 0V to 10% of 3.3V VCC OUT = 0V to 10% of 5.0V VCC OUT = 10% to 90% of 3.3V VCC OUT = 10% to 90% of 5V VCC OUT = 90% to 10% of 3.3V VCC OUT = 90% to 10% of 5.0V VCC OUT = 3.3V VCC OUT = 5V 200 200 100 100 300 750 700 1500 300 600 0.65 0.7 1500 3000 2500 6000 1000 2000 2 2
Thermal Shutdown TSD
Note 1. Note 2. Note 3. Note 4. Note 5. Note 6. Note 7. Note 8. Note 9.
Thermal Shutdown Temperature
Exceeding the absolute maximum rating may damage the device. The device is not guaranteed to function outside its operating rating. Devices are ESD sensitive. Handling precautions recommended. Specification for packaged product only. VCC5 IN is not required for operation. VCC3 IN powers all internal logic, bias, and drive circuitry, and is required for operation. RL = 1k connected to ground.
140
Measurement is from the Hi-Z- or 0V-state command to the beginning of the slope. Measurement does not apply when device is in current limit or thermal shutdown. RL = 10 connected to ground.
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Micrel
Output Timing Diagrams
A VPP Enable 0 VPP to 3.3V B VPP OFF C VPP to 5V D VPP OFF
t5 VPP OUT t1 5V 3.3V t3 t7
t2 t4
t6 t8
0
Figure 1. VPP Timing Diagram VPP EN is shown generically. RL = 100. Load capacitance is negligible. Refer to "MIC2568-0 Logic Table" for specific control logic input. At time A) VPP = 3.3V, B) VPP is disabled, C) VPP is programmed to 5V, D) VPP is disabled.
A VCC Enable 0
B
C
D
VCC to 3.3V t9 t11
VCC OFF t15 t13
VCC to 5V t10 t12
VCC OFF t16 t14
5V VCC 3.3V OUT
0
FLAG 0
Figure 2. VCC Timing Diagram VCC EN is shown generically. RL = 10. Refer to "MIC2568-0 Logic Table" for specific control logic input. At time A) VCC is programmed to 3.3V, B) VCC is disabled, C) VCC is programmed to 5V, D) VCC is disabled.
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MIC2568
MIC2568
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MIC2568-0 Logic Table
VCC5 EN 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 VCC3 EN 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 EN1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 EN0 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 VCC OUT 0V* 0V* 0V* 0V* 3.3V 3.3V 3.3V 3.3V 5V 5V 5V 5V 3.3V 3.3V 3.3V 3.3V VPP OUT Hi-Z Hi-Z Hi-Z 0V* Hi-Z 3.3V Hi-Z 0V* Hi-Z 5V Hi-Z 0V* Hi-Z 3.3V 5V 0V*
MIC2568-1 Logic Table
MIC2568-1 control logic is compatible with the Cirrus Logic CL-PD6710 and CL-PD672x-series logic controllers.
VCC5 EN 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 VCC3 EN 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 VPP_PGM 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 VPP_VCC 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 VCC OUT 0V* 0V* 0V* 0V* 5V 5V 5V 5V 3.3V 3.3V 3.3V 3.3V 0V* 0V* 0V* 0V* VPP OUT 0V* Hi-Z Hi-Z Hi-Z 0V* 5V Hi-Z Hi-Z 0V* 3.3V Hi-Z Hi-Z 0V* Hi-Z Hi-Z Hi-Z
* clamped to ground
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MIC2568
Micrel
Functional Diagram
A V CC3 IN 3.3V A V CC5 IN 5V
Gate-Drive Charge Pump
A EN1 A V PP OUT A EN0 Control Logic A V CC5 EN A V CC OUT A V CC3 EN
Current Limit Thermal Shutdown
Thermal Shutdown Current Limit
B V CC3 EN B V CC OUT B V CC5 EN Control Logic B V PP OUT B EN1
B EN0
Gate-Drive Charge Pump MIC2568-0 GND B V CC3 IN 3.3V B V CC5 IN 5V
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MIC2568
MIC2568
Micrel
protection, output currents are internally limited. For full system protection, long-term output short circuits (millisecond or longer) invoke overtemperature shutdown, protecting the MIC2568, system power supplies, card socket pins, and PC Card. Bypass Capacitors Both VCC3 IN and VCC5 IN pins should be bypassed with 1F low-ESR surface-mount ceramic capacitors mounted near the MIC2568 chip. Both VCC OUT and VPP OUT pins may use 0.01F to 0.1F capacitors for noise reduction and to reduce the chance of (electrostatic discharge) ESD damage. PC Card Slot Implementation The MIC2568 is designed for PC Card applications, including the CardBus option, that do not require a 12V supply. When a memory card is initially inserted, it must receive a VCC voltage (either 3.3V 0.3V or 5.0V 5%). The initial voltage is determined by a combination of mechanical socket keys and voltage-sense pins. Each card sends handshaking data to the logic controller which determines whether that card requires a VPP voltage and whether the card is designed for dual VCC voltages. If the card is compatible with, and requests, a different VCC level, the controller disables VCC, waits at least 100ms, and then enables the new VCC voltage. If no card is inserted, or the system is in sleep mode, the logic controller outputs a (VCC3 EN, VCC5 EN) = (0, 0) to the MIC2568, which shuts down VCC. This also places the switch into its high-impedance output sleep mode. Basic VPP and VCC Switch Application Refer to Figure 3. A single system power supply feeds both slot-A and slot-B supply inputs. Although the PC Card specification defines two VPP outputs (VPP 1 and VPP 2) per card, they are usually connected together.
Applications Information
PC Card power control for two sockets is easily accomplished using the Micrel MIC2568 PC Card/CardBus Slot Power Controller IC. Output Voltage Selection Four control bits per socket determine VCC and VPP output voltages and standby- or operate-mode conditions. Input logic threshold voltages are compatible with common PC Card logic controllers using either 3.3V or 5V supplies. The VCC outputs can be individually switched between 0V (ground) or 3.3V and 5V at the maximum allowable PC Card current. The VPP outputs can be individually switched between 0V (ground), 3.3V or 5V (VCC3 or VCC5 voltages), or high impedance. When VCC = 0V (ground) is selected, the MIC2568 goes into sleep mode and draws only nanoamperes of leakage current. Switching speeds are controlled to prevent damage to sensitive loads and meet all PC Card Specification timing requirements. VCC switches are turned on and off slowly. If commanded to switch directly from one VCC to the other (without first turning off and waiting 100ms), enhancement of the second switch begins only after the first is off (break-beforemake protection). Supply Input The MIC2568 itself is powered from the VCC3 IN pin (3.3Vnominal supply input). Bias its internal MOSFETs is generated by a charge pump quadrupler. Refer to "5V-Only VCC Application" and Figure 4 for information on using the MIC2568 without a 3.3V supply. Output Current and Protection The MIC2568 meets or exceeds all PCMCIA current specifications. Its switches are capable of passing the maximum current needed by any PC Card. For system and card
System Power Supply (OPTIONAL) 5V 3.3V
Address and data lines between logic controller and PCMCIA cards not shown.
ABV CC3
Slot A VPP1
IN
ABV CC5
IN
VPP2 VCC VCC
PC Card A
A EN1 A EN0 A V CC5 EN Dual-Slot PC Card Logic Controller A V CC3 EN B EN1 B EN0 B V CC5 EN B V CC3 EN GND
A V PP OUT A V CC OUT MIC2568-0 Power Controller B V PP OUT B V CC OUT
Slot B VPP1 VPP2 VCC VCC Motherboard PC Card B
Figure 3. Basic VPP and VCC Switch MIC2568 8 May 2003
MIC2568
5V-Only VCC Application To use the MIC2568 in applications where only a single 5V VCC is available (no 3.3V VCC), connect VCC5 (5V supply) to the VCC3 IN pin. Refer to Figure 4. In this configuration, VCC OUT will be 5V when either VCC3 switch or VCC5 switch is enabled.
Micrel
System Power Supply 5V Slot A VPP1
ABV CC3
Address and data lines between logic controller and PCMCIA cards not shown.
IN
ABV CC5
IN
VPP2 VCC VCC
PC Card A
A EN1 A EN0 A V CC5 EN Dual-Slot PC Card Logic Controller A V CC3 EN B EN1 B EN0 B V CC5 EN B V CC3 EN GND
A V PP OUT A V CC OUT MIC2568-0 Power Controller B V PP OUT B V CC OUT
Slot B VPP1 VPP2 VCC VCC Motherboard PC Card B
Figure 4. 5V-Only VCC Application
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MIC2568
MIC2568
Micrel
Package Information
5.40 (0.213) 5.20 (0.205) 7.90 (0.311) 7.65 (0.301)
DIMENSIONS: MM (INCH)
0.875 (0.034) REF 10.33 (0.407) 10.07 (0.396) 2.00 (0.079) 1.73 (0.068)
10 4
0.22 (0.009) 0.13 (0.005)
0.38 (0.015) 0.25 (0.010) 0.65 (0.0260) BSC
0.21 (0.008) 0.05 (0.002) COPLANARITY: 0.10 (0.004) MAX
0 -8
1.25 (0.049) REF 0.95 (0.037) 0.55 (0.022)
28-Pin SSOP (SM)
4.50 (0.177) 6.40 BSC (0.252) 4.30 (0.169)
DIMENSIONS: MM (INCH)
0.30 (0.012) 0.19 (0.007) 9.80 (0.385) 9.60 (0.378)
1.20 MAX (0.043)
0.20 (0.008) 0.09 (0.003)
0.65 BSC (0.026)
0.15 (0.006) 0.05 (0.002)
8 0
0.75 (0.029) 0.45 (0.018)
28-Pin TSSOP (TS)
MICREL, INC.
TEL
1849 FORTUNE DRIVE SAN JOSE, CA 95131
FAX
USA
+ 1 (408) 944-0800
+ 1 (408) 944-0970
WEB
http://www.micrel.com
The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser's use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. (c) 2003 Micrel, Incorporated.
MIC2568
10
May 2003

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