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MIC94060/94061
Micrel
MIC94060/94061
100mSC-70-6 Smart Load Switch Final
General Description
The MIC94060 and MIC94061 are smart high-side load switches housed in the SC-70-6 package. The devices contain a low on-resistance, 100m(max) p-channel MOSFET that is driven by built-in level-shift and slew-rate control circuitry. The low on-resistance of the devices allows for them to support over 2A of continuous current. The MIC94061 features an active pull-down circuit that discharges capacitive loads through a 200 switch when the IC is set to the OFF state. Pull down circuitry keeps the MIC94060/1 in a default OFF state until the EN pin is pulled to a high level. The built-in level shift circuitry allows for a logic signal that may be different from the supply voltage to switch the high-side P-channel MOSFET on or off. The 1s turn-on slew rate control prevents in-rush current from causing glitches on the supply rail. Battery life is saved in portable applications with the IC's low quiescent current of 2A and low shutdown current of <1A. Their 1.8V to 5.5V operating voltage range makes the MIC94060/1 suitable for 1-cell Li Ion, 2- to 3-cell NiMH / NiCad / Alkaline, as well as other sub-5V input applications. Integrating the level-shift and slew-rate control circuitry saves valuable board space and reduces component placement cost compared to discrete solutions. The MIC94060/1 are housed in the TeenyTM SC-70-6 package and have a junction temperature range of -40C to +150C.
Features
* 1.8V to 5.5V input voltage range * Built-in level shift circuitry: Can be driven by 1.5V logic * Low on-resistance p-channel MOSFET: 77m at VGS = 4.5V (typ) 2A continuous current * Built-in slew-rate control: Controlled 1s turn-on rise-time Fast 60ns turn-off fall time * Low 2A quiescent current * <1A micropower shutdown * Built-in fast-off load discharge circuit (MIC94061) * TeenyTM SC-70-6 package * -40C to +150C junction temperature range
Applications
* Load switch in portable applications: Cellular phones PDAs MP3 players Digital cameras Notebook PCs Barcode scanners * Battery switch over circuits * Level translators
Typical Application
VIN
77m9
VIN
Level Shift Slew Rate Control and Load Discharge
77m9
EN
Level Shift and Slew Rate Control
LOAD
LOAD 2009 MIC94061
EN
MIC94060
Load Switch Application
Load Switch Application with Capacitive Load Discharge
Micrel, Inc. * 1849 Fortune Drive * San Jose, CA 95131 * USA * tel + 1 (408) 944-0800 * fax + 1 (408) 944-0970 * http://www.micrel.com
July 2002
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MIC94060/94061
MIC94060/94061
Micrel
Ordering Information
Part Number MIC94060BC6 MIC94061BC6 Load Discharge Circuitry NO YES Marking P54 P55 Junction Temp. Range -40C to +150C -40C to +150C Package SC-70-6 SC-70-6
Pin Configuration
!
"
#
$
MIC94060/1 SC-70-6 (C6)
Pin Description
Pin Number 1 2, 5 3 4 6 Pin Name VOUT GND EN VIN NC Pin Function Drain of P-channel MOSFET. No bypass capacitor required. Ground connections. Enable input. Source of P-channel MOSFET. No bypass capacitor required. No connect
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MIC94060/94061
Micrel
Absolute Maximum Ratings (Note 1)
Input Voltage (VIN) ........................................................ +6V Enable Voltage (VEN) .................................................... +6V Continuous Drain Current (ID) Note 3 TA = 25C .................................................................. 2A TA = 85C ............................................................... 1.4A Pulsed Drain Current (IDP) Note 5 ................................ 6A Continuous Diode Current (IS) Note 7 ..................... -50mA Power Dissipation Note 3 SC-70-6 lead (TA = 85C) .................................. 270 mW Ambient Storage Temperature (TS) ......... -55C to +150C ESD Rating Note 4
Operating Ratings (Note 2)
Input Voltage Range (VIN) ............................... 1.8V to 5.5V Junction Temperature Range (TJ) ........... -40C to +150C Package Thermal Impedance Note 3 JA SC-70-6 lead ............................................... 240C/W
Electrical Characteristics
TA = 25C, unless otherwise specified. Symbol Static VEN(th) IEN IVIN RDS(ON) EN Threshold Voltage EN Input Current (Quiescent Current) OFF State Leakage Current P-Channel Drain-Source On-Resistance VIN = 1.8V to 4.5V, ID = -250A VIN = VEN = 5.5V VEN = OPEN or 0V, VIN = +5.5V VIN = 4.5V, ID = -100 mA; VEN = 1.5V VIN = 3.6V, ID = -100 mA; VEN = 1.5V VIN = 2.5V, ID = -100 mA; VEN = 1.5V VIN = 1.8V, ID = -100 mA; VEN = 1.5V VIN = 3.6V, VEN = 0V or OPEN VIN = 3.6V, ID = -100mA, VEN = 1.5V VIN = 3.6V, ID = -100mA, VEN = 1.5V VIN = 3.6V, ID = -100mA, VEN = 1.5V VIN = 3.6V, ID = -100mA, VEN = 1.5V 0.5 77 85 100 145 200 0.5 2 1.2 4 1 100 115 140 200 300 V A A m m m m Parameter Condition Min Typ Max Units
RSHUTDOWN td(on) tr td(off) tf
Note 1.
Turn-off Impedance (94061)
Dynamic (Note 6) Turn-On Delay Time Turn-On Rise Time Turn-Off Delay Time Turn-Off Fall Time 850 1 100 60 1500 5 150 100 ns s ns ns
TA = 25C unless otherwise noted. Absolute maximum ratings indicate limits beyond which damage to the component may occur. Electrical specifications do not apply when operating the device outside of its operating ratings. The maximum allowable power dissipation is a function of the maximum junction temperature, TJ(Max), the junction-to-ambient thermal resistance, JA, and the ambient temperature, TA. This device is not guaranteed to operate beyond its specified operating rating. Mounted on 1 square-inch pad of 2 oz. copper. IC devices are inherently ESD sensitive. Handling precautions required. Pulse width < 300s with <2% duty cycle. Dynamic specifications are guaranteed by design. Body diode current conduction is not recommended.
Note 2. Note 3. Note 4. Note 5. Note 6. Note 7.
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Micrel
Typical Characteristics
RDS-On Variance with Temperature
1.4
RDS-ON (NORMALIZED) EN THRESHOLD (V) 1.2 1.1 RDS-ON (m) 1 0.9 0.8 0.7 0.6 ID = -250A 0.5 1.5 2 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V) -40 -20 0 20 40 60 80 100 120 140 160
EN Threshold Voltage vs. Input Voltage
500 450 400 350 300 250 200 150 100
On Resistance vs. Input Voltage
VDS = 3.6V 1.3 I = 0.1A D 1.2 1.1 1 0.9 0.8 0.7
IL = 1.5A
TEMPERATURE (C)
50 I = 0.1A L 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V)
500
Voltage Drop vs. Load Current
VIN = 2.5V RISE TIME (s)
10 9 8 7 6 5 4 3 2 1 0
Turn On Time vs. Input Voltage
450 VIN = 1.8V 400 VDROP (mV) 350 300 250 200 150 100 50 0
VIN = 4.5V
0
0.5 1 1.5 2 2.5 LOAD CURRENT (A)
3
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 INPUT VOLTAGE (V)
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Timing Waveforms
Turn-On Response VIN = 3.6V
Enable (1V/div.)
Turn-Off Response VIN = 3.6V
Enable (1V/div.)
Load Current VOUT (1mA/div.) (1V/div.)
TIME (2s/div.)
Load Current (1mA/div.)
VOUT (1V/div.)
TIME (2s/div.)
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Micrel
Package Information
0.65 (0.0256) BSC
1.35 (0.053) 2.40 (0.094) 1.15 (0.045) 1.80 (0.071) 2.20 (0.087) 1.80 (0.071) DIMENSIONS: MM (INCH) 1.00 (0.039) 1.10 (0.043) 0.80 (0.032) 0.80 (0.032) 0.18 (0.007) 0.10 (0.004)
0.30 (0.012) 0.15 (0.006)
0.10 (0.004) 0.00 (0.000)
0.30 (0.012) 0.10 (0.004)
SC-70-6 Pin (C6)
MICREL, INC. 1849 FORTUNE DRIVE
TEL
SAN JOSE, CA 95131
WEB
USA
+ 1 (408) 944-0800
FAX
+ 1 (408) 944-0970
http://www.micrel.com
This information is believed to be accurate and reliable, however no responsibility is assumed by Micrel for its use nor for any infringement of patents or other rights of third parties resulting from its use. No license is granted by implication or otherwise under any patent or patent right of Micrel, Inc. (c) 2002 Micrel, Incorporated
MIC94060/94061
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July 2002

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