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MIC94070/71/72/73
High Side Power Switches
General Description
The MIC94070-73 are high-side load switches designed for operation between 1.7V to 5.5V. The devices contain a low on-resistance P-channel MOSFET that supports 1.2A of continuous current. The MIC94071 and MIC94073 feature an active load discharge circuit which insures capacitive loads retain no charge when the main switch is in an OFF state. MIC94070-71 feature rapid turn on while MIC94072-73 provide a slew rate controlled Soft-Start turn-on of 800s (typical) to prevent in-rush current from glitching supply rails. An active pull-down on the enable input keeps MIC94070-73 in a default OFF state until the EN pin is pulled to a high level. Built-in level shift circuitry allows low voltage logic signals to switch higher supply voltages, or vice versa; high level logic signals can control low level voltages. MIC94070-73's operating voltage range makes them suitable for 1-cell Lithium ion and 2- to 3-cell NiMH/NiCad/Alkaline powered systems, as well as all 5V applications. Their low operating current of 2A and low shutdown current of <1A maximize battery life. Data sheets and support documentation can be found on Micrel's web site at: www.micrel.com.
Features
* * * * * * * * * * 1.7V to 5.5V input voltage range 1.2A continuous operating current 3A pulse current 120m RDSON (typical) Built-in level shift for control logic; can be operated by 1.5V logic. Low 2A quiescent current Soft-Start: MIC94072/73 Micro-power shutdown <1A Load discharge circuit: MIC94071, MIC94073 (R) Space saving 1.2mm x 1.6mm Thin MLF package
Applications
* Load switch in portable applications: - Cellular phones - PDAs - MP3 players - Digital Cameras - Portable instrumentation * Battery switch-over circuits * Level translator
________________________________________________________________________________________________________
Typical Application
MIC94070, 72 Load Switch Application
MIC94071, 73 Load Switch with Capacitive Load Discharge
MLF and MicroLeadFrame are registered trademarks of Amkor Technologies, Inc. Micrel Inc. * 2180 Fortune Drive * San Jose, CA 95131 * USA * tel +1 (408) 944-0800 * fax + 1 (408) 474-1000 * http://www.micrel.com
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MIC94070/71/72/73
Ordering Information
Part Number Standard -- -- -- -- -- -- -- --
Notes 1. Under-bar symbol on SC-70 Pb-free packages may not be to scale.
Part Marking Standard -- -- -- -- -- -- -- --
(1)
Pb-Free MIC94070YC6 MIC94071YC6 MIC94072YC6 MIC94073YC6 MIC94070YMT MIC94071YMT MIC94072YMT MIC94073YMT
Pb-Free 70P 71P 72P 73P P70 P71 P72 P73
Fast Turn On
SoftStart
Load Discharge
Package SC-70-6 SC-70-6 SC-70-6 SC-70-6 1.2mm x 1.6mm Thin MLF
(R) (R) (R) (R)

1.2mm x 1.6mm Thin MLF 1.2mm x 1.6mm Thin MLF 1.2mm x 1.6mm Thin MLF
Pin Configuration
SC-70-6 (C6)
1.2x1.6 mm Thin MLF (MT)
(R)
Pin Description
Pin Number SC-70 1 2,5 4 3 6 MLF 1 2 3 4 -Pin Name VOUT GND VIN EN NIC Pin Function Drain of P-channel MOSFET. Ground and the backside pad (MLF only) should both be connected to electrical ground. Source of P-channel MOSFET. Enable (Input): Active-high CMOS compatible control input for switch A. Do not leave floating. No Internal Connection. A signal or voltage applied to this pin will have no effect on device operation.
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Absolute Maximum Ratings (1)
Input Voltage (VIN)................................................ +6V Enable Voltage (VEN) .......................................... +6V (3) Continuous Drain Current (ID) (R) TA = 25C (MLF ) ....................................... 1.2A TA = 25C (SC-70) ...................................... 1.2A (4) Pulsed Drain Current (IDP) ............................. 3.0A (4) Continuous Diode Current (IS) ..................... -50mA Storage Temperature (Ts) ............... -55C to +150C (6) ESD Rating - HBM ...........................................4KV
Operating Ratings (2)
Input Voltage (VIN) ................................ +1.7 to +5.5V Junction Temperature (TJ)...............-40C to +125C Package Thermal Resistance SC-70-6 (JA) ........................................ 240C/W (R) 1.2mm x 1.6mm MLF (JA).................. 172C/W (R) (3) 1.2mm x 1.6mm MLF (JC) .............. 134C/W
Electrical Characteristics
TA = 25C, bold values indicate -40C< TA < +85C, unless noted. Symbol VEN_TH IQ IEN ISHUT-Q ISHUT-SWITCH RDS(ON) Parameter Enable Threshold Voltage Supply Current Enable Input Current Shutdown Current OFF State Leakage Current P-Channel Drain to Source ON Resistance SC-70 Package Condition VIN = 1.8V to 4.5V, ID = -250A VIN = 1.7V to 4.5V, ID = -250A VIN = VEN = 5.5V, ID = OPEN Measured on the VIN pin (7) VIN = VEN = 5.5V, ID = OPEN VIN = +5.5V, VEN = 0V, ID = OPEN Measured on the VIN pin (7) VIN = +5.5V, VEN = 0V, ID = SHORT Measured on VOUT (7) VIN = +5.0V, ID = -100mA, VEN = 1.5V VIN = +4.5V, ID = -100mA, VEN = 1.5V VIN = +3.6V, ID = -100mA, VEN = 1.5V VIN = +2.5V, ID = -100mA, VEN = 1.5V VIN = +1.8V, ID = -100mA, VEN = 1.5V VIN = +1.7V, ID = -100mA, VEN = 1.5V RDS(ON) P-Channel Drain to Source ON Resistance MLF Package VIN = +5.0V, ID = -100mA, VEN = 1.5V VIN = +4.5V, ID = -100mA, VEN = 1.5V VIN = +3.6V, ID = -100mA, VEN = 1.5V VIN = +2.5V, ID = -100mA, VEN = 1.5V VIN = +1.8V, ID = -100mA, VEN = 1.5V VIN = +1.7V, ID = -100mA, VEN = 1.5V RSHUTDOWN Turn-Off Resistance VIN = +3.6V, ITEST = 1mA, VEN = 0V MIC94071, 73 120 130 145 165 200 210 100 110 125 145 180 190 200 170 185 210 225 260 285 160 165 180 200 240 265 400 m m m m m m m m m m m m 50nA 1 A 2 25nA 4 1 A A Min 0.5 0.4 50nA Typ Max 1.2 1.2 5 Units V V A
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Electrical Characteristics (Dynamic)
VIN = 5V; TA = 25C, bold values indicate -40C< TA < +85C, unless noted. Symbol tON_DLY Parameter Turn-On Delay Time Condition VIN = +3.6V, ID = -100mA, VEN = 1.5V MIC94070, 71 VIN = +3.6V, ID = -100mA, VEN = 1.5V MIC94072, 73 tON_RISE Turn-On Rise Time VIN = +3.6V, ID = -100mA, VEN = 1.5V MIC94070, 71 VIN = +3.6V, ID = -100mA, VEN = 1.5V MIC94072, 73 500 800 1500 s 0.5 1 5 s 700 1200 s Min Typ 0.85 Max 1.5 Units s
tOFF_DLY
Turn-Off Delay Time
VIN = +3.6V, ID = -100mA, VEN = 1.5V MIC94070, 71 VIN = +3.6V, ID = -100mA, VEN = 1.5V MIC94072, 73
100 60 60 60
200 200 100 100
ns ns ns ns
tOFF_FALL
Turn-Off Fall Time
VIN = +3.6V, ID = -100mA, VEN = 1.5V MIC94070, 71 VIN = +3.6V, ID = -100mA, VEN = 1.5V MIC94072, 73
Notes: 1. 2. 3. 4. 5. 6. 7. Exceeding the absolute maximum rating may damage the device. The device is not guaranteed to function outside its operating rating. With backside thermal contact to PCB. Pulse width <300s with < 2% duty cycle. Continuous body diode current conduction (reverse conduction, i.e. VOUT to VIN) is not recommended. Devices are ESD sensitive. Handling precautions recommended. HBM (Human body model), 1.5k in series with 100pF. Measured on the MIC94070YMT, for other part numbers, please contact Micrel.
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Typical Characteristics
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Functional Characteristics MIC94070
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MIC94070/71/72/73
MIC94071
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MIC94070/71/72/73
MIC94072
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MIC94070/71/72/73
MIC94073
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MIC94070/71/72/73
Package Information
6-Pin SC-70 (C6)
4-Pin Thin MLF (MT)
(R)
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Recommended Land Pattern for MLF 1.2x1.6 4 Lead
Optional for maximum thermal performance. Heatsink should be connected to GND plane of PCB for maximum thermal performance. Disclaimer: This is only a recommendation based on information available to Micrel from its suppliers. Actual land pattern may have to be significantly different due to various materials and processes used in PCB assembly. Micrel makes no representation or warranty of performance based on the recommended land pattern."
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com
The information furnished by Micrel in this data sheet 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 a Purchaser's own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. (c) 2007 Micrel, Incorporated.
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