MIC94041YFL-TR

MIC94040/1/2/3 28 mΩ RDS(ON) 3A High-Side Load Switch in 1.2 mm x 1.2 mm FDFN Package Features General Description • 28 mΩ RDS(ON) • 3A Continuous Operating Current • Space-Saving 1.2 mm x 1.2 mm 4-Lead FDFN Package • Input Voltage Range: 1.7V to 5.5V • Internal Level Shift for CMOS/TTL Control Logic • Ultra-Low Quiescent Current • Micropower Shutdown Current • Soft-Start: MIC94042, MIC94043 • Load Discharge Circuit: MIC94041, MIC940483 • Ultra-Fast Turn-Off Time • –40°C to +125°C Junction Operating Temperature The MIC94040, MIC94041, MIC94042, and MIC94043 are a family of high-side load switches designed to operate from 1.7V to 5.5V input voltage. The load switch pass element is an internal 28 mΩ RDS(ON) P-channel MOSFET which enables the device to support up to 3A of continuous current. Additionally, the load switch supports 1.5V logic level control and shutdown features in a tiny 1.2 mm x 1.2 mm 4-lead FDFN package. Applications The MIC94041 and MIC94043 feature an active load discharge circuit which switches in a 200Ω load when the switch is disabled to automatically discharge a capacitive load. • • • • • • • • Cellular Phones Portable Navigation Devices (PND) Personal Media Players (PMP) Ultra-Mobile PCs Portable Instrumentation Other Portable Applications PDAs Industrial and Datacom Equipment The MIC94040 and MIC94041 feature rapid turn on, while the MIC94042 and MIC94043 provide a slew rate controlled soft-start turn-on of 100 µs. The soft-start feature is provided to prevent an in-rush current event from pulling down the input supply voltage. An active pull-down on the enable input keeps the MIC94040/1/2/3 in a default OFF state until the enable pin is pulled above 1.2V. Internal level shift circuitry allows low voltage logic signals to switch higher supply voltages. The enable voltage can be as high as 5.5V and is not limited by the input voltage. Package Type MIC94040/1/2/3 4-Lead 1.2 mm x 1.2 mm FDFN (Top View) VOUT 1 4 EN GND 2 3 VIN  2021 Microchip Technology Inc. and its subsidiaries The MIC94040/1/2/3 operating voltage range makes them ideal for Lithium ion and NiMH/NiCad/Alkaline battery powered systems, as well as non-battery powered applications. The devices provide low quiescent current and low shutdown current to maximize battery life. DS20006607A-page 1 MIC94040/1/2/3 Typical Application Circuits MIC94040 (Ultra-Fast Turn-On) MIC94042 (Soft-Start) DS20006607A-page 2 MIC94041 (Ultra-Fast Turn-On w/ Auto-Discharge) MIC94043 (Soft-Start w/ Auto-Discharge)  2021 Microchip Technology Inc. and its subsidiaries MIC94040/1/2/3 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings † Input Voltage (VIN) ......................................................................................................................................................+6V Enable Voltage (VEN) ..................................................................................................................................................+6V Continuous Drain Current (ID) (Note 1) TA = +25°C.................................................................................................................................................................. ±3A TA = +85°C.................................................................................................................................................................. ±2A Pulsed Drain Current (IDP) (Note 2) .........................................................................................................................±6.0A Continuous Diode Current (IS) (Note 3) ................................................................................................................–50 mA ESD Rating (HBM, Note 4) ........................................................................................................................................ 3 kV Operating Ratings †† Input Voltage (VIN) .................................................................................................................................... +1.7V to +5.5V † Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational sections of this specification is not intended. Exposure to maximum rating conditions for extended periods may affect device reliability. †† Notice: The device is not guaranteed to function outside its operating ratings. Note 1: With thermal contact to PCB. See Thermal Considerations section. 2: Pulse width