MIC94045YFL-TR [Microchip]

The MIC94044 and MIC94045 are high-side load switches designed to operate from 1.7V to 5.5V input voltage. The load switch pass element is an internal 28mΩ RDSON P-channel MOSFET which enables the device to support up to 3A of continuous current. The MIC94044/5 provides a slew rate controlled soft-start turn-on of 1ms (typical) to prevent an in-rush current event from pulling down the input supply voltage. The MIC94045 features an active load discharge circuit which switches in a 200Ω load when the switch is disabled to automatically discharge a capacitive load. 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. The MIC94044/5 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.

• 28mO RDSON
• 3A continuous operating current
• 1.7V to 5.5V input voltage range
• Internal level shift for CMOS/TTL control logic
• Ultra low quiescent current
• Micro-power shutdown current
• Soft-Start: 1ms
• Load discharge circuit: MIC94045
• Ultra fast turn off time
• Junction operating temperature from -40°C to +125°C