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MIC94040

Micrel Semiconductor
Part Number MIC94040
Manufacturer Micrel Semiconductor
Description (MIC94040 - MIC94043) RDSON 3A High Side Load Switch
Published Apr 19, 2011
Detailed Description MIC94040/1/2/3 28mΩ RDSON 3A High Side Load Switch in 1.2mm x 1.2mm MLF® package General Description The MIC94040/1/2/3...
Datasheet PDF File MIC94040 PDF File

MIC94040
MIC94040

Overview
MIC94040/1/2/3 28mΩ RDSON 3A High Side Load Switch in 1.
2mm x 1.
2mm MLF® package General Description The MIC94040/1/2/3 is 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 28mΩ RDSON 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.
2mm x ® 1.
2mm 4 pin MLF package.
The MIC94040 and MIC94041 feature rapid turn on, while the MIC94042 and MIC94043 provide a slew rate controlled softstart turn-on of 100µs.
The soft-start feature is provided to prevent an in-rush current event from pulling down the input supply voltage.
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.
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.
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.
Datasheets and support documentation can be found on Micrel’s web site at: www.
micrel.
com.
Features ∑ ∑ ∑ ∑ ∑ ∑ ∑ ∑ ∑ ∑ ∑ ∑ ∑ ∑ ∑ ∑ ∑ ∑ ∑ 28mΩ RDSON 3A continuous operating current ® 1.
2mm x 1.
2mm space saving 4-pin MLF package 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: MIC94042, MIC94043 Load discharge circuit: MIC94041, MIC94043 Ultra fast turn off time Junction operating temperature from -40ºC to +125...


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