AAT4621 - PC Card Current Limit Interface and Capacitor Charger
AAT
General Description
The AAT4621 SmartSwitch is a current limited Pchannel MOSFET power switch designed for highside load-switching applications in PC Card GSM/GPRS/3G modem cards.
Used in conjunction with a super capacitor, the AAT4621 will ensure that the power ratings of the PCMCIA host are not exceeded at any time.
Key Features
SmartSwitch™.
VIN Range: 3.0V to 5.5V Dual Independent Current Limits.
75mA to 1200mA.
±10% Current Accuracy.
20°C Temperature Band Reverse Current Blocking Protection Power Loop Low Quiescent Current.
40µA Typical.
1.0µA Max with Switch Off 65mΩ Typical RDS(ON) at 3V Only 1.4V Needed for Enable Control Pin System READY Output with External.
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www.DataSheet4U.com AAT4621 PC Card Current Limit Interface and Capacitor Charger General Description The AAT4621 SmartSwitch is a current limited Pchannel MOSFET power s...
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n The AAT4621 SmartSwitch is a current limited Pchannel MOSFET power switch designed for highside load-switching applications in PC Card GSM/GPRS/3G modem cards. Used in conjunction with a super capacitor, the AAT4621 will ensure that the power ratings of the PCMCIA host are not exceeded at any time. Featuring two independent, programmable current limits and a power loop, the AAT4621 can ensure that the super capacitor can be charged without exceeding PCMCIA specifications. The current limit is set by two external resistors allowing a ±10% current limit accuracy over the normal operating temperature range.
AAT4621 Datasheet
