AAT4621 - PC Card Current Limit Interface and Capacitor Charger
Skyworks Solutions
General Description
The AAT4621 SmartSwitch family is a current limited P-channel MOSFET power switch designed for high-side load-switching applications in PC Card GSM/GPRS/3G modem cards.
Key Features
Operating Voltage Range: 3.0V to 5.5V.
Dual Independent Current Limits.
AAT4621: 75mA to 1200mA.
AAT4621-1: 150mA to 2400mA.
±10% Current Accuracy.
Reverse Current Blocking Protection.
Power Loop.
Low Quiescent Current.
40μA Typical.
1.0μA Max with Switch Off.
65m Typical RDS(ON) at 3V.
System READY Output with Externally Programmable
Hysteresis.
Full PDF Text Transcription for AAT4621 (Reference)
Note: Below is a high-fidelity text extraction (approx. 800 characters) for
AAT4621. For precise diagrams, and layout, please refer to the original PDF.
DATA SHEET AAT4621 PC Card Current Limit Interface and Capacitor Charger General Description The AAT4621 SmartSwitch family is a current limited P-channel MOSFET power sw...
View more extracted text
4621 SmartSwitch family is a current limited P-channel MOSFET power switch designed for high-side 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
