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AAT4621 - PC Card Current Limit Interface and Capacitor Charger

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.

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.
  • Only 1.4V Needed for Enable Control Pin.
  • Un.

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Datasheet Details

Part number AAT4621
Manufacturer Skyworks
File Size 844.66 KB
Description PC Card Current Limit Interface and Capacitor Charger
Datasheet download datasheet AAT4621 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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 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.
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