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AAT4621 - PC Card Current Limit Interface and Capacitor Charger

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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Datasheet Details

Part number AAT4621
Manufacturer AAT
File Size 802.24 KB
Description PC Card Current Limit Interface and Capacitor Charger
Datasheet download datasheet AAT4621 Datasheet

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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 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.