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AAT4650 - 5V/3V PC Card Power Switch

General Description

The AAT4650 SmartSwitch is a single channel PC card (PCMCIA) power switch.

It is used to select between two different voltage inputs, each between 2.7V and 5.5V.

An internal switch powers the circuitry from whichever input voltage is higher.

Key Features

  • 2.7V to 5.5V Input Voltage Range.
  • 80m (5V) Typical RDS(ON).
  • Low Quiescent Current 15μA (typ).
  • Reverse-Blocking Switches.
  • Short-Circuit Protection.
  • Over-Temperature Protection.
  • FAULT Flag Output.
  • Temperature Range: -40°C to +85°C.
  • 8-Pin SOP Package.

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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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General Description The AAT4650 SmartSwitch is a single channel PC card (PCMCIA) power switch. It is used to select between two different voltage inputs, each between 2.7V and 5.5V. An internal switch powers the circuitry from whichever input voltage is higher. The device’s output, VCC, is slew rate controlled and current limited, in compliance with PC card specifications. The current limit response time to a short circuit is typically 1μs. The internal P-channel MOSFET switches are configured to break before make; that is, both switches cannot be closed at the same time. Controlled by a 2-bit parallel interface, the four states for VCC are VCC5, VCC3, high impedance, or ground. When in the ground state, VCC is pulled to ground by a 5k resistor.