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AAT4651 - 5V/3V PC Card Power Switch

General Description

The AAT4651 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

  • SmartSwitch™ 2.7V to 5.5V Input Voltage Range 80mΩ (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 or TSSOP Package.

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Datasheet Details

Part number AAT4651
Manufacturer Advanced Analogic Technologies
File Size 377.97 KB
Description 5V/3V PC Card Power Switch
Datasheet download datasheet AAT4651 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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5V/3V PC Card Power Switch General Description The AAT4651 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 three states for VCC are VCC5, VCC3, or ground. When in the ground state, VCC is pulled to ground by an 200Ω resistor.