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AAT4250

Slew Rate Controlled Load Switch

Advanced Analogic Technologies 

General Description

The AAT4250 SmartSwitch is a member of

AnalogicTech’s Application Specific Power MOS-

FET™ (ASPM™) product family. It is a slew rate

controlled P-channel MOSFET power switch

designed for high-side load switching applications.

This switch operates with an input voltage range

from 1.8V to 5.5V, making it ideal for 2.5V, 3.3V, or

5V systems. The part features 1.5ms turn-on and

10µs turn-off time. The AAT4250 has an under-

voltage lockout which turns off the switch when an

under-voltage condition exists. Input logic levels

are TTL compatible. The quiescent supply current

is very low, typically 2µA. In shutdown mode, the

supply current is typically reduced to 0.1µA or less.

The AAT4250 is available in a Pb-free, 5-pin SOT23

(SOT25) package or a Pb-free, 8-pin SC70JW pack-

age and is specified over the -40°C to +85°C tem-

perature range.

AAT4250

Slew Rate Controlled Load Switch

Features

SmartSwitch™

• 1.8V to 5.5V Input Voltage Range

• 120mΩ (5V) Typical RDS(ON)

• Low Quiescent Current:

• Typical 2µA

• Typical 0.1µA with Enable Off

• Only 2.0V Needed for ON/OFF Control

• Temperature Range: -40°C to +85°C

• 5kV ESD Rating

• SOT23-5 or SC70JW-8 Package

Applications

• Hot Swap Supplies

• Notebook Computers

• Personal Communication Devices

Typical Application

INPUT

CIN

1µF

IN

OUT

AAT4250

ON

ON/OFF

GND

GND

OUTPUT

COUT

0.1µF

GND

4250.2006.03.1.3

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