Copyright

© ANPEC Electronics Corp.

Rev. A.3 - Jul., 2013

APL3546

www.anpec.com.tw

1

ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and

advise customers to obtain the latest version of relevant information to verify before placing orders.

Power -Distribution Switches with Soft Start

•

78m

Ω High Side MOSFET

•

2.5A Continuous Current

•

Soft Start Time Programmable by External

Capacitor

•

Wide Supply Voltage Range: 4.5V to 24V

•

Current Limit and Short Circuit Protections

•

Under Voltage Lockout Protection

•

Over-temperature Protection

•

Logic Level Enable Input

•

Lead Free and Green Devices Available (RoHS

Compliant)

The APL3546 is a power-distribution switch with some

protection functions that can deliver current up to 2.5A.

The device incorporates a 78m

Ω N-channel MOSFET

power switch that is controlled by an enable logic pin and

has a SS pin dedicated to soft start ramp-up rate control

that can be used in application where the inrush current

is concerned.

Features

General Description

Applications

•

TFT LCD Modules

•

Notebook and Desktop Computers

•

USB Ports

•

High-side Power Protection Switches

The device integrates some protection features, includ-

ing current limit protection, short circuit protection, over-

temperature protection and UVLO. The current limit and

short circuit protection can protect down-stream devices

from catastrophic failure by limiting the output current at

current limit threshold during over-load or short circuit

events. When VOUT drops below V

the current to a lower and safe level. The over-tempera-

ture protection function shuts down the N-channel

MOSFET power switch when the junction temperature

UVLO function keeps the power switch in off state until

there is a valid input voltage present.

Simplified Application Circuit

VIN

VOUT

GND

APL3546

SS

EN