Datasheet > SE3901

SE3901

更新时间： 2024-11-05 06:11:03

品牌	Logo	应用领域
思旺 - SEAWARD		电池控制器
页数	文件大小	规格书
8页	330K
描述
Low Power PWM Controller for OFF-LINE Battery Charger

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中文翻译

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数据手册

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SE3901 数据手册

Description

Features

The SE3901 is a green-mode Pulse Width Modulation

(PWM) controller. It is specifically designed for low

power applications such as 5W-20W Adaptors and

Off-line battery Chargers. In these typical

applications, the low standby power, space saving,

and low cost are all required. SE3901 is a perfect

solutions to meet these challenges. The typical

standby power is only 0.13Watt.

Internal Zener Diode

Low Cost Emitter Drive PWM Solution

0.13W Standby Power

Current Mode Operation

Short Circuit Protection

Over-Current Protection

Over-Temperature Protection

Under-Voltage Lockout with Auto-restart

Available in TO-94 Packages

RoHS Compliant and 100% Lead (Pb)-Free

In normal operation, the SE3901 switches on and off

at a fixed switching frequency of 60 kHz. With a

current limit capability of about 420mA, the SE3901

can directly drive the emitter of a high voltage NPN

transistor. When the output power falls below a given

level, the IC enters skip cycle mode to reduce power

consumption.

Application

Battery Chargers

Universal Off-line Power Supplies

Power Adaptors

The SE3901 also features Under-Voltage Lockout ,

Over-Temperature Protection, Over-Current and

Short Circuit Protections.

LED 3W-9W Lighting Solutions with SE1051

The SE3901 is available in TO-94 Packages.

Pin Configuration

TO-94

TOP VIEW

ZENER

OUT

GND

Vcc

Pin Description

Name

VCC

Pin# Function

The power supply of the IC, and is generally connected to opto-coupler's emitter

Supply ground

GND

OUT

The output pin, connected to the emitter of NPN transistor.

The output pin, connected to Internal ZENER

ZENER

Revision 1/20/2009

Preliminary and all contents are subject to change without prior notice.

12 3 4 5 6 7 8

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