WS3215 datasheet(1/9 Pages) WINSEMI

Part #	WS3215

Description	40V/1.5AStep-down High Brightness LED Driver

PDF	9 Pages

Scroll/Zoom	100%

Manufacturer	WINSEMI [Shenzhen Winsemi Microelectronics Co., Ltd]

Direct Link	http://www.winsemi.com

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1 / 9 page

Rev.1.0 July.2011

WS

WS3

3

32

2

215

15

Features

■

Simple low parts count

■

Wide input voltage range：8V to 40V

■

Up to 1.5A output current

■

Output current limit protection

■

Over temperature protection

■

Single pin on/off and brightness control using DC

Voltage or PWM

■

Typical 5% output current accuracy

■

Inherent open-circuit LED protection

■

High efficiency (up to 97% )

■

Adjustable LED constant current

Applications

■

MR16 LEDs

■

Automotive lighting

■

Low Voltage industrial lighting

■

illuminated signs

Typical

Typical Application

Application

Application Circuit

Circuit

Description

The WS3215 is a continuous conduction mode inductive

step-down

converter.designed

for

driving

single

or

multiple series LED efficiently from a voltage source

higher than the total LED chain voltage. The device

operates from an input supply between 8V and 30V and

provides an external adjustable output current of up to

1.5A.Depending

upon

supply

voltage

and

external

components, the WS3215 can provide more than 10 watts

of output power. The WS3215 includes the power switch

and a high-side output current sensing circuit .which uses

an external resistor to set the nominal average output

current, and a dedicated DIM input accepts either a DC

voltage or a wide range of pulsed dimming. Applying a

voltage of 0.3V or lower to the DIM pin turns the output off

and switches the device into a low current standby state.

WS3215 using SOT89-5 package .

40V/1.5A

40V/1.5A Step-down

Step-down

Step-down High

High

High Brightness

Brightness

Brightness LED

LED

LED Driver

Driver

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WS3215 Datasheet(PDF) 1 Page - Shenzhen Winsemi Microelectronics Co., Ltd

WS3215 Datasheet(HTML) 1 Page - Shenzhen Winsemi Microelectronics Co., Ltd

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