Preliminary Datasheet

LP3361

LP3361 – Ver. 1.0 Datasheet

Nov.-2008

Page 1 of 6

6-Channel Constant Current White LED Driver

General Description

The LP3361 is a low-dropout bias supply for white LEDs is

a high-performance alternative to the simple ballast

resistors used in conventional white LED designs. It

supports 6 white LEDs with regulated constant current for

uniform intensity. The LP3361 maintains low dropout

current regulators. The LP3361 requires a 45mV dropout

at a 20mA load on each output to match the LED brightness.

The brightness of LEDs can be tuned through a pulse width

modulated signal at the PWM pin,the PWM frequency from

200Hz to 10KHz and the Duty from 0 to 100%.

The LP3361 is available in a TDFN-10 package.

Order Information

LP3361 -

□ □ □

F: Pb-Free

Package Type

QV:TDFN-10

Applications

LCD Panel

Cellular and Smart mobile phone

PDA/DSC

PMP

Features

2.7V to 6V Input Voltage

20mA maxim sink current

Dual Panel Driver of WLED

PWM tuned LED brightness through EN pin

Soft Start Function

Built-in Thermal Protection

TDFN-10 Package

RoHS Compliant and 100% Lead (Pb)-Free

Typical Application Circuit

Sub_Panel

2.2uF

ON/OFF

LP3361

11

2

3

1

8

7

4

6

5

9

10

GND

EN1

VDD1

LED1

VDD2

EN2

LED2

LED4

LED3

LED5

LED6

Main_Panel

VBAT

VBAT

Marking Information

Please see website.