LP3359

LP3359-datasheet

Ver.1.1

Nov.-2005

1

High performance, Current Source

For Parallel White-LED Driver

General Description

The LP3359 is a parallel white-LED driver with four

matched current outputs. It can supply a total output

current of 100mA over an input voltage range of 3.0V to

5.5V. The amount of constant current sourced to the

outputs is user selectable using one external sense

resistor. LP3359 typically draws 0.01µA when placed in

shutdown, and 180µA when operating in the no-load

condition. If any of the outputs are not used, leave the

pin(s) unconnected.

Brightness can be controlled by PWM techniques or by

adding a DC voltage. A PWM signal can be applied to

the EN/PWM pin to vary the perceived brightness of the

LED.

The LP3359 uses an active-high enable level. The

LP3359 is available in DFN-8 and TSSOP-8 package.

Ordering Information

LP3359 - □ □ □

F: PB-Free

Package

MS: MSOP-8

QV: DFN-8

Features

Regulated IOUT With ± 0.3% Matching Between

Constant Current Outputs

Drives One, Two, Three or Four White LED’s with

No Ballast Resistors

3.0V to 5.5V Input Voltage

Up to 100mA Output Current

Active-High Enable

Very Small Solution Size

Very Low Shutdown Current (0.01µA typical)

Available in DFN-8 ,TSSOP-8 Package

RoHS Compliant and 100% Lead(Pb)-Free

Applications

Cellular and Smart mobile phone

PDA/DSC

LCD Display

Typical Application Circuit

Pin Configurations

LP3359