Jan 09 -08 RevT

SP7612/7614 Low Dropout Linear LED driver

© 2008 EXAR Corporation

Page 1

SP7612 SP7614

FEATURES

LED Drivers for parallel connected LEDs

No EMI, no switching noise

Integrated current matching

PWM and Analog brightness control

Enable/Shutdown control

Shutdown current < 0.01µA

Tiny, RoHS Compliant Lead-Free

Packages: SC-70

Part #

Channels

Maximum Steady

State Current per LED

SP7612

3

40mA

SP7614

2

80mA

DESCRIPTION

The SP7612/4 provides a simple solution for a matched current source for any color LED. The current in the

LEDs can be programmed by an external resistor. The SP7612 is capable of driving three LEDs, while the

SP7614 can drive two LEDs. LED1 should always be connected to an LED and never left open in order to

have the other LEDs driven with a matched current to LED1. The SP7612 and SP7614 feature Enable pins

for flexible on/off control and PWM dimming. SP7612/4 has extremely low (0.01uA typical) shutdown current,

prolonging the battery life and giving the longest standby period possible in today's modern design. It is

available in a small footprint 6-pin SC-70 package.

TYPICAL APPLICATION SCHEMATIC

SP7612 Typical application

Pin outs for SP7611A and SP7612A on page 3

APPLICATIONS

Ultra low cost Handsets

PDA, DSC, MP3 players

Handheld Computers

LCD Display Modules

Keyboard Backlight

LCD Backlight

Low Dropout Linear LED Driver

SP7614

SP7614A

6 Pin SC70

1

CTRL

3

N/C

4

2

VLED1

6

5

ON/OFF

GND

VLED2