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Date: 6/30/04

SP7611A/7612/7614 Low Dropout LED Driver for Any Color LED

© Copyright 2004 Sipex Corporation

FEATURES

■ LED Drivers for parallel connected LEDs

■ Ultra Low Dropout Voltage of 150mV

(SP7614)

■ No EMI, no switching noise

■ Integrated current matching

■ PWM and Analog brightness control

■ Enable/Shutdown control

■ Shutdown current < 1µA

■ Small footprint SC-70 Package

Low Dropout LED Driver for any Color LED

®

APPLICATIONS

■ Next Generation Mobile Phones

■ PDA, DSC, MP3 players

■ Handheld Computers

■ LCD Display Modules

■ Keyboard Backlight

■ LED Displays

TYPICAL APPLICATION SCHEMATIC

DESCRIPTION

The SP761X driver family provides a simple solution for a matched current source any color LED.

The current in the LEDs can be programmed by an external resistor. The Individual LED currents

are 200 x ISET, where ISET is the current through the external resistor connected to the CTRL

pin. The SP7611A is capable of driving four LEDs, while the SP7612 can drive three LEDs. The

SP7614 is designated to drive two high current LEDs. LED1 should always be connected to an

LED in order to have the other LEDs driven with a matched current to LED1.

The SP7612 and SP7614 have Enable pins. When these devices are disabled, the supply current

drops to 0.01µA typical.

The SP7611A, SP7612 and SP7614 drivers are available in a small footprint 6-pin SC-70

package.

PRELIMINARY

SP7611A/7612/7614

SP7614

6 Pin SC70

1

CTRL

3

N/C

4

GND

2

LED1

6

ON/OFF

5

LED2

Now Available in Lead Free Packaging

VIN

LED1

LED2

GND

CTRL

ON/OFF

ENABLE

VCONTROL

RSET

®

®

SP7614

I SET

P/N

Channel

SP7611A

4

160

40

SP7612

3

120

40

SP7614

2

160

80