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Oct 23-06

SP7615 Four Channel Constant Current LED Driver

© Copyright 2006 Sipex Corporation

SP7615

The SP7615 is a linear constant current driver designed to drive multiple LEDs in series from

a high input voltage rail. The driver acts as a high current matched, four-channel current

source ensuring constant LED current for a range of input voltages. The SP7615 allows

implementing the lowest cost LED driver for a variety of applications. Internal circuitry

maintains the pre-set constant current output for a wide voltage range at the LED outputs

(LED1,2,3,4). LED current can be adjusted up to 125mA per string with an external resistor.

the EN pin. Fast EN turn-on and turn-off time allows for very fast PWM dimming frequencies,

completely eliminating flicker. The built-in thermal protection automatically adjusts LED

current to prevent overheating.

TYPICAL APPLICATION SCHEMATIC

FEATURES

■ Cost Effective LED driver

■ Constant current output ideal for Driving LED strings

■ Four Channel LED Driver provides matched LED

current

■ Current adjusted via an external resistor

■ PWM dimming possible

■ Small 2mm x 3mm DFN package

■ Outputs can be connected in parallel to

increase drive

■ Constant current for wide cathode voltage range

(1.0V to 16V)

■ Highly integrated design, minimal components

■ Thermal shutdown protects the driver

APPLICATIONS

■ Next Generation Mobile Phones

■ PDA, DSC, MP3 Players

■ Handheld Computers

■ LCD Display Modules

■ Keyboard Backlight

■ LED Displays

Four Channel Constant Current LED Driver

Now Available in Lead Free Packaging

DESCRIPTION

SP7615

8 Pin DFN

8

7

6

5

1

2

3

4

LED1

LED2

LED3

LED4

EN

GND

ISET

VCC

EN

GND

C1

1n

R1

SP7615

®

EN

GND

LED1

LED2

LED3

LED4