www.fairchildsemi.com

REV. 1.0.4 6/4/04

Typical Applications

I1

I2

I3

I4

GND

FAN5611

Four Diode Control

CTRL

I1

I2

I3

I4

GND

FAN5613

Four Diode Control With ON/OFF

CTRL

ENABLE

ON/OFF

Two Diode Control with ON/OFF

I3/I4

I1/I2

GND

FAN5614

CTRL

ON/OFF

ENABLE

Three Diode Control with ON/OFF

I1

I2

I3

GND

FAN5612

CTRL

ON/OFF

ENABLE

Features

• LED Drivers for parallel-connected LEDs

• Ultra-low voltage drop (< 300mV) to support direct

Li-ion applications

• No EMI, no switching noise

• No external components needed for current matching

• Both analog and PWM brightness control

•FAN5611, FAN5613 feature up to 160mA bias current

(up to 40mA for each LED)

•FAN5612 features up to 120mA bias current (up to 40mA

for each LED)

•FAN5614 features up to 160mA bias current (up to 80mA

for each LED)

• Enable/Shutdown control (FAN5612, FAN5613,

FAN5614)

• Shutdown current < 1

µA

• Small footprint SC-70 and 2x2 MLP

Applications

• Cell Phones

•PDA, DSC, MP3 Players

• Handheld Computers

• LCD Display Modules

•Keyboard Backlight

• LED Displays

General Description

The FAN5611/FAN5612/FAN5613/FAN5614 driver family

provides matched current source bias for white, blue or any

color LEDs. The current in the LEDs can be programmed by

an external resistor. The individual LED currents are 200 x

connected to the CTRL pin. The FAN5611 and the FAN5613

are capable of driving four LEDs, while the FAN5612 can

drive three LEDs. The FAN5614 is designated to drive two

high current LEDs. In any case, at least I1 should be always

connected to an LED in order to have the other LEDs driven

with a matched current to I1.

The FAN5612, FAN5613 and FAN5614 have Enable pin.

When these devices are disabled, the supply current drops to

less than 1

µA.

The FAN5611, FAN5612 and FAN5614 drivers are available

in a 6-lead SC-70 package. The FAN5613 is available in an

8-lead MLP package.

FAN5611/FAN5612/FAN5613/FAN5614

Low-Dropout LED Drivers for White, Blue or any

Color LED