UNISONIC TECHNOLOGIES CO., LTD

L4120

Preliminary

CMOS IC

www.unisonic.com.tw

1 of 4

Copyright © 2014 Unisonic Technologies Co., Ltd

QW-R125-031.a

40V/1.2A INTEGRATED

POWER LED DRIVER

DESCRIPTION

The UTC L4120 is a continuous conduction mode inductive

step-down converter, designed for driving single or multiple series

connected LEDs. Using a few external components.

The UTC L3080 has a build-in power switch, based on different

input voltage, The UTC L4120 can drive several 1W or 3W LEDs.

The device has the function of thermal shutdown protection and

LED short-circuit/open-circuit protection.

FEATURES

* Up to 1.2A output current

* High efficiency (up to 97%)

* Wide input voltage range: 5V~30V

* Typical ±5% output current accuracy

* Single DIM pin on/off and brightness control using DC voltage or

PWM signal

* Internal thermal shutdown protection.

* Adjustable Constant LED Current

1

SOT-89-5

ORDERING INFORMATION

Ordering Number

Package

Packing

Lead Free

Halogen Free

L4120L-AB5-R

L4120G-AB5-R

SOT-89-5

Tape Reel

(1) R: Tape Reel

(2) AB5: SOT-89-5

(3) L: Lead Free, G: Halogen Free

L4120L-AB5-R

(1)Packing Type

(2)Package Type

(3)Lead Free

MARKING