LC3320H

Tiny SOT23-6, 1.9A, 1MHz LED Driver DC/DC

L C3320H

General Description

The LC3320H is an inductor-based DC/DC boost converter designed to drive LED arrays. 2A switching current allows LC3320H to be used in different 7' to 10' LCD panel backlights (3*13 LED arrays typically).

A constant frequency 1MHz PWM control scheme is employed in this IC, which means tiny external com-ponents can be used. Specifically, 1mm tall 4.7μH inductor and 0.47μF output capacitor for the typical application is sufficient.

There are two frequency range of PWM mode for LED brightness control. For LC3320HA , PWM dimming frequency is range from 100Hz to 10KHz, and for LC3302HB, frequency 20KHz to 1MHz is available.

The LC3320H is available in standard SOT23-6. Features

● VIN Operating Range : 2.8V to 28V ● Low 200mV Feedback Voltage

● Cycle by Cycle Current Limit: 1.9A ● Internal Power N-MOSFET Switch ● Wide Range for PWM Dimming: LC3320HA:100Hz~10KHz

LC3320HB: 20KHz~1MHz

● Over Voltage Protection

● Over Temperature Protection

● Small SOT23-6 Packages

● RoHS Compliant and Halogen Free

Application

● 7’-10’ LED Panel Backlight

● Portable DVD/TV

●Car GPS

● Digital Photo Frame

● EPC

Typical Application

Circuit for driving 39 WLEDs

LC3320H

Tiny SOT23-6, 1.9A, 1MHz LED Driver DC/DC Pin Configuration and Description

Ordering and Marking Information

Remark: for marking information,please see sample or contact our sales for more detail infomation.

Absolute Maximum Ratings

Electrical Characteristics

o

Package Information

SOT23-6

A1

H

L

SOT-23-6Surface Mount Package

A