點晶科技股份有限公司

SILICON TOUCH TECHNOLOGY INC.

DD331

High CONSTANT CURRENT LED DRIVERS

Version:A.002

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DD331

4-Channel Flexible LED Pre-Driver

General Description

DD331 is a 4-channel LED pre-driver. It could provide constant-current to drive LED

with four N-type MOSFETs and external resistors. The four output enable terminals are

designed to drive LED with PWM functions. The maximum voltage and current in LED

string are determined by specification of N-type MOSFET.

Features

◆

Four independent LED output channels enable terminals, and current adjustment.

◆

Flexible in system design:

Maximum constant current output (ILED),

maximum sinking output voltage (VLED), and

minimum output voltage

are determined by the characteristic of N-type MOSFET

◆

Fast dimming frequency

(determined by gate capacitance of MOSFET)

◆

Supply voltage range: 5V ~ 18V

Applications

LED architectural or entertainment lighting

LED general or specialty illumination

LED backlighting applications

Package Types

SOP16, SSOP16