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

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

l 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

l Fast dimming frequency (determined by gate capacitance of MOSFET)

l Supply voltage range: 5V ~ 18V