GENERAL DESCRIPTION

The M1357 is a monolithic, 4-channel NMOS PWM LED drivers Controller can also be directly programmed through an Serial

Bus Micro-Processor Interface for applications where user defined LED pattern, color, and intensity programmability is a priority.

Optimized for dimming LEDs in 256 discrete steps for Red/Green/Blue (RGB) color mixing and back light applications.

The M1357 includes an internal oscillator , four individual PWM color LED drivers and The open drain outputs directly drive

the LEDs with constant sink current of 15mA per bit.

FEATURES

‧ 4 open drain outputs directly drive LEDs

‧ Constant sink current of 15mA per bit

‧ 256 brightness steps

‧ A0~A3 is External address selection.

‧ Internal oscillator requires no external components

‧ Controlled by Serial Bus Micro-Processor Interface

‧ Internal power-on reset

‧ Noise filter on SCL/SDA inputs

APPLICATIONS

‧ True color LED display driver