MP4651

NOT RECOMMENDED FOR NEW DESIGNS

Offline Half-Bridge / LLC WLED Controller

ALTERNATIVE PART

NRFND Datasheet

MP4651 continues to be in production for existing customers. Please consider this alternative for new designs:

MP4653

Real LIPS CC/CV LLC LED Driver Controller with Audible Noise Elimination

Features & Benefits

Secondary Side “Real LIPS” LLC Controller
CC/CV Frequency Control Loop
Audible Noise Elimination
Continuous driving signal at PWM dimming and LED fault condition
9V to 30V Input Voltage Range
Analog and PWM Dimming
Input Under Voltage Lockout
DC Bus Output Over Voltage Protection
DC Bus Short Protection
System Auto-recovery and Hiccup Timer
LED Open, Short Protection
LED Output Over Voltage, Over LED Current Protection
Any Point of LED String Short to GND Protection
Available in SOIC 20 Package

… and many more!

Description

The MP4651 is a high performance off-line LED driver designed for powering the LEDs especially for high power isolated application. The MP4651 utilizes fixed operating frequency PWM control. It outputs two 180 degree phase shifted driving signals for various external power stages. Its enhanced 9V gate driver provides adequate driving capability for the external MOSFETs and directly drives the external gate driving transformer. The MP4651 implements fast and high contrast ratio PWM dimming to the LEDs. PWM dimming is controlled with either an external DC voltage or PWM signal. The burst dimming frequency can be synchronized to an external synchronizing signal. The Built-in fault management features include open LED protection, short LED protection, over voltage protection, and over temperature protection. The protection interface is flexible for various setups and is easy to use. MP4651 integrates a delay timer to recover the system. The MP4651 is available in a 16-pin SOIC package.