AT9933 Datasheet (Microchip) - Hysteretic Boost-Buck LED Driver

AT9933, Hysteretic Boost-Buck LED Driver

The AT9933 is a variable frequency PWM controller IC, designed to control an LED lamp driver using a low-noise boost-buck (Ćuk) topology.

It uses patent-pending Hysteretic Current-mode control to regulate both the input and the output currents.

This enables superior input surge immunity without the

AT9933 Features

* AEC-Q100 Automotive Qualified, See Product Identification System

* Constant Current LED Driver

* Steps Input Voltage Up or Down

* Low Electromagnetic Interference (EMI)

* Variable Frequency Operation

* Internal 75V Linear Regulator

* Input an