AT9933 Datasheet, the Automotive Hysteretic Boost-Buck LED Driver IC

This AT9933 is a PWM controller IC, designed to control an LED lamp driver using a low-noise boost-buck. It produces a low-frequency PWM dimming inp

AT9933 Datasheet, the Automotive Hysteretic Boost-Buck LED Driver IC

AT9933 Datasheet, the Automotive Hysteretic Boost-Buck LED Driver IC -This AT9933 is a PWM controller IC, designed to control an LED lamp driver using a low-noise boost-buck. 

It produces a low-frequency PWM dimming input that can accept an external control signal with a duty cycle of 0 – 100% and a high dimming ratio, according to the datasheet.

Therefore, the AT9933 LED driver IC is typically ideal for automotive LED lamps since this IC has features such as :
  1. Constant current LED Driver,
  2.  Ambient temperature rating up to 125°C, 
  3. Meets AEC-Q100 requirements, 
  4. Input and output current sensing, 
  5. Enable & PWM dimming, 
  6. Internal 75V linear regulator, 
  7. Steps input voltage up or down and low EMI.


And the figure above shows the AT9933 typical application circuit (click to enlarge). In the AT9933 datasheet you will find Pin Configuration, Product Marking, functional description (Input Voltage Regulator, PWM Dimming, Current Comparators, Over-voltage Protection, Damping Circuit and etc).

source: supertex.com

Tags: application circuit, Automotive LED lamp, pwm controller, LED Driver, Supertex IC Datasheet


 

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