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AT9933 - Hysteretic Boost-Buck (cuk) LED Driver

Description

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

The AT9933 uses patent-pending hysteretic current-mode control to regulate both the input and the output currents.

Features

  • Constant current LED Driver Steps input voltage Up or Down Low EMI Variable frequency operation Internal 8 to 100V linear regulator Input and output current sensing Input current limit Enable & PWM dimming Ambient temperature rating up to 125°C Meets AEC-Q100 requirements General.

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Datasheet Details

Part number AT9933
Manufacturer Supertex
File Size 537.49 KB
Description Hysteretic Boost-Buck (cuk) LED Driver
Datasheet download datasheet AT9933 Datasheet

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Full PDF Text Transcription

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www.DataSheet4U.com AT9933 Hysteretic Boost-Buck (Ćuk) LED Driver IC Features ► ► ► ► ► ► ► ► ► ► Constant current LED Driver Steps input voltage Up or Down Low EMI Variable frequency operation Internal 8 to 100V linear regulator Input and output current sensing Input current limit Enable & PWM dimming Ambient temperature rating up to 125°C Meets AEC-Q100 requirements General Description The AT9933 is a variable frequency PWM controller IC, designed to control an LED lamp driver using a low-noise boost-buck (Ćuk) topology. The AT9933 uses patent-pending hysteretic current-mode control to regulate both the input and the output currents. This enables superior input surge immunity without the necessity for complex loop compensation.
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