Hysteretic Boost-Buck (?uk) LED Driver IC

The AT9933 is a variable frequency PWM Controller IC, designed to control an LED lamp driver using a low-noise boost-buck (,uk) 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. Input current control enables current limiting during startup, input under-voltage and output overload conditions. The AT9933 provides 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. The AT9933 based LED Driver is ideal for automotive LED lamps. The part is rated for up to 125C ambient temperatures and is AEC-Q100 compliant. By Supertex, Inc.
AT9933 's PackagesAT9933 's pdf datasheet

AT9933 Pinout, Pinouts
AT9933 pinout,Pin out
This is one package pinout of AT9933,If you need more pinouts please download AT9933's pdf datasheet.

AT9933 Application circuits
AT9933 circuits
This is one application circuit of AT9933,If you need more circuits,please download AT9933's pdf datasheet.

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