AT9932 Overview
The AT9932 is an advanced fixed-frequency PWM controller IC designed to control an LED lamp driver using a boost-buck topology that can step the input voltage up or down automatically. The IC provides fast output current transient response and very low susceptibility to input voltage transients. This allows the lamp driver to pass the rigorous electrical transient requirements of SAE J1455 or ISO 7637-2, making the...
AT9932 Key Features
- Constant Output Current
- Steps Output Voltage Up or Down
- Very Low Susceptibility to Input Voltage
- Frequency Jitter
- Externally Programmable Fixed Switching
- Temperature Foldback with External NTC
- Internal 40V Voltage Regulator
- +/-1A MOSFET Gate Driver
- Short LED Protection
- Open LED Protection
