AT9917
Features
- AEC-Q100 Automotive Reliability Qualified
- Switch Mode Controller for Boost, SEPIC and
Buck Converters
- Closed-Loop Control of Output Current
- High PWM Dimming Ratio
- Internal 40V Linear Regulator
- Internal 3% Voltage Reference
- Constant Frequency Operation with
Programmable Slope pensation
- Linear and PWM Dimming
- Programmable Jitter to Reduce EMI
- +/- 1A MOSFET Gate Driver
- Output Short-Circuit Protection
- Output Overvoltage Protection
- Programmable Hiccup Timer
- Soft Start
- Temperature Foldback with External NTC
Resistor
Applications
- Automotive LED Driver Applications
General Description
The AT9917 is an advanced fixed frequency PWM IC designed to control single-switch, Boost, Sepic and Buck LED drivers in a Constant Current mode. The controller uses a Peak Current-mode control scheme with programmable slope pensation and includes an internal transconductance amplifier to control the output current with high accuracy. The IC includes a +/- 1A gate driver...
