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.
Features
- Switch mode controller for boost, SEPIC & 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 compensation.
- Linear and PWM dimming.
- Programmable jitter to reduce EMI.
- +/-1.0A MOSFET gate driver.
- Output short circuit protection.
- Output over voltage protection.
- Programmable hiccup timer.
- Temp.
AT9917_Supertex.pdf
