ML4832 Datasheet PDF | Micro Linear

Micro Linear ML4832

The ML4832 is a complete solution for a dimmable/nondimmable, high power factor, high efficiency electronic ballast. The BiCMOS ML4832 contains controllers for “boost” type power factor correction as well as for a dimming ballast. The power factor circuit uses the average current sensing method with a gain modulator and overvoltage protection.

Part No.	ML4832
Datasheet	ML4832 Download
Manufacturer	Micro Linear
Description	Electronic Dimming Ballast Controller
Buy	Stock & Price

GENERAL DESCRIPTION

This system produces a power factor of better than 0.99 with low input current THD at > 95% efficiency. Special care has been taken in the design of the ML4832 to increase system noise immunity by using a high amplitude oscillator, and a current-fed multiplier. An overvoltage protection comparator inhibits the PFC section in the event of a lamp out or lamp failure condition. The ballast section provides for programmable starting scenarios with programmable preheat and lamp out-ofsocket interrupt times. The IC controls lamp output through frequency modulation using lamp current feedback.

FEATURES

s s s s s s s s s s Complete power factor correction and dimming ballast control in one IC Low distortion, high efficiency continuous boost, average current sensing PFC section Programmable start scenario for rapid or instant start lamps Lamp current feedback for dimming control Variable frequency dimming and starting Programmable restart for lamp out condition to reduce bal...