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ML4831 - Electronic Ballast Controller

Description

The ML4831 is a complete solution for a dimmable, high power factor, high efficiency electronic ballast.

Contained in the ML4831 are controllers for “boost” type power factor correction as well as for a dimming ballast.

Features

  • s Complete Power Factor Correction and Dimming Ballast Control on 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 ballast heating Over-Temperature Shutdown replaces external heat sensor for safety PFC Over-Voltage comparator eliminates output “runaway” due.

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Datasheet Details

Part number ML4831
Manufacturer Micro Linear
File Size 325.47 KB
Description Electronic Ballast Controller
Datasheet download datasheet ML4831 Datasheet

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Other Datasheets by Micro Linear

Part Number Description
ML4830 Electronic Ballast Controller
ML4832 Electronic Dimming Ballast Controller
ML4833 Electronic Dimming Ballast Controller
ML4835 Compact Fluorescent Electronic Dimming Ballast Controller
ML4836 Compact Fluorescent Electronic Dimming Ballast Controller

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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JULY 2000 ML4831* Electronic Ballast Controller GENERAL DESCRIPTION The ML4831 is a complete solution for a dimmable, high power factor, high efficiency electronic ballast. Contained in the ML4831 are 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 over-voltage protection. This system produces power factors of better than 0.99 with low input current THD at > 95% efficiency. Special care has been taken in the design of the ML4831 to increase system noise immunity by using a high amplitude oscillator, and a current fed multiplier. An over-voltage protection comparator inhibits the PFC section in the event of a lamp out or lamp failure condition.
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