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IR21571 Datasheet FULLY INTEGRATED BALLAST CONTROLLER

Manufacturer: International Rectifier (now Infineon)

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General Description

• Thermal overload protection • Programmable deadtime • Integrated 600V level-shifting gate driver • Internal 15.6V zener clamp diode on VCC • Micropower startup (150uA) • Latch immunity protection on all leads • ESD protection on all leads Packages The IR21571 is a fully integrated, fully protected 600V ballast control IC designed to drive virtually all types of rapid start fluorescent lamp ballasts.

Externally programmable

Overview

Data Sheet PD No.

60179-I IR21571(S) FULLY INTEGRATED BALLAST CONTROL.

Key Features

  • Programmable preheat time & frequency.
  • Programmable ignition ramp.
  • Protection from failure-to-strike.
  • Lamp filament sensing & protection.
  • Protection from operation below resonance - 0.2V CS threshold sync’d to falling edge on LO.
  • Protection from low-line condition.
  • Automatic restart for lamp exchange.

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