IR21571 - International Rectifier

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

IR21571
Manufacturer

International Rectifier
ChipWorker Part#

CW329883127
Category

Active Chip
Description

Ballast Control, Below Resonance Protection, Thermal Overload Protection, Protection from Failure to Strike, Programmable Preheat Time and Run Frequency, Programmable Deadtime, Automatic Restart for Lamp Exchange in a 16Pin DIP package
Documentation

Datasheet

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IR21571 Specifications

Attribute	Attribute Value

Part Number	IR21571
Manufacturer	International Rectifier
ChipWorker Part#	CW329883127
Category	Active Chip
Documentation	Datasheet
Mounting Style	Through Hole
Number of Pins	16 Pin
Case/Package	DIP-16
Frequency	45.5kHz ~ 50.5kHz
Supply Voltage (DC)	25.0V (max)
Output Voltage	≥10.0 V
Supply Current	5.5 mA
Part Family	IR21571
Supply Voltage	10.5V ~ 16.5V
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Operating Temperature	-40℃ ~ 125℃
Product Lifecycle Status	Unknown
Packaging	Tube
RoHS	Non-Compliant
Lead-Free Status	Contains Lead

Product Description

Description
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 features such as preheat time & frequency, ignition ramp characteris tics, and running mode operating frequency provide a high degree of flexibility for the ballast design engineer. Comprehensive protection features such as protection from failure of a lamp to strike, filament failures, low dc bus conditions, thermal
overload, or lamp failure during normal operation, as well as an automatic restart function, have been included in the design. The heart of this control IC is a variable frequency oscillator with externally programmable deadtime. Precise control of a 50% duty cycle is accomplished using a T-flip-flop. The IR21571 is available in both 16 pin DIP and 16 pin narrow body SOIC packages.
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
•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

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Ordering Information

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- Carefully tested and packaged by ChipWorker
- Vacuum packed
- Anti-static packaging
- Anti-vibration foam
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- Decapsulation control
- X-ray inspection
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- Electrical testing
- Surface testing

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