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IZ9921

更新时间： 2024-09-16 11:46:35

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IZ9921 数据手册

The IZ9921M, IZ9922M and IZ9923M are high-voltage LED driver control ICs with built-in

MOSFET switch and intended for LED lighting control. They allow efficient operation of LED strings from

voltage sources ranging up to 400 VDC. The IZ9921M/22M/23M includes an internal high-voltage

switching MOSFET controlled with fixed off-time T_OFFof approximately 10 µs. The LED string is driven

at constant current, thus providing constant light output and enhanced reliability. The output current is

internally fixed at 20 mA for IZ9921M, 50 mA for IZ9922M and 30 mA for IZ9923M. The peak current

control scheme provides good regulation of the output current throughout the universal AC line voltage

range of 85 to 264 VAC or DC input voltage of 20 to 400 V.

FEATURES:

APPLICATIONS:

 Operating temperature range -40⁰С … +85 ⁰С

 ON-resistance of the MOSFET switch

210 Ohm

 Decorative Lighting

 Low Power Light Fixtures

 LED Signs and Displays

 Architectural Lighting

 Incandescent Replacements

 Industrial Lighting

 OFF-state breakdown voltage of the

MOSFET switch not less 500 V

Figure 1 – Block diagram

Ver. 1.0

Dec. 2011

12 3 4 5 6 7

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