
The HV9925 is a pulse width modulated (PWM) high-efficiency LED driver control IC with PWM dimming capabilities. It allows efficient operation of high brightness LED strings from voltage sources ranging up to 400VDC. The HV9925 includes an internal high-voltage switching MOSFET controlled with a fixed off-time (TOFF) of approximately 10.5μs. The LED string is driven at constant current, thus providing constant light output and enhanced reliability. Selecting a value of a current sense resistor can externally program the output LED current of the HV9925.The peak current control scheme provides good regulation of the output current throughout the universal AC line voltage range of 85 to 264VAC or DC input voltage of 20 to 400V.The HV9925 is designed with a built in thermal shutdown to prevent excessive power dissipation in the IC.
Programmable output current to 50mA
PWM dimming / enable
Universal 85 - 264VAC operation
Fixed off-time buck converter
Internal 475V power MOSFET
Over-temperature protection with hysteresis
HV9925 封裝圖
型號(hào) | 制造商 | 描述 | 購(gòu)買(mǎi) |
---|---|---|---|
HV9925SG-G | ATS | HEATSINK45X45X15MML-TAB | 立即購(gòu)買(mǎi) |
光博會(huì),又稱(chēng)中國(guó)國(guó)際光電博覽會(huì),深耕行業(yè)22載,集聚光電產(chǎn)業(yè)優(yōu)勢(shì)資源,2020年中國(guó)國(guó)際光電博覽會(huì)同期六展覆蓋信息通信、數(shù)據(jù)中心、激光、紅外、精密光學(xué)、鏡頭及模組、機(jī)器視覺(jué)、光電傳感等版塊,面向光通信、信息處理及存...
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