Microchip
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HV9923
Microchip HV9923 Handleiding
Hier is de Microchip HV9923 (Niet gecategoriseerd) gebruikershandleiding. 19 pagina's in taal Engels met een gewicht van 2.1 Mb. Als u geen antwoorden op uw probleem kunt vinden Vraag het onze community.
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2014 Microchip Technology Inc. DS20005311A-page 1
HV9921/HV9922/HV9923
Features
• Constant output current:
- HV9921 – 20mA
- HV9922 – 50mA
- HV9923 – 30mA
• Universal 85 - 264VAC operation
• Fixed off-time buck converter
• Internal 475V power MOSFET
Applications
• Decorative lighting
• Low power lighting fixtures
Description
HV9921/HV9922/HV9923 are pulse-width modulated
(PWM), high-efficiency, LED driver control ICs. They
allow efficient operation of LED strings from voltage
sources ranging up to 400VDC. HV9921/22/23 include
an internal high voltage switching MOSFET controlled
with fixed off-time (TOFF) of approximately 10μs. The
LED string is driven at constant current, thus providing
constant light output and enhanced reliability. The out-
put current is internally fixed at 20mA for HV9921,
50mA for HV992, and 30mA for HV9923. The peak cur-
rent 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.
3-Pin Switch-Mode LED Lamp Driver ICs
Probleemoplossing Microchip HV9923
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Specificaties
| Merk: | Microchip |
| Categorie: | Niet gecategoriseerd |
| Model: | HV9923 |