Microchip HV9922 Manual


Læs gratis den danske manual til Microchip HV9922 (19 sider) i kategorien Ikke kategoriseret. Denne vejledning er vurderet som hjælpsom af 21 personer og har en gennemsnitlig bedømmelse på 4.9 stjerner ud af 11 anmeldelser. Har du et spørgsmål om Microchip HV9922, eller vil du spørge andre brugere om produktet?

Side 1/19
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


Produkt Specifikationer

Mærke: Microchip
Kategori: Ikke kategoriseret
Model: HV9922

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