Használati útmutató Microchip HV9922

Olvassa el alább 📖 a magyar nyelvű használati útmutatót Microchip HV9922 (19 oldal) a nincs kategorizálva kategóriában. Ezt az útmutatót 3 ember találta hasznosnak és 2 felhasználó értékelte átlagosan 4.5 csillagra

Oldal 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
HV9921/HV9922/HV9923
DS20005311A-page 2 2014 Microchip Technology Inc.
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The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000).
Errata
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devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision
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2014 Microchip Technology Inc. DS20005311A-page 3
HV9921/HV9922/HV9923
PIN DIAGRAM
TYPICAL APPLICATION CIRCUIT
1
2
31 2 3
TO-92TO-243AA
(SOT-89)
See Table 2-1 for Pin information.
HV9921/22/23
LED1
-
LEDn
3 VDD DRAIN 1
GND
2
AC

Termékspecifikációk

Márka: Microchip
Kategória: nincs kategorizálva
Modell: HV9922

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