HM9923PR datasheet(4/6 Pages) HMSEMI

Teilenummer	HM9923PR

Bauteilbeschribung	High-Voltage LED DRriver with Build-In MOSFET Switch

PDF	6 Pages

Scroll/Zoom	100%

Hersteller	HMSEMI [Shenzhen Huazhimei Semiconductor Co., Ltd]

Direct Link	http://www.hmsemi.com/

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4 / 6 page

RECOMMENDED APPLICATION DIAGRAM

AC – AC supply voltage source

С1 – capacitor C= 0.1uF ± 10 %

D1 – microcircuit

L1 – inductor (coil)

Inductor feature L, mH, is calculated by formula:

L =

15 



N – Quantity of diodes in LED string, pcs.;

VF – LED forward voltage for nominal current, V;

dIO – LED circuit permissible current ripple, mA

LED1 – LEDN – LEDs (light emitting diodes) with nominal current:

- 20 mA for HM9921 application;

- 50 mA for HM9922 application;

- 30 mA for HM9923 application

VD1 – high-voltage diode with breakdown voltage not less 500V

and forward current:

- not less 25.5 mA for HM9921 application;

- not less 63.0 mA for HM9922 application;

- not less 38.2 mA for HM9923 application

Shenzhen H&M Semiconductor Co.Ltd

http：//www.hmsemi.com

HM9923PR Datenblatt(PDF) 4 Page - Shenzhen Huazhimei Semiconductor Co., Ltd