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SDH790XSN is designed for non-isolated LED driving with built-in high voltage power MOSFET and high voltage JFET. With this structure, inductor current is sensed and closed-loop is formed with the internal error amplifier for high constant current accuracy and high input/output regulation rate. Also, high PF in full range is available due to its own PFC control. Boundary Conduction mode is adopted for decreasing switching loss and improving the conversion efficiency.

SDH790XSN can realize high power factor without any external integral capacitor.

Peripheral VCC pin and VCC capacitor (to GND) are unnecessary.

Over voltage protection threshold value is set through pin ROVP.

SDH790XSN integrates various protections, such as output open circuit protection, output short circuit protection, cycle-by-cycle over current protection, and over temperature protection.

SDH790XSN has ultra low start-up current and operating current, is able to high effectively drive highlight LED in full voltage input range.

Main feature

Proprietary constant control method (Patent)
High power factor without any external compensation capacitor (Patent)
Built-in high-voltage power supply
No peripheral VCC pin and VCC capacitor
Built-in high voltage power MOSFET and high voltage JFET
Constant current with high accuracy for LED (≤±3%)
PF>0.9 in full voltage input range
Boundary-Conduction mode
LED short circuit protection
LED open circuit protection
Over current protection
Internal current reduction in high temperature condition

Ordering Information

Product Name	Package form	Marking	Hazardous Substance Control	Packing Type
SDH7902SN	SOP-7-225-1.27	7902SN	Halogen free	Tube
SDH7902SNTR	SOP-7-225-1.27	7902SN	Halogen free	Tape&Reel
SDH7904SN	SOP-7-225-1.27	7904SN	Halogen free	Tube
SDH7904SNTR	SOP-7-225-1.27	7904SN	Halogen free	Tape&Reel
SDH7905SN	SOP-7-225-1.27	7905SN	Halogen free	Tube
SDH7905SNTR	SOP-7-225-1.27	7905SN	Halogen free	Tape&Reel

Block Diagram

SDH790XSN 英文（9000&3450）.png

Documents

title	Types of	Size (KB)	date	Download the latest English version
SDH790XSN		0	2023-06-13	SDH790XSN Brief Datasheet

Packages

SOP-7-225-1.27

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