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SDH790XSCN is designed for non-isolated LED driving with built-in high voltage power MOSFET and high voltage JFET. With this structure, MOSFET 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.

SDH790XSCN can realize high power factor without any external integral capacitor.

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

SDH790XSCN integrates various protections, such as output open circuit protection, output short circuit protection, cycle-by-cycle over current protection, and over temperature protection.

SDH790XSCN 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 single harmonic optimization
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
SDH7901SCN	SOP-7-225-1.27	/	Halogen free	Tube
SDH7901SCNTR	SOP-7-225-1.27	/	Halogen free	Tape & Reel
SDH7902SCN	SOP-7-225-1.27	/	Halogen free	Tube
SDH7902SCNTR	SOP-7-225-1.27	/	Halogen free	Tape & Reel
SDH7903SCN	SOP-7-225-1.27	/	Halogen free	Tube
SDH7903SCNTR	SOP-7-225-1.27	/	Halogen free	Tape & Reel
SDH7904ASCN	SOP-7-225-1.27	/	Halogen free	Tube
SDH7904ASCNTR	SOP-7-225-1.27	/	Halogen free	Tape & Reel
SDH7904SCN	SOP-7-225-1.27	/	Halogen free	Tube
SDH7904SCNTR	SOP-7-225-1.27	/	Halogen free	Tape & Reel

Block Diagram

Documents

title	Types of	Size (KB)	date	Download the latest English version
SDH790XSCN		0	2022-06-17	SDH790XSCN Brief Datasheet

Packages

SOP-7-225-1.27

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