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SDH790XSLN 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.

SDH790XSLN 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.

SDH790XSLN integrates various protections, such as output open circuit protection, output short circuit protection, cycle-by-cycle over current protection, and over temperature protection.

SDH790XSLN 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
SDH7901ASLN	SOP-7-225-1.27	/	Halogen Free	Tube
SDH7901ASLNTR	SOP-7-225-1.27	/	Halogen free	Tape & Reel
SDH7901SLN	SOP-7-225-1.27	/	Halogen free	Tube
SDH7901SLNTR	SOP-7-225-1.27	/	Halogen free	Tape & Reel
SDH7902SLN	SOP-7-225-1.27	/	Halogen Free	Tube
SDH7902SLNTR	SOP-7-225-1.27	/	Halogen free	Tape & Reel
SDH7903SLN	SOP-7-225-1.27	/	Halogen Free	Tube
SDH7903SLNTR	SOP-7-225-1.27	/	Halogen Free	Tape & Reel
SDH7904ASLN	SOP-7-225-1.27	/	Halogen Free	Tube
SDH7904ASLNTR	SOP-7-225-1.27	/	Halogen Free	Tape & Reel
SDH7904SLN	SOP-7-225-1.27	/	Halogen Free	Tube
SDH7904SLNTR	SOP-7-225-1.27	/	Halogen Free	Tape & Reel

Block Diagram

Documents

title	Types of	Size (KB)	date	Download the latest English version
SDH790XSLN		0	2022-06-20	SDH790XSLN Brief Datasheet

Packages

SOP-7-225-1.27

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