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SDH792XS 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.

SDH792XS 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, and ENABLE is available.

SDH792XS integrates various protections, such as output open circuit protection, output short circuit protection, cycle-by-cycle over current protection, and over temperature protection.

SDH792XS 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>0.7 in full voltage input range
Boundary-Conduction mode
LED short circuit protection
LED open circuit protection
Over temperature protection
Over current protection
Internal current reduction in high temperature condition
Low output ripple voltage

Ordering Information

Product Name	Package form	Marking	Hazardous Substance Control	Packing Type
SDH7921AS	SOP-7-225-1.27	7921AS	Halogen free	Tube
SDH7921ASTR	SOP-7-225-1.27	7921AS	Halogen free	Tape & reel
SDH7921S	SOP-7-225-1.27	SDH7921S	Halogen free	Tube
SDH7921STR	SOP-7-225-1.27	SDH7921S	Halogen free	Tape & reel
SDH7922S	SOP-7-225-1.27	SDH7922S	Halogen free	Tube
SDH7922STR	SOP-7-225-1.27	SDH7922S	Halogen free	Tape & reel
SDH7923S	SOP-7-225-1.27	SDH7923S	Halogen free	Tube
SDH7923STR	SOP-7-225-1.27	SDH7923S	Halogen free	Tape & reel
SDH7924S	SOP-7-225-1.27	SDH7924S	Halogen free	Tube
SDH7924STR	SOP-7-225-1.27	SDH7924S	Halogen free	Tape & reel

Block Diagram

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Documents

title	Types of	Size (KB)	date	Download the latest English version
SDH792XS 說明書		0	1970-01-01	SDH792XS 說明書_1.1

Packages

SOP-7-225-1.27

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