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The SDH771XN is a high accuracy LED constant current driver IC, it is applicable to non-isolated buck LED constant current power system with full AC input voltage range of 85VAC~265VAC.

The SDH771XN integrates high-voltage power supply circuit, it is able to supply power to itself without any startup resistor and auxiliary winding, and at the same time, a conventional external power supply capacitor is omitted, which greatly shortens the startup time as well as saves the system cost. The SDH771XN works in inductor current boundary conduction mode, it uses a unique high-accuracy current sense technology, combined with internal compensation, can achieve high constant current accuracy and excellent line/load regulation.

The SDH771XN provides various protections, such as output short/open circuit protection, cycle-by-cycle over current protection, over temperature regulation, and open circuit protection for sensing resistor, which greatly improves the system safety and reliability. The open-circuit protection voltage can be set externally through the ROVP pin.

Main feature

Available 500V high voltage power MOSFET in one package with stable performance
Integrated high-voltage power supply, without the need of startup resistor and VCC capacitor
Accurate constant current threshold (<±3%)
Output short/open circuit protection
Open circuit protection threshold value external adjusted
Over temperature regulation
Cycle-by-cycle over current protection
No auxiliary winding

Ordering Information

Product Name	Package form	Marking	Hazardous Substance Control	Packing Type
SDH7711SN	SOP-7-225-1.27	/	Halogen free	Tube
SDH7711SNTR	SOP-7-225-1.27	/	Halogen free	Tape&Reel
SDH7712SN	SOP-7-225-1.27	/	Halogen free	Tube
SDH7712SNTR	SOP-7-225-1.27	/	Halogen free	Tape&Reel
SDH7712DN	DIP-8A-300-2.54	/	Halogen free	Tube
SDH7713SN	SOP-7-225-1.27	/	Halogen free	Tube
SDH7713SNTR	SOP-7-225-1.27	/	Halogen free	Tape&Reel
SDH7713DN	DIP-8A-300-2.54	/	Halogen free	Tube
SDH7714SN	SOP-7-225-1.27	/	Halogen free	Tube
SDH7714DN	DIP-8A-300-2.54	/	Halogen free	Tube
SDH7714SNTR	SOP-7-225-1.27	/	Halogen free	Tape&Reel

Block Diagram

SDH771XN 英文.png

Documents

title	Types of	Size (KB)	date	Download the latest English version
SDH771XN		0	2022-01-19	SDH771XN Brief Datasheet

Packages

DIP-8A-300-2.54

SOP-7-225-1.27

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