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The SDH771XL 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 SDH771XL integrates a built-in high-voltage power circuit, it is able to supply power to itself without any startup resistor or 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 SDH771XL 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 SDH771XL provides various protections, such as output short 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.

Main feature

Built-in 500V high voltage power MOSFET
Integrated high-voltage power supply, without the need of startup resistor and VCC capacitor
Accurate constant current threshold(<±3%)
Output short circuit protection
Over temperature regulation
Over temperature protection
Cycle-by-cycle over current protection
No auxiliary winding

Ordering Information

Product Name	Package form	Marking	Hazardous Substance Control	Packing Type
SDH7711CSL	SOP-7-225-1.27	/	Halogen free	Tube
SDH7711CSLTR	SOP-7-225-1.27	/	Halogen free	Tape&Reel
SDH7711BSL	SOP-7-225-1.27	/	Halogen free	Tube
SDH7711BSLTR	SOP-7-225-1.27	/	Halogen free	Tape&Reel
SDH7711ASL	SOP-7-225-1.27	/	Halogen free	Tube
SDH7711ASLTR	SOP-7-225-1.27	/	Halogen free	Tape&Reel
SDH7711SL	SOP-7-225-1.27	/	Halogen free	Tube
SDH7711SLTR	SOP-7-225-1.27	/	Halogen free	Tape&Reel
SDH7712SL	SOP-7-225-1.27	/	Halogen free	Tube
SDH7712SLTR	SOP-7-225-1.27	/	Halogen free	Tape&Reel
SDH7712DL	DIP-8A-300-2.54	/	Halogen free	Tube

Block Diagram

SDH771XL 英文.png

Documents

title	Types of	Size (KB)	date	Download the latest English version
SDH771XL		0	2022-01-26	SDH771XL Datasheet

Packages

DIP-8A-300-2.54

SOP-7-225-1.27

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