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The SDH771XG is a high- precision 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.

SDH771XG has built-in high-voltage power supply circuit, which can realize the independent power supply of the IC without startup resistor and auxiliary winding. At the same time, the conventional external power supply capacitor is omitted, which greatly saves system cost while speeding up system startup.

The SDH771XG works in inductor current boundary conduction mode, it uses a unique high-precision current sense technology, combined with internal compensation to achieve high constant current accuracy and excellent line/load regulation.

The SDH771XG 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 safety and reliability of the system.

Main feature
  •  Built-in 500V high voltage power MOSFET

  •   Integrated high-voltage power supply, no external capacitor required

  • Accurate constant current (<±3%) for LED

  • Output short circuit protection

  • Cycle-by-cycle over current protection 

  • No auxiliary winding

Ordering Information
Product Name Package form Marking Hazardous Substance Control Packing Type Remarks
SDH7711ASG SOP-7-225-1.27 A1 Halogen free Tube
SDH7711ASGTR SOP-7-225-1.27 A1 Halogen free Tape&Reel
SDH7711SG SOP-7-225-1.27 SG Halogen free Tube
SDH7711SGTR SOP-7-225-1.27 SG Halogen free Tape&Reel
SDH7712SG SOP-7-225-1.27 2G Halogen free Tube
SDH7712SGTR SOP-7-225-1.27 2G Halogen free Tape&Reel
SDH7713SG SOP-7-225-1.27 3G Halogen free Tube
SDH7713SGTR SOP-7-225-1.27 3G Halogen free Tape&Reel
Block Diagram