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SDH6984RC is designed for non-isolated LED driving with floating Buck topology, built-in HV power MOSFET and depletion mode MOSFET are available. 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 as its own PFC control. Boundary Conduction mode is adopted for decreasing switching loss and improving the conversion efficiency.

SDH6984RC can realize high power factor without any external integral capacitor.

Furthermore, SDH6984RC has a built-in VCC regulator and a high-voltage power supply controller, which is able to supply power to VCC capacitor in a certain VCC range without any peripheral power supply or HV startup circuit, saving the system cost and area.

SDH6984RC integrates various protections, such as output open circuit protection, output short circuit protection, cycle-by-cycle over current protection, and over temperature protection.

SDH6984RC 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
Built-in VCC regulator
Built-in HV power MOSFET and depletion mode MOSFET
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
VCC under voltage protection
Over temperature protection
Over current protection
Internal current reduction in high temperature condition

Ordering Information

Product Name	Package form	Marking	Hazardous Substance Control	Packing Type	Remarks
SDH6984RC	SOP-8-225-1.27	69	Halogen free	Tube
SDH6984RCTR	SOP-8-225-1.27	69	Halogen free	Tape&Reel

Block Diagram

繪圖1.gif

Documents

title	Types of	Size (KB)	date	Download the latest English version
SDH6984RC		0	2024-08-30	SDH6984RC Brief Datasheet

Packages

SOP-8-225-1.27

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