The SDH698XS is designed for non-isolated LED driving with floating Buck topology, built-in HV power MOSFET and depletion mode MOSFET are available. With this topology, 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.
The SDH698XS is able to realize high power factor without any peripheral integral capacitor.
Furthermore, SDH698XS 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 volume.
SDH698XS integrates various protections, such as output open circuit protection, output short circuit protection, cycle-by-cycle over current protection, and over temperature protection.
The start-up current and operating current are low and highlight LED can be driven with high efficiency in full range.
Proprietary constant control method (Patent)
High power factor without any peripheral integral 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 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
Product Name | Package form | Marking | Hazardous Substance Control | Packing Type | Remarks |
---|---|---|---|---|---|
SDH6981S | SOP-7-225-1.27 | / | Halogen free | Tube | |
SDH6981STR | SOP-7-225-1.27 | / | Halogen free | Tape & Reel | |
SDH6981SC | SOP-7-225-1.27 | / | Halogen free | Tube | |
SDH6981SCTR | SOP-7-225-1.27 | / | Halogen free | Tape & Reel | |
SDH6982S | SOP-7-225-1.27 | / | Halogen free | Tube | |
SDH6982STR | SOP-7-225-1.27 | / | Halogen free | Tape&Reel | |
SDH6983S | SOP-7-225-1.27 | / | Halogen free | Tube | |
SDH6983STR | SOP-7-225-1.27 | / | Halogen free | Tape&Reel |
title | Types of | Size (KB) | date | Download the latest English version |
---|---|---|---|---|
SDH698XS | 0 | 1970-01-01 | SDH698XS Brief Datasheet |