SDH790XSC is designed for non-isolated LED driving with built-in high voltage power MOSFET and high voltage JFET. With this structure, MOSFET 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 due to its own PFC control. Boundary Conduction mode is adopted for decreasing switching loss and improving the conversion efficiency.
SDH790XSC can realize high power factor without any external integral capacitor.
Peripheral VCC pin and VCC capacitor (to GND) are unnecessary.
SDH790XSC integrates various protections, such as output open circuit protection, output short circuit protection, cycle-by-cycle over current protection, and over temperature protection.
SDH790XSC has ultra low start-up current and operating current, is able to high effectively drive highlight LED in full voltage input range.
Proprietary constant control method (Patent)
High power factor without any external compensation capacitor (Patent)
Built-in single harmonic optimization
Built-in high-voltage power supply
No peripheral VCC pin and VCC capacitor
Built-in high voltage power MOSFET and high voltage JFET
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
Over current protection
Internal current reduction in high temperature condition
| Product Name | Package form | Marking | Hazardous Substance Control | Packing Type | Remarks |
|---|---|---|---|---|---|
| SDH7901SC | SOP-7-225-1.27 | / | Halogen free | Tube | |
| SDH7901SCTR | SOP-7-225-1.27 | / | Halogen free | Tape & Reel | |
| SDH7902SC | SOP-7-225-1.27 | / | Halogen free | Tube | |
| SDH7902SCTR | SOP-7-225-1.27 | / | Halogen free | Tape & Reel | |
| SDH7903SC | SOP-7-225-1.27 | / | Halogen free | Tube | |
| SDH7903SCTR | SOP-7-225-1.27 | / | Halogen free | Tape & Reel | |
| SDH7904ASC | SOP-7-225-1.27 | / | Halogen free | Tube | |
| SDH7904ASCTR | SOP-7-225-1.27 | / | Halogen free | Tape & Reel | |
| SDH7904SC | SOP-7-225-1.27 | / | Halogen free | Tube | |
| SDH7904SCTR | SOP-7-225-1.27 | / | Halogen free | Tape & Reel |
