SDH8634 is current mode PWM+PFM controller used for SMPS, with built-in high voltage MOSFET, high-voltage startup function, and external sensing resistor.
SDH8634 has high-voltage startup function to achieve low standby power dissipation (<30mW) and multi-mode control. At heavy load condition, it works at PWM mode. At light load condition, it works at PFM mode to improve efficiency. At no load condition, it works at burst mode to reduce the standby power dissipation.
SDH8634 has switching frequency jitter function to improve EMI performance.
SDH8634 integrates complete protections including leading edge blanking (LEB),cycle-by-cycle current limit, VCC overvoltage protection(OVP), output overload protection(OLP)and over-temperature protection(OTP) etc.
SDH8634 supports applications up to 18W.
High-voltage startup
Low standby power dissipation
Multi-mode control
Switching frequency jitter
Peak current compensation
Soft startup
Leading edge blanking(LEB)
Cycle-by-cycle current limit
VCC overvoltage protection(OVP)
Output overload protection(OLP)
Over-temperature protection(OTP)
Up to 18W
Product Name | Package form | Marking | Hazardous Substance Control | Packing Type | Remarks |
---|---|---|---|---|---|
SDH8634 | DIP-8-300-2.54 | SDH8634 | Halogen free | Tube |
title | Types of | Size (KB) | date | Download the latest English version |
---|---|---|---|---|
SDH8634 | 0 | 1970-01-01 | SDH8634 Brief Datasheet |