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SD4938 - 150V CURRENT MODE PWM CONTROLLER

General Description

SD4938 is a current mode PWM controller with 150V MOSFET used for SMPS.

SD4938 integrates high-voltage start-up circuit.

Key Features

  • various protections, including VDD undervoltage protection, VDD overvoltage protection, lead edge blanking, over current protection, over temperature protection, etc. Meanwhile, if any protection occurs, the circuit will continue to restart automatically until the system recovers. SOP-8-225-1.27.

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Datasheet Details

Part number SD4938
Manufacturer Silan
File Size 216.86 KB
Description 150V CURRENT MODE PWM CONTROLLER
Datasheet download datasheet SD4938 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Silan Microelectronics SD4938_Datasheet 150V CURRENT MODE PWM CONTROLLER DESCRIPTION SD4938 is a current mode PWM controller with 150V MOSFET used for SMPS. SD4938 integrates high-voltage start-up circuit. It enters burst mode at light load to reduce the system standby power dissipation; the frequency reduction function optimizes the conversion efficiency at light load; the soft startup function reduces the stress of device to avoid transformer saturation. SD4938 features various protections, including VDD undervoltage protection, VDD overvoltage protection, lead edge blanking, over current protection, over temperature protection, etc. Meanwhile, if any protection occurs, the circuit will continue to restart automatically until the system recovers. SOP-8-225-1.