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SD4870C - CURRENT MODE PWM CONTROLLER

This page provides the datasheet information for the SD4870C, a member of the SD4870A CURRENT MODE PWM CONTROLLER family.

Description

SD4870 is a current mode PWM controller IC for high performance, low standby power offline flyback converter application.

In no load or light load condition, the IC operates in Light Load Mode to reduce switching loss and improve efficiency.

Features

  • Frequency shuffling to improve EMI performance.
  • Light Load Mode for minimum standby power.
  • External programmable switching frequency.
  • 3uA low startup current.
  • Internal LEB circuit.
  • VDD over voltage and under voltage protection.
  • Gate output maximum voltage clamp.
  • Over current protection.
  • Over load protection www. DataSheet4U. com.
  • SOT-23-6L/SOP8/DIP8 package.

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Datasheet preview – SD4870C

Datasheet Details

Part number SD4870C
Manufacturer Silan Microelectronics
File Size 398.68 KB
Description CURRENT MODE PWM CONTROLLER
Datasheet download datasheet SD4870C Datasheet
Additional preview pages of the SD4870C datasheet.

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Full PDF Text Transcription

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CURRENT MODE PWM CONTROLLER DESCRIPTION SD4870 is a current mode PWM controller IC for high performance, low standby power offline flyback converter application. In no load or light load condition, the IC operates in Light Load Mode to reduce switching loss and improve efficiency. Large value startup resistor could be used in the startup circuit to minimize the standby current because of low startup current. SD4870 offers complete protection functions including cycle-bycycle over current protection, over load protection, VDD input voltage over voltage and under voltage protection, etc. Excellent EMI performance is achieved with frequency shuffling technique and soft switching control at the totem pole gate driver output. DIP-8-300-2.54 SOP-8-225-1.
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