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BP9938D - Non-isolated Buck Offline LED Driver

This page provides the datasheet information for the BP9938D, a member of the BP9938C Non-isolated Buck Offline LED Driver family.

Description

BP9938X is a high precision Buck constant current LED driver.

The device operates in critical conduction mode and is suitable for 85Vac~265Vac universal input offline LED lighting.

The BP9938X integrates a 500V power MOSFET.

Features

  • No VCC Capacitor and Startup Resistor.
  • Internal 500V Power MOSFET.
  • Integrated HV JFET for IC Power Supply.
  • No Auxiliary Winding.
  • Critical Conduction Mode Operation.
  • ±5% LED Output Current Accuracy.
  • LED Short Protection.
  • VCC Under Voltage Protection.
  • Thermal Regulation Function.
  • Available in SOT33-4 Package.

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Datasheet preview – BP9938D

Datasheet Details

Part number BP9938D
Manufacturer BPS
File Size 186.07 KB
Description Non-isolated Buck Offline LED Driver
Datasheet download datasheet BP9938D Datasheet
Additional preview pages of the BP9938D datasheet.

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  • BP9912A - Non-isolated Buck Constant Current LED Driver

Full PDF Text Transcription

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BP9938X Non-isolated Buck Offline LED Driver Description BP9938X is a high precision Buck constant current LED driver. The device operates in critical conduction mode and is suitable for 85Vac~265Vac universal input offline LED lighting. The BP9938X integrates a 500V power MOSFET. With proprietary MOSFET driving technique. It doesn’t need VCC capacitor and startup resistor. It can achieve excellent constant current performance with very few external components, so the system cost and size are minimized. BP9938X utilizes proprietary current control method. It can achieve precise output current and excellent line regulation. The driver operates in critical conduction mode, the output current does not change with the inductance and output voltage.
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