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UC3874-2 - Step-down (Buck) Controllers

Download the UC3874-2 datasheet PDF. This datasheet also covers the UC3874-1 variant, as both devices belong to the same step-down (buck) controllers family and are provided as variant models within a single manufacturer datasheet.

General Description

The UC3874 family of synchronous step-down (Buck) regulators provides high efficiency power conversion from an input voltage range of 4.5 to 36 volts.

Key Features

  • Operation to 36V Input Voltage.
  • Fixed Frequency Average Current Mode Control.
  • Standby Mode for Improved Efficiency at Light Load.
  • Drives External N-Channel MOSFETs for Highest Efficiency.
  • Sleep Mode Current < 50mA.
  • Complementary 1 Amp Outputs with Regulated Gate Drive Voltage.
  • LDO (Low Drop Out) Virtual 100% Duty Cycle Operation.
  • Non-Overlapping Gate Drives.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (UC3874-1-Unitrode.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number UC3874-2
Manufacturer Unitrode
File Size 392.03 KB
Description Step-down (Buck) Controllers
Datasheet download datasheet UC3874-2 Datasheet

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Other Datasheets by Unitrode

Part Number Description
UC3874-1 Step-down (Buck) Controllers
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UC3876 Phase Shift Resonant Controller

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.

View original datasheet text
UC1874-1,-2 UC2874-1,-2 UC3874-1,-2 High Efficiency, Synchronous, Step-down (Buck) Controllers FEATURES • Operation to 36V Input Voltage • Fixed Frequency Average Current Mode Control • Standby Mode for Improved Efficiency at Light Load • Drives External N-Channel MOSFETs for Highest Efficiency • Sleep Mode Current < 50mA • Complementary 1 Amp Outputs with Regulated Gate Drive Voltage • LDO (Low Drop Out) Virtual 100% Duty Cycle Operation • Non-Overlapping Gate Drives DESCRIPTION The UC3874 family of synchronous step-down (Buck) regulators provides high efficiency power conversion from an input voltage range of 4.5 to 36 volts.