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LM3754 - Scalable 2-Phase Synchronous Buck Controllers

Download the LM3754 datasheet PDF. This datasheet also covers the LM3753 variant, as both devices belong to the same scalable 2-phase synchronous buck controllers family and are provided as variant models within a single manufacturer datasheet.

General Description

The LM3753 and LM3754 are full featured single-output dualphase voltage-mode synchronous PWM buck controllers.

They can be configured to control from 2 to 12 interleaved power stages creating a single high power output.

Key Features

  • Wide input voltage range of 4.5V to 18V.
  • Up to 12 channels for 300A load.
  • System accuracy better than 1%.
  • 0.6V to 3.6V output voltage range.
  • Switching frequency from 200 kHz to 1 MHz.
  • Phase current sharing ±12% max over temperature.
  • Integrated 4.35V ±2.3% LDO.
  • Inductor DCR or sense resistor current sensing.
  • Interleaved switching for low I/O ripple current.
  • Integrated synchronous NFET drivers.
  • Programmable Soft-Start (LM3754) or Tracking (L.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (LM3753-NationalSemiconductor.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
LM3754 LM3754 Scalable 2-Phase Synchronous Buck Controller w/ FET (Rev. B) ETCTI
LM3753 Scalable 2-Phase Synchronous Buck Controller Texas Instruments
LM3700 Microprocessor Supervisor Texas Instruments
LM3701 Microprocessor Supervisor Texas Instruments
LM3704 Voltage Supervisor Texas Instruments

Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
LM3753 Scalable 2-Phase Synchronous Buck Controllers
LM3700 Microprocessor Supervisor
LM3701 Microprocessor Supervisor
LM3702 Microprocessor Supervisor
LM3703 Microprocessor Supervisor

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
LM3753/54 Scalable 2-Phase Synchronous Buck Controllers with Integrated FET Drivers and Linear Regulator Controller LM3753/54 December 14, 2009 Scalable 2-Phase Synchronous Buck Controllers with Integrated FET Drivers and Linear Regulator Controller General Description The LM3753 and LM3754 are full featured single-output dualphase voltage-mode synchronous PWM buck controllers. They can be configured to control from 2 to 12 interleaved power stages creating a single high power output. Both controllers utilize voltage-mode control with input voltage feedforward for high noise immunity. An internal average current loop forces real time current sharing between phases during load transients. The LM3753 supports a Tracking function, while the LM3754 supports adjustable Soft-Start.