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LM2854 Datasheet 4-a 500-khz / 1-mhz Synchronous Buck Regulator

Manufacturer: Texas Instruments

Overview: Product Folder Order Now Technical Documents Tools & Software Support & Community LM2854 SNVS560E – MARCH 2008 – REVISED OCTOBER 2017 LM2854 4-A 500-kHz / 1-MHz Synchronous Buck Regulator.

General Description

The LM2854 PowerWise™ buck regulator is a 500kHz or 1-MHz step-down switching voltage regulator capable of driving up to a 4-A load with exceptional power conversion efficiency, line and load regulation, and output accuracy.

The LM2854 can accept an input voltage rail between 2.95 V and 5.5 V, and deliver an adjustable and highly accurate output voltage as low as 0.8 V.

Externally established softstart with a small capacitor facilitates controlled startup, and the LM2854 is capable of starting gracefully into a pre-biased output voltage.

Key Features

  • 1 Input Voltage Range of 2.95 V to 5.5 V.
  • Maximum Load Current of 4 A.
  • Wide Bandwidth Voltage Mode Control Loop, Partial Internal Compensation.
  • Fixed Switching Frequency of 500 kHz or 1 MHz.
  • 35-mΩ Integrated MOSFET Switches.
  • Adjustable Output Voltage Down to 0.8 V.
  • Optimized Reference Voltage Initial Accuracy and Temperature Drift.
  • External Soft-Start Control With Tracking Capability.
  • Enable Pin With Hysteresis.

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