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4A 500 kHz / 1 MHz Synchronous Buck Regulator


Package | PIN: PWP | 16
Temp: I (-40 to 85)
Carrier: Partial Tube
Qty Price
1-9 $5.06
10-24 $4.55
25-99 $4.25
100-249 $3.81
250-499 $3.56
500-749 $3.10
750-999 $2.68
1000+ $2.63


  • 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
  • Low Standby Current of 230 µA
  • Pre-Biased Load Start-up Capability
  • Integrated UVLO, OCP, and Thermal Shutdown
  • 100% Duty Cycle Capability
  • HTSSOP-16 Exposed Pad Package

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Texas Instruments  LM2854MH-500/NOPB

The LM2854 PowerWise™ buck regulatoris a 500-kHz or 1-MHz step-down switching voltage regulator capable of driving up to a 4-A loadwith exceptional power conversion efficiency, line and load regulation, and output accuracy. TheLM2854 can accept an input voltage rail between 2.95 V and 5.5 V, and deliver an adjustable andhighly accurate output voltage as low as 0.8 V. Externally established soft-start with a smallcapacitor facilitates controlled start-up, and the LM2854 is capable of starting gracefully into apre-biased output voltage. Partial internal compensation reduces the number of external passivecomponents and PC board space typically necessary in a voltage mode buck converter application, yetpreserving flexibility to deal with ceramic and/or electrolytic based load capacitors. Losslesscycle-by-cycle peak current limit is used to protect the load from an overcurrent or short-circuitfault, and an enable comparator simplifies sequencing applications. The LM2854 is available in anexposed pad HTSSOP-16 package that enhances the thermal performance of the regulator.