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Evaluation board for the PM6675S high efficiency step-down controller with embedded 2 A LDO regulator
  • active Active

The STEVAL-ISA052V1 demonstration board is based on the PM6675S device which consists of a single high efficiency step-down controller and an independent low drop-out (LDO) linear regulator.

The constant on-time (COT) architecture assures fast transient response supporting both electrolytic and ceramic output capacitors. An embedded integrator control loop compensates the DC voltage error due to the output ripple.

Selectable low-consumption mode allows the highest efficiency over a wide range of load conditions. The low-noise mode sets the minimum switching frequency to 33 kHz for audio-sensitive applications. The LDO linear regulator can sink and source up to 2 Apk. Two fixed current limits (±1 A and ±2 A) can be chosen.

An active soft-end is independently performed on both the switching and the linear regulator outputs when disabled.

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Data Brief

Key Features

  • 4.5 V to 28 V input voltage range
  • 0.6 V, ±1 % voltage reference
  • 1.5 V fixed output voltage
  • 0.6 V to 3.3 V adjustable output voltage
  • 1.237 V ±1 % reference voltage available
  • Very fast load transient response constant on-time loop control
  • No-RSENSE current sensing using low-side MOSFETs’ RDS(on)
  • Negative current limit
  • Latched OVP, UVP and thermal shutdown
  • Fixed 3 ms soft-start
  • Selectable pulse-skipping at light load
  • Selectable no-audible (33 kHz) pulse-skip mode
  • All ceramic output capacitors application supported
  • Output voltage ripple compensation
  • Output soft-end
  • RoHS compliant


Design Resources


Technical Documentation

Product Specifications

Description Version Size
DB1175: High efficiency step-down controller with embedded 2 A LDO regulator demonstration board based on the PM6675S
1.1 118 KB

Hardware Resources

Board Manufacturing Specification

Description Version Size
Gerber files for STEVAL-ISA052V1 board
1.0 1,507 KB

Bill of Materials

Description Version Size
BOM for STEVAL-ISA052V1 board
1.0 57 KB

Schematic Pack

Description Version Size
Board schematics for STEVAL-ISA052V1 board
1.0 32 KB

Sample & Buy

Part Number Marketing StatusCore ProductOrder From STUnit Price (US$)*
@ 1
Distributor AvailabilityRoHS Compliance GradeDownload
Material Declaration**
STEVAL-ISA052V1ActivePM6675SBuy Direct90.65Distributor reported inventory date: 2016-02-04
Distributor NameRegionStockMin. order

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
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