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A buck or step-down topology is used in DC-DC switching converters where the output voltage is lower than the input with or without input-output isolation.

We have a large offer of buck regulators - with integrated power switches – and multi-phase, single-phase, multi-output controllers providing a wide range of features including soft start to minimize inrush current and power-good to enable power-up sequencing. Programmable devices are also available to help design buck converters fine-tuned for specific EMI, EMC, efficiency and power density targets and use cases.

We have also developed an isolated, single-stage direct 48 V to the Point-of-Load (PoL) resonant, conversion solution for use in CPUs or DDR memories compliant with Intel VR13 and VR12.5 specifications. ST also offers a fully scalable solution for up to 6 interleaved cells with dynamic cell shedding and pulse skipping features.

In addition, we have a comprehensive set of evaluation and development tools as well as reference designs to help compress time to market.

Buck converter circuit diagrams

Part Number
Description
STEVAL-1PS01AJR Evaluation board based on ST1PS01AJR 400 mA nano-quiescent synchronous step-down converter Quick view

Key Features

  • 1.8 V to 5.5 V input operating range
  • Up to 400 mA output current capability
  • Tiny external components: L=2.2 µH typ.
  • Selectable output voltages: 1.9 V to 2.8 V
  • Output voltage Power Good
  • Dynamic output voltage selection (D0, D1)
  • Suitable for the following applications:
    • Wearable applications
    • Personal tracking monitors
    • Smart watches, sport bands
    • Energy harvesting, wireless sensors
    • Wearable and fitness accessories
    • Industrial sensors, portable low power devices
    • Single cell Li-Ion battery applications
    • Bluetooth® low energy
    • Zigbee
  • WEEE and RoHS compliant (hardware only)

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STEVAL-1PS01EJR Evaluation board based on the ST1PS01EJR 400 mA nano-quiescent synchronous step-down converter Quick view

Key Features

  • 94% typical efficiency at 1 mA load (VIN =3.6 V, VOUT =3.3 V)
  • 1.8 V to 5.5 V input operating range
  • Up to 400 mA output current capability
  • Tiny external components: L=2.2 µH typ.
  • Selectable output voltages: 1.8 V to 3.3 V
  • Output voltage Power Good
  • Dynamic output voltage selection (D0, D1)
  • Suitable for the following applications:
    • Wearable applications
    • Personal tracking monitors
    • Smart watches, sport bands
    • Energy harvesting, wireless sensors
    • Wearable and fitness accessories
    • Industrial sensors, portable low power devices
    • Single cell Li-Ion battery applications
    • Bluetooth® low energy
    • ZigBee®
  • Hardware is WEEE and RoHS compliant

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STEVAL-1PS01DJR Evaluation board based on ST1PS01DJR 400 mA nano-quiescent synchronous step-down converter Quick view

Key Features

  • 1.8 V to 5.5 V input operating range
  • Up to 400 mA output current capability
  • Tiny external components: L=2.2 µH typ
  • Selectable output voltages: 1.8 V to 2.8 V
  • Output voltage Power Good
  • Dynamic output voltage selection (D0, D1)
  • Suitable for the following applications:
    • Wearable applications
    • Personal tracking monitors
    • Smart watches, sport bands
    • Energy harvesting, wireless sensors
    • Wearable and fitness accessories
    • Industrial sensors, portable low power devices
    • Single cell Li-Ion battery applications
    • Bluetooth® low energy
    • ZigBee®
  • WEEE and RoHS compliant (hardware only)

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STEVAL-ISA152V1 3.3 V/3 A high efficiency step down DC-DC converter (VIN= 4.5 to 60 V) based on the L7987 Quick view

Key Features

  • 3.3 V output voltage
  • 3 A DC output current
  • 4.5 V to 60 V input voltage
  • 500 kHz switching frequency
  • 3.5 ms programmed soft-start
  • VBIAS switch-over for improved efficiency at light load
  • 180° out of phase synchronization available
  • Open drain PGOOD available
  • Auto recovery overcurrent and thermal protection
  • RoHS compliant

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STEVAL-ISA158V1 38 V - 2 A synchronous step-down switching regulator evaluation board based on the A6986 Quick view

Key Features

  • 4 V to 38 V operating input voltage
  • Low consumption mode or low noise mode
  • 30 µA IQ at light load (LCM VOUT = 3.3 V)
  • 5 µA IQ-SHTDWN
  • Adjustable fSW (250 kHz - 2 MHz)
  • Output voltage adjustable from 0.85 V to VIN
  • Embedded output voltage supervisor
  • Synchronization
  • Adjustable soft-start time
  • Internal current limiting
  • Overvoltage protection
  • Output voltage sequencing
  • Peak current mode architecture
  • RDS(on)HS = 180 mΩ; RDS(on)LS = 150 mΩ
  • Thermal shutdown
  • RoHS compliant

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STEVAL-ISA207V1 3 A step down DC/DC switching regulator (VIN = 4.5 V to 60 V) based on the A7987 Quick view

Key Features

  • 4.5 V to 60 V input voltage
  • Step-down (buck) conversion
  • 3.3 V output voltage
  • Up to 3 A DC output current
  • 500 kHz switching frequency
  • 3.5 ms programmed soft-start
  • Compliant with ceramic output capacitors
  • 180° out-of-phase synchronization available
  • Auto recovery overcurrent and thermal protection
  • RoHS and China RoHS compliant
  • WEEE compliant (2012/19/UE RAEE II)

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STEVAL-ISA205V1 38 V, 2 A synchronous step-down switching regulator evaluation board based on the A6986H Quick view

Key Features

  • AECQ100 qualification
  • 2 A DC output current
  • 4 V to 38 V operating input voltage
  • Low consumption mode or low noise mode
  • Programmable ISKIP current
  • 30 μA IQ at light load (LCM VIN  = 12 V and VOUT  = 3.3 V)
  • 8 μA IQ-SHTDWN
  • Adjustable fSW (250 kHz - 2 MHz)
  • Output voltage adjustable from 0.85 V to VIN
  • Embedded output voltage supervisor
  • Synchronization (in all fSW range)
  • Adjustable soft-start time
  • Internal current limiting
  • Overvoltage protection
  • Peak current mode architecture
  • RDS(on)HS  = 180 mΩ; RDS(on)LS  = 150 mΩ
  • Thermal shutdown
  • RoHS and WEEE compliant

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STEVAL-ISA099V1 3 A step-down switching demonstration board based on the L7986 in DFN10 package Quick view

Key Features

  • 3 A DC output current
  • From 4.5 V to 38 V range input voltage
  • Output voltage adjustable from 0.6 V
  • 250 kHz switching frequency programmable up to 1 MHz
  • Internal soft-start and enable
  • Low dropout operation: 100% duty cycle
  • Voltage feed-forward
  • Zero load current operation
  • Overcurrent and thermal protection
  • RoHS compliant

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STEVAL-ISA069V1 3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in DFN 3x3 package Quick view

Key Features

  • 4 A peak output current
  • From 2.8 V to 5.5 V input voltage
  • Output voltage adjustable from 0.8 V
  • 1.5 MHz switching frequency
  • Internal soft-start and enable
  • Integrated 60 mΩ and 45 mΩ power MOSFETs
  • All ceramic capacitors
  • Power Good (POR)
  • Cycle-by-cycle current limiting
  • Current foldback short-circuit protection
  • RoHS compliant

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STEVAL-ISA082V1 4 A peak 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40IPHR Quick view

Key Features

  • Input voltage Vin = 4 V to 18 V
  • Output voltage Vout = 3.3 V
  • Maximum output current: 3 A
  • Switching frequency: 800 kHz
  • Short-circuit protected
  • RoHS compliant

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STEVAL-ISA095V1 Up to 3 A step-down switching regulator based on the ST1S14 Quick view

Key Features

  • 3 A DC output current
  • Operating input voltage from 5.5 V to 48 V
  • 850 kHz internally fixed switching frequency
  • Internal soft-start
  • Internal current limiting
  • Inhibit for zero current consumption
  • 2 mA maximum quiescent current over-temperature range
  • Thermal shutdown
  • RoHS compliant

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STEVAL-ISA094V1 3 A step-down switching power supply demonstration board based on the L7981 (HSOP8) Quick view

Key Features

  • 3 A DC output current
  • 4.5 V to 28 V input voltage
  • Output voltage adjustable from 0.6 V
  • 250 kHz switching frequency, programmable up to 1 MHz
  • Internal soft-start and enable
  • Low dropout operation: 100% duty cycle
  • Voltage feed-forward
  • Zero load current operation
  • Overcurrent and thermal protection
  • RoHS compliant

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STEVAL-ISA055V1 0.7 A / 1.2 V synchronous buck converter with enable function based on the ST1S12XX Quick view

Key Features

  • RDS(on) typ. 250 m and 400 m
  • Not switching quiescent current: max 600 μA over temperature range
  • Uses tiny capacitors and inductors
  • Internal soft-start
  • Enable function
  • Step-down current mode PWM (1.7 MHz) DCDC converter
  • 0.7 A output current capability
  • Fixed output voltage of 1.2 V
  • Synchronous rectification
  • Typical efficiency: > 90%
  • 3% DC output voltage tolerance

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STEVAL-ISA043V2 1.5 A / 3.3 V high frequency synchronous buck converter demonstration board based on the ST1S06 Quick view

Key Features

  • Adjustable current-mode pulse width modulation (PWM) synchronous, step-down DC-DC converter with inhibit function
  • Input voltage, Vin: 2.5 V to 5.5 V
  • Output voltage, Vout: 3.3 V
  • Output current, Iout: 1.5 A
  • Switching frequency: 1.5 MHz
  • RoHS compliant

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Schematics BOM Gerber
Part Number
STEVAL-1PS01AJR

Evaluation board based on ST1PS01AJR 400 mA nano-quiescent synchronous step-down converter

Key Features

  • 1.8 V to 5.5 V input operating range
  • Up to 400 mA output current capability
  • Tiny external components: L=2.2 µH typ.
  • Selectable output voltages: 1.9 V to 2.8 V
  • Output voltage Power Good
  • Dynamic output voltage selection (D0, D1)
  • Suitable for the following applications:
    • Wearable applications
    • Personal tracking monitors
    • Smart watches, sport bands
    • Energy harvesting, wireless sensors
    • Wearable and fitness accessories
    • Industrial sensors, portable low power devices
    • Single cell Li-Ion battery applications
    • Bluetooth® low energy
    • Zigbee
  • WEEE and RoHS compliant (hardware only)

Show More

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FEATURED RESOURCES

Schematics BOM Gerber
STEVAL-1PS01EJR

Evaluation board based on the ST1PS01EJR 400 mA nano-quiescent synchronous step-down converter

Key Features

  • 94% typical efficiency at 1 mA load (VIN =3.6 V, VOUT =3.3 V)
  • 1.8 V to 5.5 V input operating range
  • Up to 400 mA output current capability
  • Tiny external components: L=2.2 µH typ.
  • Selectable output voltages: 1.8 V to 3.3 V
  • Output voltage Power Good
  • Dynamic output voltage selection (D0, D1)
  • Suitable for the following applications:
    • Wearable applications
    • Personal tracking monitors
    • Smart watches, sport bands
    • Energy harvesting, wireless sensors
    • Wearable and fitness accessories
    • Industrial sensors, portable low power devices
    • Single cell Li-Ion battery applications
    • Bluetooth® low energy
    • ZigBee®
  • Hardware is WEEE and RoHS compliant

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Schematics BOM Gerber
STEVAL-1PS01DJR

Evaluation board based on ST1PS01DJR 400 mA nano-quiescent synchronous step-down converter

Key Features

  • 1.8 V to 5.5 V input operating range
  • Up to 400 mA output current capability
  • Tiny external components: L=2.2 µH typ
  • Selectable output voltages: 1.8 V to 2.8 V
  • Output voltage Power Good
  • Dynamic output voltage selection (D0, D1)
  • Suitable for the following applications:
    • Wearable applications
    • Personal tracking monitors
    • Smart watches, sport bands
    • Energy harvesting, wireless sensors
    • Wearable and fitness accessories
    • Industrial sensors, portable low power devices
    • Single cell Li-Ion battery applications
    • Bluetooth® low energy
    • ZigBee®
  • WEEE and RoHS compliant (hardware only)

Show More

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FEATURED RESOURCES

Schematics BOM Gerber
STEVAL-ISA152V1

3.3 V/3 A high efficiency step down DC-DC converter (VIN= 4.5 to 60 V) based on the L7987

Key Features

  • 3.3 V output voltage
  • 3 A DC output current
  • 4.5 V to 60 V input voltage
  • 500 kHz switching frequency
  • 3.5 ms programmed soft-start
  • VBIAS switch-over for improved efficiency at light load
  • 180° out of phase synchronization available
  • Open drain PGOOD available
  • Auto recovery overcurrent and thermal protection
  • RoHS compliant

Show More

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FEATURED RESOURCES

Schematics BOM Gerber
STEVAL-ISA158V1

38 V - 2 A synchronous step-down switching regulator evaluation board based on the A6986

Key Features

  • 4 V to 38 V operating input voltage
  • Low consumption mode or low noise mode
  • 30 µA IQ at light load (LCM VOUT = 3.3 V)
  • 5 µA IQ-SHTDWN
  • Adjustable fSW (250 kHz - 2 MHz)
  • Output voltage adjustable from 0.85 V to VIN
  • Embedded output voltage supervisor
  • Synchronization
  • Adjustable soft-start time
  • Internal current limiting
  • Overvoltage protection
  • Output voltage sequencing
  • Peak current mode architecture
  • RDS(on)HS = 180 mΩ; RDS(on)LS = 150 mΩ
  • Thermal shutdown
  • RoHS compliant

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FEATURED RESOURCES

Schematics BOM Gerber
STEVAL-ISA207V1

3 A step down DC/DC switching regulator (VIN = 4.5 V to 60 V) based on the A7987

Key Features

  • 4.5 V to 60 V input voltage
  • Step-down (buck) conversion
  • 3.3 V output voltage
  • Up to 3 A DC output current
  • 500 kHz switching frequency
  • 3.5 ms programmed soft-start
  • Compliant with ceramic output capacitors
  • 180° out-of-phase synchronization available
  • Auto recovery overcurrent and thermal protection
  • RoHS and China RoHS compliant
  • WEEE compliant (2012/19/UE RAEE II)

Show More

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FEATURED RESOURCES

Schematics BOM Gerber
STEVAL-ISA205V1

38 V, 2 A synchronous step-down switching regulator evaluation board based on the A6986H

Key Features

  • AECQ100 qualification
  • 2 A DC output current
  • 4 V to 38 V operating input voltage
  • Low consumption mode or low noise mode
  • Programmable ISKIP current
  • 30 μA IQ at light load (LCM VIN  = 12 V and VOUT  = 3.3 V)
  • 8 μA IQ-SHTDWN
  • Adjustable fSW (250 kHz - 2 MHz)
  • Output voltage adjustable from 0.85 V to VIN
  • Embedded output voltage supervisor
  • Synchronization (in all fSW range)
  • Adjustable soft-start time
  • Internal current limiting
  • Overvoltage protection
  • Peak current mode architecture
  • RDS(on)HS  = 180 mΩ; RDS(on)LS  = 150 mΩ
  • Thermal shutdown
  • RoHS and WEEE compliant

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Schematics BOM Gerber
STEVAL-ISA099V1

3 A step-down switching demonstration board based on the L7986 in DFN10 package

Key Features

  • 3 A DC output current
  • From 4.5 V to 38 V range input voltage
  • Output voltage adjustable from 0.6 V
  • 250 kHz switching frequency programmable up to 1 MHz
  • Internal soft-start and enable
  • Low dropout operation: 100% duty cycle
  • Voltage feed-forward
  • Zero load current operation
  • Overcurrent and thermal protection
  • RoHS compliant

Show More

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FEATURED RESOURCES

Schematics BOM Gerber
STEVAL-ISA069V1

3 A / 1.5 MHz step-down synchronous switching regulator based on the ST1S31 in DFN 3x3 package

Key Features

  • 4 A peak output current
  • From 2.8 V to 5.5 V input voltage
  • Output voltage adjustable from 0.8 V
  • 1.5 MHz switching frequency
  • Internal soft-start and enable
  • Integrated 60 mΩ and 45 mΩ power MOSFETs
  • All ceramic capacitors
  • Power Good (POR)
  • Cycle-by-cycle current limiting
  • Current foldback short-circuit protection
  • RoHS compliant

Show More

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Schematics BOM Gerber
STEVAL-ISA082V1

4 A peak 800 kHz fixed-frequency PWM synchronous step-down demonstration board with enable on/off based on the ST1S40IPHR

Key Features

  • Input voltage Vin = 4 V to 18 V
  • Output voltage Vout = 3.3 V
  • Maximum output current: 3 A
  • Switching frequency: 800 kHz
  • Short-circuit protected
  • RoHS compliant

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Schematics BOM Gerber
STEVAL-ISA095V1

Up to 3 A step-down switching regulator based on the ST1S14

Key Features

  • 3 A DC output current
  • Operating input voltage from 5.5 V to 48 V
  • 850 kHz internally fixed switching frequency
  • Internal soft-start
  • Internal current limiting
  • Inhibit for zero current consumption
  • 2 mA maximum quiescent current over-temperature range
  • Thermal shutdown
  • RoHS compliant

Show More

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FEATURED RESOURCES

Schematics BOM Gerber
STEVAL-ISA094V1

3 A step-down switching power supply demonstration board based on the L7981 (HSOP8)

Key Features

  • 3 A DC output current
  • 4.5 V to 28 V input voltage
  • Output voltage adjustable from 0.6 V
  • 250 kHz switching frequency, programmable up to 1 MHz
  • Internal soft-start and enable
  • Low dropout operation: 100% duty cycle
  • Voltage feed-forward
  • Zero load current operation
  • Overcurrent and thermal protection
  • RoHS compliant

Show More

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FEATURED RESOURCES

Schematics BOM Gerber
STEVAL-ISA055V1

0.7 A / 1.2 V synchronous buck converter with enable function based on the ST1S12XX

Key Features

  • RDS(on) typ. 250 m and 400 m
  • Not switching quiescent current: max 600 μA over temperature range
  • Uses tiny capacitors and inductors
  • Internal soft-start
  • Enable function
  • Step-down current mode PWM (1.7 MHz) DCDC converter
  • 0.7 A output current capability
  • Fixed output voltage of 1.2 V
  • Synchronous rectification
  • Typical efficiency: > 90%
  • 3% DC output voltage tolerance

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Schematics BOM Gerber
STEVAL-ISA043V2

1.5 A / 3.3 V high frequency synchronous buck converter demonstration board based on the ST1S06

Key Features

  • Adjustable current-mode pulse width modulation (PWM) synchronous, step-down DC-DC converter with inhibit function
  • Input voltage, Vin: 2.5 V to 5.5 V
  • Output voltage, Vout: 3.3 V
  • Output current, Iout: 1.5 A
  • Switching frequency: 1.5 MHz
  • RoHS compliant

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00 Files selected for download

Technical Documentation

    • Description Version Size Action
      AN1768
      ADMISSIBLE AVALANCHE POWER OF SCHOTTKY DIODES
      1.1
      46.82 KB
      PDF
      AN2025
      CONVERTER IMPROVEMENT USING SCHOTTKY RECTIFIER AVALANCHE SPECIFICATION
      1.1
      147.59 KB
      PDF
      AN604
      Calculation of conduction losses in a power rectifier
      3.2
      137.74 KB
      PDF
      AN4021
      Calculation of reverse losses in a power diode
      1.0
      120.47 KB
      PDF
      AN5028
      Calculation of turn-off power losses generated by a ultrafast diode
      1.0
      1.68 MB
      PDF
      AN4381
      Current sharing in parallel diodes
      1.0
      449.12 KB
      PDF
      AN3267
      Impact of power MOSFET VGS on buck converter performance
      1.2
      1.13 MB
      PDF
      AN1453
      NEW FAMILY OF 150V POWER SCHOTTKY
      1.1
      131.48 KB
      PDF
      AN4391
      New P-channel trench technology from ST for low power DC-DC conversions and load switching applications
      1.0
      1.6 MB
      PDF
      AN4150
      Power MOSFET technology gate current needs in a synchronous buck converter
      1.2
      1.35 MB
      PDF
      AN4191
      Power MOSFET: Rg impact on applications
      1.2
      1.45 MB
      PDF
      AN4192
      Power MOSFETs: best choice guide for VRM application
      1.0
      4.8 MB
      PDF
      AN5046
      Printed circuit board assembly recommendations for STMicroelectronics PowerFLAT packages
      4.0
      4.82 MB
      PDF
      AN5088
      Rectifiers thermal management, handling and mounting recommendations
      2.0
      2.32 MB
      PDF
      AN533
      SCRs, TRIACs, and AC switches, thermal management precautions for handling and mounting
      3.6
      217.19 KB
      PDF
      AN443
      SERIES OPERATION ON FAST RECTIFIERS
      2.1
      202.48 KB
      PDF
      AN1542
      THE THERMAL RUNAWAY LAW IN SCHOTTKY USED IN OR-ING APPLICATION
      1.1
      57.47 KB
      PDF
      AN869
      Tj max limit of Schottky diodes
      2.2
      60.9 KB
      PDF
      AN1768

      ADMISSIBLE AVALANCHE POWER OF SCHOTTKY DIODES

      AN2025

      CONVERTER IMPROVEMENT USING SCHOTTKY RECTIFIER AVALANCHE SPECIFICATION

      AN604

      Calculation of conduction losses in a power rectifier

      AN4021

      Calculation of reverse losses in a power diode

      AN5028

      Calculation of turn-off power losses generated by a ultrafast diode

      AN4381

      Current sharing in parallel diodes

      AN3267

      Impact of power MOSFET VGS on buck converter performance

      AN1453

      NEW FAMILY OF 150V POWER SCHOTTKY

      AN4391

      New P-channel trench technology from ST for low power DC-DC conversions and load switching applications

      AN4150

      Power MOSFET technology gate current needs in a synchronous buck converter

      AN4191

      Power MOSFET: Rg impact on applications

      AN4192

      Power MOSFETs: best choice guide for VRM application

      AN5046

      Printed circuit board assembly recommendations for STMicroelectronics PowerFLAT packages

      AN5088

      Rectifiers thermal management, handling and mounting recommendations

      AN533

      SCRs, TRIACs, and AC switches, thermal management precautions for handling and mounting

      AN443

      SERIES OPERATION ON FAST RECTIFIERS

      AN1542

      THE THERMAL RUNAWAY LAW IN SCHOTTKY USED IN OR-ING APPLICATION

      AN869

      Tj max limit of Schottky diodes

    • Description Version Size Action
      DN0010
      Adapting ST power line modem evaluation boards to communicate over a DC bus
      1.2
      404.54 KB
      PDF
      DN0011
      ST1S03 alternative topology: Using a buck in a negative buck-boost configuration
      1.2
      361.3 KB
      PDF
      DN0010

      Adapting ST power line modem evaluation boards to communicate over a DC bus

      DN0011

      ST1S03 alternative topology: Using a buck in a negative buck-boost configuration

Publications and Collaterals

    • Description Version Size Action
      A698x family High-performance automotive synchronous DC-DC converters 1.0
      1.13 MB
      PDF
      A798x, A597x switching regulators for car power management 1.0
      714.2 KB
      PDF
      AST1S3x family Power optimization for postregulated automotive systems 1.0
      896.44 KB
      PDF

      A698x family High-performance automotive synchronous DC-DC converters

      A798x, A597x switching regulators for car power management

      AST1S3x family Power optimization for postregulated automotive systems

    • Description Version Size Action
      Linear and Switching Voltage Regulators Selection Guide 3.0
      370.88 KB
      PDF

      Linear and Switching Voltage Regulators Selection Guide

    • Description Version Size Action
      Switching Converters (DC-DC) – Quick Reference Guide 1.0
      481.92 KB
      PDF

      Switching Converters (DC-DC) – Quick Reference Guide

Development Tools

    • Part Number

      Diode product finder application for Android and iOS

eDesignSuite

Converter

Input

V This option is required. And must be less than or equal to Volt. Max [V]
V This option is required. And must be greater than or equal to Volt. Min [V]

Output Power

V This option is required and must be a number.
A This option is required and must be a number.

Power Management

Part number Description
A7985A 2 A step-down switching regulator for automotive applications
A7986A 3 A step-down switching regulator for automotive applications
L6985F 38 V 500 mA synchronous step-down switching regulator with 30 uA quiescent current
L6986 38 V 2 A synchronous step-down switching regulator with 30 uA quiescent current
L6986F 38 V 1.5 A synchronous step-down switching regulator with 30 uA quiescent current
L7987 61 V 3 A asynchronous step-down switching regulator with adjustable current limitation
L7987L 61 V 2 A asynchronous step-down switching regulator with adjustable current limitation
ST1S06 Synchronous rectification with inhibit, 1.5 A, 1.5 MHz adjustable, step-down switching regulator
ST1S12XX Synchronous rectification with inhibit, 0.7 A, 1.7 MHz adjustable, step-down switching regulator
ST1S14 Up to 3 A step down switching regulator
ST1S31 3 A DC step-down switching regulator
ST1S40 3A DC step-down switching regulator
ST1S41 4 A step-down switching regulator
Part number
2 A step-down switching regulator for automotive applications
3 A step-down switching regulator for automotive applications
38 V 500 mA synchronous step-down switching regulator with 30 uA quiescent current
38 V 2 A synchronous step-down switching regulator with 30 uA quiescent current
38 V 1.5 A synchronous step-down switching regulator with 30 uA quiescent current
61 V 3 A asynchronous step-down switching regulator with adjustable current limitation
61 V 2 A asynchronous step-down switching regulator with adjustable current limitation
Synchronous rectification with inhibit, 1.5 A, 1.5 MHz adjustable, step-down switching regulator
Synchronous rectification with inhibit, 0.7 A, 1.7 MHz adjustable, step-down switching regulator
Up to 3 A step down switching regulator
3 A DC step-down switching regulator
3A DC step-down switching regulator
4 A step-down switching regulator