Up to 3 A step down switching regulator

Download datasheet

Order a free sample and buy from our distributors

Sample & Buy
Overview
Tools & Software
Resources
Solutions
Quality & Reliability
Sales Briefcase
eDesignSuite
Get Started
Sample & Buy
Partner products
  • The ST1S14 is a step-down monolithic power switching regulator able to deliver up to 3 A DC current to the load depending on the application conditions. The high current level is also achieved thanks to a HSOP8 package with exposed frame, that allows to reduce the Rth(JA)down to approximately 40 °C/W. The output voltage can be set from 1.22 V. The device uses an internal N-channel DMOS transistor (with a typical RDS(on)of 200 mΩ) as the switching element to minimize the size of the external components. The internal oscillator fixes the switching frequency at 850 kHz. Power good open collector output validates the regulated output voltage as soon as it reaches the regulation. Pulse-by-pulse current limit offers an effective constant current short-circuit protection. Current foldback decreases overstress in a persistent short-circuit condition.

    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
    • Power good open collector output
    • Current mode architecture
    • Embedded compensation network
    • Zero load current operation
    • Internal current limiting
    • Inhibit for zero current consumption
    • 2 mA maximum quiescent current over temperature range
    • 250 mΩ typ. RDS(on)
    • Thermal shutdown

Circuit Diagram

Download Download

Sample & Buy

Part Number
Package
Packing Type
Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
Country of Origin
Order from Distributors
Order from ST
ST1S14PHR PowerSO-8 Tape And Reel
Active
0.761 10000 EAR99 PHILIPPINES Check Availability

Distributor availability ofST1S14PHR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 22409 1 Order Now
RS COMPONENTS EUROPE 8660 5 Order Now
AVNET AMERICA 2500 0 Order Now
FUTURE WORLDWIDE 45000 2500 Order Now
ARROW EUROPE 29500 0 Order Now
MOUSER WORLDWIDE 24843 1 Order Now
Farnell Element14 EUROPE 2537 1 Order Now
RUTRONIK EUROPE 5000 2500 Order Now

Distributor reported inventory date: 2019-07-16

Distributor Name

DIGIKEY

Stock

22409

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

8660

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

2500

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

45000

Min.Order

2500

Region

WORLDWIDE Order Now

ARROW

Stock

29500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

24843

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2537

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

5000

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2019-07-16

Get sample

ST1S14PHR

Package

PowerSO-8

Packing Type

Tape And Reel

Unit Price (US$)

0.761*

Distributor availability ofST1S14PHR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 22409 1 Order Now
RS COMPONENTS EUROPE 8660 5 Order Now
AVNET AMERICA 2500 0 Order Now
FUTURE WORLDWIDE 45000 2500 Order Now
ARROW EUROPE 29500 0 Order Now
MOUSER WORLDWIDE 24843 1 Order Now
Farnell Element14 EUROPE 2537 1 Order Now
RUTRONIK EUROPE 5000 2500 Order Now

Distributor reported inventory date: 2019-07-16

Distributor Name

DIGIKEY

Stock

22409

Min.Order

1

Region

WORLDWIDE Order Now

RS COMPONENTS

Stock

8660

Min.Order

5

Region

EUROPE Order Now

AVNET

Stock

2500

Min.Order

0

Region

AMERICA Order Now

FUTURE

Stock

45000

Min.Order

2500

Region

WORLDWIDE Order Now

ARROW

Stock

29500

Min.Order

0

Region

EUROPE Order Now

MOUSER

Stock

24843

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

2537

Min.Order

1

Region

EUROPE Order Now

RUTRONIK

Stock

5000

Min.Order

2500

Region

EUROPE Order Now

Distributor reported inventory date: 2019-07-16

Marketing Status

Active

Unit Price (US$)

0.761

Quantity

10000

ECCN (US)

EAR99

Country of Origin

PHILIPPINES

(*) 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

Recommended for you

Related Applications

Factory Automation

Home, Building and City Automation

LED Lighting and Controls

Power Supplies and Converters

Smart Farming

Evaluation Tools

    • Part Number

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

      Up to 3 A step-down switching regulator (Vin = 5.5 V to 48 V) based on the ST1S14

00 Files selected for download

Technical Documentation

    • Description Version Size Action
      DS6966
      Up to 3 A step-down switching regulator
      2.0
      2.42 MB
      PDF
      DS6966

      Up to 3 A step-down switching regulator

Publications and Collaterals

    • Description Version Size Action
      DC-DC converters
      557.92 KB
      PDF

      DC-DC converters

    • Description Version Size Action
      Electric vehicle (EV) ecosystem 1.1
      1.28 MB
      PDF
      Switching Converters (DC-DC) – Quick Reference Guide 1.0
      481.92 KB
      PDF

      Electric vehicle (EV) ecosystem

      Switching Converters (DC-DC) – Quick Reference Guide

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
ST1S14PHR
Active
PowerSO-8 Industrial Ecopack2

ST1S14PHR

Package:

PowerSO-8

Material Declaration**:

Marketing Status

Active

Package

PowerSO-8

Grade

Industrial

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com 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.

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.