ST1S12G18R - STMicroelectronics

Manufacturer Part Number

ST1S12G18R

Manufacturer

stmicroelectronics

Introduction

The ST1S12G18R is a compact, highly efficient step-down (buck) regulator from STMicroelectronics, designed for powering low-voltage circuits from a higher voltage supply.

Product Features and Performance

Step-down (Buck) regulator with positive output configuration

Fixed 1.8V output voltage

Supports input voltages from 2.5V to 5.5V

Capable of delivering up to 700mA output current

Features a high switching frequency of 1.7MHz

Incorporates synchronous rectification for improved efficiency

Operates across a wide temperature range of -40°C to 125°C

Product Advantages

High efficiency and low power consumption

Compact SOT-23-5 package suitable for space-constrained applications

High-frequency operation allows for small external components

Thermal overload protection and short-circuit protection enhance safety

Key Technical Parameters

Voltage Input (Min): 2.5V

Voltage Input (Max): 5.5V

Voltage Output (Min/Fixed): 1.8V

Current Output: 700mA

Frequency Switching: 1.7MHz

Operating Temperature: -40°C ~ 125°C

Quality and Safety Features

Over-temperature protection

Short-circuit protection

Synchronous rectification technique for better efficiency

Compatibility

Wide input voltage range compatible with various sources

Suited for use with a variety of low-voltage applications

Application Areas

Battery-powered devices

Portable electronics

Low-power IoT devices

Wireless peripherals

Product Lifecycle

Currently in active production with no announced discontinuation, ensuring long-term availability

Replacements or upgrades can be identified via stmicroelectronics product portfolio as needed

Several Key Reasons to Choose This Product

High efficiency leads to prolonged battery life in portable devices

Compact package size facilitates use in space-limited designs

Integrated safety features ensure reliability and durability under adverse conditions

The wide operating temperature range makes it versatile for industrial applications

High switching frequency enables the use of smaller, less expensive passive components