AMS1117-1.8V LDO Voltage Regulator IC – 1A Low Dropout SOT-223 SMD

Overview

The AMS1117-1.8V is a popular low-dropout (LDO) linear regulator known for its high efficiency and small footprint. It is specifically designed to provide a fixed 1.8V output from a higher voltage source (up to 15V). This is the “go-to” regulator for powering the 1.8V rails of advanced microcontrollers, digital signal processors (DSPs), and high-speed memory modules. Its SOT-223 surface-mount package offers excellent thermal performance while saving valuable space on your PCB.

Key Features

• Low Dropout Voltage: Can maintain a stable 1.8V output even when the input voltage is only slightly higher.

• 1A Peak Current: Capable of delivering up to 1A (typically 800mA continuous) to power memory-heavy modules.

• Built-in Protection: Features internal thermal overload and short-circuit protection to prevent your project from burning out.

• Stable Performance: Works beautifully with tantalum or electrolytic capacitors for a ripple-free power supply.

• Industry Standard: Compatible with almost all modern SMD circuit board designs.

Technical Specifications

Common Applications

• High-End IoT: Powering the 1.8V cores of ESP32-S3 or specialized RF modules.

• FPGAs & CPLDs: Providing logic power to programmable chips.

• Battery-Powered Devices: Efficiently stepping down Li-ion battery voltage.

• Hard Drive/SSD Repair: Frequently used in the power management circuits of storage devices.