AMS1117-3.3 LDO 800MA DC 5V to 3.3V Step-Down Power Supply Module

The AMS1117-3.3 LDO power supply module is a small step-down board that turns 5 V DC into a steady 3.3 V. It is built around the AMS1117-3.3 low-dropout linear regulator and is listed for up to 800 mA, a simple way to power ESP8266 and ESP32 modules, 3.3 V sensors, radio modules such as the nRF24L01 and other low-voltage parts from USB or an Arduino 5 V pin.

AMS1117-3.3 LDO Module Specifications

• Regulator IC: AMS1117-3.3, fixed-output low-dropout (LDO) linear regulator
• Input voltage: 5 V DC (as listed); 15 V is the IC maximum
• Output voltage: 3.3 V
• Output current: up to 800 mA (as listed; less in practice because of heat)
• Dropout: about 1.1 V at full load, so the input should be at least about 4.5 V
• Type: linear regulator, with no switching noise

AMS1117-3.3 LDO Module Applications

• Powering ESP8266 and ESP-01 modules from 5 V
• 3.3 V sensors and nRF24L01 radio modules
• A 3.3 V rail on a breadboard next to a 5 V Arduino
• Battery and USB-powered projects that need a clean 3.3 V supply

What's in the Box

• 1 × AMS1117-3.3 5 V to 3.3 V power supply module

Tip: A linear regulator turns the extra voltage into heat: from 5 V at 500 mA it has to get rid of about 0.85 W. Keep the current moderate, and use a buck converter first if you start from 12 V.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.