Power 3 pins

AMS1117

Low-dropout LDO regulator, 1A. Fixed 3.3V/5V versions, SOT-223 package.

// connector diagram 3 pins

// loading diagram...

// Specifications

Input Voltage

Up to 15V

Output Options

1.8V, 2.5V, 3.3V, 5V, adjustable

Output Current

Dropout Voltage

1.1V–1.3V at 1A

Accuracy

±1.5%

Package

SOT-223 / TO-252

// Pin Reference Table

Pin	Name	Function	Type
1	ADJUST/GND	Ground for fixed, adjust for variable	GND
2	OUTPUT	Regulated output voltage	PWR
3	INPUT	Unregulated input	PWR

The AMS1117 is a low-dropout (LDO) linear voltage regulator available in fixed 1.8V, 2.5V, 3.3V, 5V, and adjustable versions. It provides 1A output with only 1.1–1.3V dropout, popular on USB-powered boards.