General Description
The AMS1117 series of adjustable and fixed voltage
regulators are designed to provide up to 1A output
current and to operate down to 1.2V input-to-output
differential. The dropout voltage of the device is
guaranteed maximum 1.3V, decreasing at lower
load currents.
On-chip trimming adjusts the reference voltage to
1.5%. Current limit is set to minimize the stress
under overload conditions on both the regulator and
power source circuitry.
The AMS1117 devices are pin compatible with other
three-terminal SCSI regulators and are offered in the
low profile surface mount SOT-223 package, in the
8L SOIC package and in the TO-252 (DPAK) plastic
package.

Features
• Three terminal Adjustable or Fixed Voltages:
1.25, 1.5V, 2.5V, 2.85V, 3.3V and 5.0V
• 1A maximum output current
• 1.2V of typical dropout voltage
• 0.2% maximum load regulation
• 0.4% maximum line regulation
• -40 to +125°C temperature range
• Available in SOT223, TO-252 and SO-8
package
• RoHS & WEEE compliant

Applications
• High Efficiency Linear Regulators
• Post Regulators for Switching Supplies
• 5V to 3.3V Linear Regulator
• Adjustable Power Supply
• Notebook/Personal Computer Supplies
• Active SCSI Terminator
• Battery Powered Instrumentation