AMS1117CD-5.0

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The UMW AMS1117CD-5.0 is a positive low dropout linear voltage regulator providing a fixed 5.0V output with 1.5% accuracy. It delivers up to 1A output current and operates within an input voltage range of 12V (recommended) to 18V (absolute maximum). The device features a typical dropout voltage of 1.2V at full load, line regulation of 9mV typ, and load regulation of 10mV typ. It includes thermal shutdown and current limiting protection, functioning reliably across a junction temperature range of -40°C to 125°C.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Fixed 5.0V output with 1.5% tolerance
• Integrated thermal shutdown protection
• Built-in current limiting circuitry
• Low dropout operation down to 1V

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Laptop, Palmtop, and Notebook Computers
• Battery Charger Systems
• SCSI-II Active Terminator
• Cellular and Cordless Telephones
• SMPS Post-Regulator

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the package type matches the CD suffix designation for TO-252-2L. Confirm the manufacturer source is UMW or authorized distributor. Ensure the component meets RoHS compliance requirements if specified by the project. Check datasheet revisions for any updates to electrical characteristics or pin configurations before finalizing procurement.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a stable 5V rail is required from higher input voltages with moderate current demands. The TO-252-2L package offers improved thermal dissipation compared to smaller surface mount options. Consider the 1.2V typical dropout when designing the minimum input voltage headroom. Verify that the application does not exceed the 1A continuous current limit under worst-case thermal conditions.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the AMS1117 series of 1A LDO regulators manufactured by UMW. The series includes adjustable versions and various fixed output voltages such as 1.2V, 1.5V, 1.8V, 2.5V, 3.3V, and 5.0V. The CD suffix specifically denotes the TO-252-2L plastic package variant, distinguishing it from SOT-223-3L or SOT-89-3L packages available in the same family.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

Compatible substitutes include AMS1117-5.0 from Analog Devices or other manufacturers offering identical pinouts and electrical specifications. Ensure replacement parts support the TO-252-2L package and maintain the 1A current rating and 5.0V fixed output tolerance.