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AMS1117CD-5.0
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Product Detailed Parameters
- Description：IC REG LINEAR 5V 1A TO252
- Series：-
- Mfr：UMW
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：12V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.3V @ 1A
- Current - Output：1A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：75dB (120Hz)
- Control Features：Current Limit
- Protection Features：Over Temperature
- Operating Temperature：-40°C ~ 125°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：TO-252 (DPAK)
- Grade：-
- Qualification：-
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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.
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
Applications
- Laptop, Palmtop, and Notebook Computers
- Battery Charger Systems
- SCSI-II Active Terminator
- Cellular and Cordless Telephones
- SMPS Post-Regulator
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.
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.
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.
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.
