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AMS1117-3.3
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Product Detailed Parameters
- Description：IC REG LINEAR 3.3V 1A SOT-223-3L
- Series：-
- Mfr：EVVO
- 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)：3.3V
- 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-261-4, TO-261AA
- Supplier Device Package：SOT-223-3L
- Grade：-
- Qualification：-
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Overview
The EVVO AMS1117-3.3 is a positive low dropout voltage regulator providing a fixed 3.3V output with a maximum current of 1A. It operates within an input voltage range up to 18V and features a typical dropout voltage of 1.2V at full load. The device includes thermal shutdown and current limiting protection, ensuring stability across a junction temperature range of -40°C to 150°C. Packaged in SOT-223-3L, it offers line regulation of 9mV and load regulation of 10mV.
Feature Summary
- Fixed 3.3V output with less than 1.5% accuracy tolerance
- Integrated thermal shutdown and current limiting protection
- Low dropout voltage operation for efficient power management
- High ripple rejection capability for noise-sensitive applications
Applications
- Battery chargers
- Post-regulators for switching mode power supplies
- Portable instrumentation
- Active SCSI terminators
Procurement Notes
Verify the manufacturer designation as EVVO on the component marking or official datasheet, as AMS1117 is a common industry part number originally associated with other manufacturers. Confirm the package type is SOT-223-3L and that the suffix indicates the fixed 3.3V version. Ensure compliance with RoHS standards if required by your assembly process.
Selection Notes
Select this component when a stable 3.3V rail is needed from higher input voltages with moderate current demands. Consider the thermal resistance of the SOT-223 package for heat dissipation requirements. Verify input voltage does not exceed the 18V absolute maximum rating. Ensure output capacitor values meet stability requirements specified in the electrical characteristics.
Part Context
This component belongs to the AMS1117 series of 1A LDO regulators. The series includes adjustable versions and various fixed output voltages such as 1.2V, 1.5V, 1.8V, 2.5V, and 5.0V. The AMS1117-3.3 specifically targets applications requiring a precise 3.3V supply from sources like 5V or battery packs.
Replacement Considerations
Compatible substitutes include AMS1117-3.3 from Advanced Monolithic Systems (AMS) or STMicroelectronics. Ensure the replacement maintains the SOT-223-3L package and identical pinout configuration for direct board compatibility.
