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Product Detailed Parameters
- Description：IC REG LINEAR 5V 500MA PPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：16V
- Voltage - Output (Min/Fixed)：5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.7V @ 500mA
- Current - Output：500mA
- Current - Quiescent (Iq)：1 mA
- Current - Supply (Max)：12 mA
- PSRR：76dB ~ 60dB (120Hz ~ 10kHz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Supplier Device Package：PPAK
- Grade：-
- Qualification：-
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Overview
The LF50ABPT is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a stable 5 V output with a maximum load current of 500 mA. The device supports an input voltage range up to 16 V and features a typical dropout voltage of 0.4 V at full load. It operates within a temperature range of -40 °C to 125 °C and maintains output accuracy within ±1 %. Packaged in a surface-mount TO-252-5 format, it includes internal protections against thermal overload and short circuits.
Feature Summary
- Fixed 5 V output voltage with high precision
- Low dropout voltage for efficient power management
- Integrated thermal shutdown and short-circuit protection
- Suitable for battery-powered and low-noise applications
Applications
- Battery-powered portable electronics
- Low-noise analog circuit power supplies
- General-purpose DC-to-DC regulation
- Embedded system power conditioning
Procurement Notes
Verify the specific suffix (e.g., TR for tape and reel) matches the required packaging configuration. Confirm that the TO-252-5 package dimensions align with the target PCB footprint. Ensure the input voltage does not exceed the 16 V maximum rating under all operating conditions. Check for RoHS compliance requirements if applicable to the final assembly standards.
Selection Notes
Select this component when a fixed 5 V rail is required with moderate current capability. The low quiescent current makes it appropriate for energy-sensitive designs. Consider the thermal performance in the TO-252-5 package for heat dissipation needs. Verify that the input voltage remains sufficiently above the output voltage to maintain regulation without excessive power dissipation.
Part Context
This part belongs to the LFXX series of low-dropout regulators from STMicroelectronics. The series offers various fixed output voltages optimized for low-power applications. The LF50ABPT specifically targets the 5 V requirement within this family, utilizing a robust linear topology suitable for noise-sensitive environments.
Replacement Considerations
Direct pin-compatible substitutes may include other 5V LDOs in TO-252 packages from the same manufacturer or competitors, provided they meet the 500 mA current and 16 V input constraints. Always verify electrical specifications and thermal characteristics before substitution.
