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Product Detailed Parameters
- Description：IC REG LINEAR 5V 500MA DPAK
- 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：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：DPAK
- Grade：-
- Qualification：-
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Overview
The LF50ABDT is a fixed-output low dropout (LDO) linear voltage regulator manufactured by STMicroelectronics. It provides a stable 5 V output with a maximum load current of 0.5 A. The device features a typical dropout voltage of 0.45 V at full load and operates within an input voltage range up to 16 V. It includes internal thermal shutdown and short-circuit protection mechanisms. The component is housed in a DPAK surface-mount package, designed for efficient power management in compact electronic circuits.
Feature Summary
- Integrated on-off switch functionality for system power control
- Low quiescent current consumption suitable for battery-powered applications
- Internal thermal overload and short-circuit protection
Applications
- Battery-powered portable electronics
- Low-noise power supply systems
- Embedded microcontroller power regulation
Procurement Notes
Verify the specific suffix 'TR' indicates tape-and-reel packaging when ordering. Confirm the package type matches the required PCB footprint. Ensure the input voltage does not exceed the absolute maximum rating to prevent device damage. Check for RoHS compliance requirements if applicable to the final assembly.
Selection Notes
Select this component for designs requiring a fixed 5 V rail with moderate current demands. Consider the DPAK package for surface-mount assembly constraints. Evaluate thermal dissipation requirements based on the expected voltage drop and load current. Verify that the low dropout characteristic meets the minimum input voltage headroom of the system.
Part Context
This part belongs to the LFXX series of very low dropout regulators from STMicroelectronics. The series offers various fixed output voltages optimized for low-power and low-noise environments. The LF50ABDT variant specifically targets 5 V applications requiring high efficiency near the dropout region.
Replacement Considerations
Compatible substitutes include other 5 V LDOs with similar current ratings and packages, such as the LF50ABPT or LF50ABV, provided pin compatibility and thermal characteristics are verified.
