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Product Detailed Parameters
- Description：IC REG LINEAR 2.5V 500MA PPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：16V
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.7V @ 500mA
- Current - Output：500mA
- Current - Quiescent (Iq)：1 mA
- Current - Supply (Max)：12 mA
- PSRR：82dB ~ 65dB (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 LF25ABPT-TR is a fixed positive low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a stable 2.5V output with a maximum continuous current capability of 500mA. The device is housed in a surface-mount TO-252-5 (PPAK) package, suitable for space-constrained designs. It operates within an extended temperature range from -40°C to +125°C. Key electrical specifications include a typical static current of 50µA and a dropout voltage of 200mV at full load. The regulator features high power supply rejection ratio (PSRR), ranging from 82dB at 120Hz to 65dB at higher frequencies, ensuring clean output voltage under varying input conditions.
Feature Summary
- Fixed 2.5V output voltage regulation
- High current capacity up to 500mA
- Low dropout voltage performance
- Extended industrial temperature operation
Applications
- Portable battery-powered equipment
- Embedded system power supplies
- Industrial control modules
- Communication interface circuits
Procurement Notes
Verify the component authenticity by checking the manufacturer's marking on the TO-252-5 package against official STMicroelectronics identification guides. Ensure the ordering suffix matches the reel packaging specification. Confirm that the application circuit includes appropriate input and output capacitors as recommended in the datasheet to maintain stability and prevent oscillation during operation.
Selection Notes
Select this regulator when a precise 2.5V rail is required for digital logic or analog reference circuits. Consider the thermal dissipation capabilities of the PPAK package relative to the expected load current and ambient temperature. Compare the 500mA limit against peak transient demands to ensure adequate headroom. Evaluate the dropout voltage requirements against the minimum available input voltage in the specific design topology.
Part Context
This component belongs to the LFxx series of very low drop regulators from STMicroelectronics. The series offers various fixed output voltages and packages including TO-220, DPAK, and PPAK. The LF25ABPT-TR specifically utilizes the PPAK form factor for surface mount assembly. It is designed for applications requiring efficient linear regulation with minimal quiescent current consumption compared to standard regulators.
Replacement Considerations
Compatible substitutes include other LFxx series variants such as LF18ABPT-TR or LF50ABPT-TR if different voltage levels are acceptable. Cross-reference with equivalent pin-compatible regulators from other manufacturers offering similar 500mA current ratings and TO-252-5 packaging. Verify thermal characteristics and PSRR specifications match the original design requirements before substitution.
