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Product Detailed Parameters
- Description：IC REG LINEAR 2.5V 500MA DPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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：-
- 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 LF25CDT-TR is a fixed-output Low Dropout (LDO) voltage regulator manufactured by STMicroelectronics, providing a stable 2.5 V output with a maximum continuous current of 0.5 A. It operates within an input voltage range of -0.5 V to 40 V and features a typical dropout voltage of 0.45 V at rated load. The device maintains low quiescent current consumption, making it suitable for power-sensitive designs. It is housed in a TO-252-3 surface-mount package and supports operation across an extended temperature range from -40 °C to +125 °C.
Feature Summary
- Very low dropout voltage capability ensures efficient regulation even when input voltage approaches the output level.
- Low quiescent current design minimizes power waste, extending battery life in portable applications.
- Robust thermal performance allows reliable operation in high-temperature environments up to 125 °C.
Applications
- Battery-powered electronic systems requiring efficient voltage regulation
- Low-noise power supply circuits for sensitive analog components
- General-purpose DC-to-DC step-down regulation in compact form factors
Procurement Notes
Verify the specific suffix 'DT' confirms the TO-252-3 package type and 'TR' indicates tape-and-reel packaging. Confirm the output voltage is strictly 2.5 V as this variant is part of a family with multiple fixed outputs. Ensure the manufacturer is STMicroelectronics to avoid counterfeit or mislabeled components from other sources.
Selection Notes
Select this component when a fixed 2.5 V rail is required with moderate current capacity up to 500 mA. Consider the TO-252-3 package for adequate heat dissipation compared to smaller SOT packages. Evaluate the input voltage range against the source supply to ensure the dropout voltage remains within acceptable limits for the application's efficiency requirements.
Part Context
This part belongs to the LFXX series of very low drop regulators from STMicroelectronics. The series offers various fixed output voltages optimized for low-power and low-noise applications. The LF25CDT-TR specifically targets the 2.5 V output segment, sharing common architectural features such as internal protection circuits and high ripple rejection ratios typical of the LDO topology.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative LDOs based on pinout, voltage, and current ratings if substitution is necessary.
