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Product Detailed Parameters
- Description：IC REG LINEAR 2.5V 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)：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 is a low-dropout (LDO) linear voltage regulator manufactured by STMicroelectronics, providing a fixed 2.5 V output with a maximum load 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. The device exhibits low quiescent current, making it suitable for battery-powered applications. It is housed in a DPAK surface-mount package and supports operation across a temperature range of -40°C to +125°C.
Feature Summary
- Very low dropout voltage capability for efficient power management
- Low quiescent current consumption optimized for battery life
- Fixed 2.5 V output voltage with 0.5 A load capacity
Applications
- Battery-powered systems requiring low noise and low power
- Low-noise analog circuit supply regulation
- General-purpose DC-DC conversion in portable electronics
Procurement Notes
Verify the specific suffix (e.g., TR) for packaging configuration such as tape and reel or cut tape. Confirm the exact output voltage variant, as the LFXX series offers multiple fixed options. Ensure the DPAK package matches your PCB footprint requirements. Check for end-of-life status or alternative recommendations from the manufacturer if sourcing new production units.
Selection Notes
Select this component when a stable 2.5 V rail is required with minimal voltage drop across the regulator. Consider the thermal performance in the DPAK package under full 0.5 A load conditions. Verify that the input voltage remains within the specified 40 V maximum limit. Evaluate the low quiescent current benefit against system standby power constraints.
Part Context
The LF25CDT belongs to the LFXX family of very low-drop regulators from STMicroelectronics. This series provides various fixed output voltages tailored for low-power applications. The design emphasizes efficiency through reduced dropout voltage and static current, targeting industries where energy conservation and signal integrity are critical.
Replacement Considerations
Consult official documentation for direct pin-compatible substitutes within the LFXX series offering different fixed voltages. Verify thermal characteristics and package compatibility before integrating alternative LDOs.
