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Product Detailed Parameters
- Description：IC REG LINEAR 2.5V 1.5A DPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：6V
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.4V @ 1.5A
- Current - Output：1.5A
- Current - Quiescent (Iq)：2.5 mA
- Current - Supply (Max)：-
- PSRR：65dB ~ 55dB (120Hz ~ 1kHz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C (TJ)
- 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 LD39150DT25-R is a fixed-output low dropout linear regulator manufactured by STMicroelectronics. It provides a fixed output voltage of 2.5 V with a maximum output current of 1.5 A. The device operates from an input supply ranging from 2.5 V to 6 V. Key electrical characteristics include a typical dropout voltage of 40 mV at a 300 mA load and a quiescent current of 2.5 mA. It features logic-controlled electronic shutdown, internal current limiting, and thermal protection. The component is housed in a TO-252-3 (DPAK) surface-mount package and supports an operating temperature range from -40 °C to +125 °C.
Feature Summary
- Ultra-low dropout voltage performance ensures efficient regulation under minimal headroom conditions.
- Logic-controlled electronic shutdown function enables deep sleep mode for significant power savings.
- Integrated short-circuit constant current limiting and thermal protection safeguard the device during fault conditions.
Applications
- Low voltage microprocessor power supplies
- Memory circuit powering
- Battery-powered portable devices
Procurement Notes
Verify the specific suffix 'R' corresponds to the tape-and-reel packaging configuration required for your assembly line. Confirm that the TO-252-3 footprint matches your PCB design guidelines. Ensure the 2.5 V fixed output aligns with your system voltage requirements before finalizing procurement.
Selection Notes
Select this component when a stable 2.5 V rail is needed with up to 1.5 A load capability. It is suitable for applications requiring low noise and fast dynamic response. Consider the DPAK package for its thermal dissipation capabilities relative to smaller packages. Verify input voltage constraints do not exceed the 6 V maximum rating.
Part Context
This part belongs to the LD39150 series of ultra-low drop linear regulators developed on a BiCMOS process. The series offers various fixed and adjustable output voltages. The DT25 variant specifically denotes the 2.5 V output option within the DPAK package family, designed for efficiency and compactness in portable electronics.
Replacement Considerations
Check for other LD39150 variants with different output voltages if 2.5 V is incorrect. Verify pinout compatibility with alternative LDOs offering similar 1.5 A current ratings and DPAK packages. Ensure substitute components meet the same thermal and electrical specifications.
