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Product Detailed Parameters
- Description：IC REG LINEAR 2.5V 3A DPAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：30V
- Voltage - Output (Min/Fixed)：2.5V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.5V @ 3A
- Current - Output：3A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：72dB (120Hz)
- 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 LD1085DT25R is a positive fixed linear voltage regulator manufactured by STMicroelectronics, delivering up to 3A of output current. It provides a fixed 2.5V output with a maximum dropout voltage of 1.5V at full load. The device features a low quiescent current of 10 mA and offers high power supply rejection ratio (PSRR) of 72dB at 120Hz. It operates within an input voltage range of up to 30V and supports junction temperatures from -40°C to 125°C. Integrated protection includes overcurrent limiting and thermal shutdown. The component is housed in a DPAK surface-mount package.
Feature Summary
- Provides stable 3A output current capability for high-power applications
- Includes integrated overcurrent and thermal shutdown protection mechanisms
- Features low quiescent current consumption to improve system efficiency
Applications
- Battery-powered systems requiring efficient voltage regulation
- Post-regulation stages for switching power supplies
- Local voltage regulation in embedded control circuits
Procurement Notes
Verify component authenticity through authorized distributors as the part status is listed as obsolete. Confirm RoHS compliance status, as documentation indicates variations across production batches. Ensure the DPAK package variant matches design requirements. Check for alternative lead times or end-of-life notices from the manufacturer before finalizing procurement plans.
Selection Notes
Select this component when a fixed 2.5V output at 3A is required in a compact surface-mount form factor. Consider the 1.5V dropout voltage at full load to ensure sufficient input-output differential. Evaluate thermal management needs due to power dissipation at high currents. Verify that the DPAK package fits the PCB layout constraints compared to larger packages like D2PAK.
Part Context
This regulator belongs to the LD1085 family of low-dropout linear regulators designed for high-current applications. The DT suffix denotes the specific DPAK package configuration with a fixed 2.5V output voltage. It shares core electrical characteristics with other variants in the series but differs in packaging and output voltage settings.
Replacement Considerations
Check for pin-compatible alternatives within the same LD1085 family offering different output voltages or packages. Verify if newer generation LDOs from STMicroelectronics provide improved thermal performance or lower dropout characteristics while maintaining the 3A current rating.
