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Product Detailed Parameters
- Description：IC REG LINEAR 12V 3A TO220
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：30V
- Voltage - Output (Min/Fixed)：12V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.5V @ 3A
- Current - Output：3A
- Current - Quiescent (Iq)：10 mA
- Current - Supply (Max)：-
- PSRR：66dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220
- Grade：-
- Qualification：-
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Overview
The LD1085V12 is a positive low-dropout linear voltage regulator manufactured by STMicroelectronics, belonging to the LD1085 series. It provides a fixed 12 V output with a maximum continuous current capability of 3 A. The device operates within an input voltage range of 3.4 V to 30 V and features a typical dropout voltage of 1.3 V at full load. Designed for through-hole mounting in a TO-220-3 package, it supports an operating temperature range from -40 °C to +125 °C. Key electrical specifications include a line regulation of 10 mV, load regulation of 10 mV, and a quiescent current of 5 mA.
Feature Summary
- Fixed 12 V output voltage with high current delivery capability
- Low dropout performance ensuring efficient regulation under varying load conditions
- Integrated thermal protection mechanisms for safe operation
Applications
- General-purpose power supply circuits requiring stable 12 V rails
- Battery-powered systems utilizing linear regulation
- Industrial control equipment power stages
Procurement Notes
Verify the specific suffix code against official datasheets to confirm pinout compatibility and thermal characteristics. Ensure the selected package variant matches the intended PCB layout requirements. Cross-reference manufacturer part numbers with authorized distributor catalogs to validate authenticity and traceability before procurement.
Selection Notes
Select this component when a fixed 12 V output is required with up to 3 A load capacity. Consider the TO-220-3 package for through-hole assembly needs. Evaluate thermal dissipation requirements based on the input-output voltage differential and ambient operating conditions to ensure reliable performance within the specified temperature range.
Part Context
This regulator is part of the LD1085 family, designed for applications demanding moderate current levels with low noise and good line/load regulation. It serves as a robust solution for converting higher unregulated voltages to stable lower DC levels in consumer and industrial electronics.
Replacement Considerations
Compatible substitutes include the LM317T adjustable regulator configured for 12 V output or the LT1085CT-12 fixed regulator. Verify pin compatibility and thermal resistance values before substitution.
