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Product Detailed Parameters
- Description：IC REG LINEAR 12V 3A D2PAK-3
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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：Surface Mount
- Package / Case：TO-263-4, D2PAK (3 Leads + Tab), TO-263AA
- Supplier Device Package：D2PAK-3
- Grade：-
- Qualification：-
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Overview
The LD1085D2M12R is a positive adjustable linear voltage regulator manufactured by STMicroelectronics, belonging to the LD1085 series. It provides up to 3A of output current with a maximum dropout voltage of 1.5V at full load. The device supports an input voltage range up to 30V and delivers an adjustable output voltage between 1.25V and 28.5V. It features integrated overcurrent and thermal overload protection mechanisms. The component is housed in a D2PAK-3 surface-mount package and operates within a temperature range of -40°C to +125°C.
Feature Summary
- Capable of delivering high continuous output currents up to 3A for demanding power applications.
- Ensures stable regulation with low dropout characteristics under varying load conditions.
- Incorporates internal circuitry for automatic overcurrent limiting and thermal shutdown protection.
Applications
- General-purpose power supply circuits requiring regulated positive voltage rails
- Battery-powered systems needing efficient linear regulation
- Embedded electronic devices utilizing surface-mount assembly processes
Procurement Notes
Verify the specific suffix '12' indicates the adjustable variant configuration rather than a fixed voltage setting. Confirm the D2PAK-3 package marking matches official datasheet silkscreen specifications. Ensure compatibility with standard lead-free soldering profiles required for RoHS compliance during manufacturing integration.
Selection Notes
Select this component when designing circuits that require high current capability with minimal heat dissipation compared to older PNP-based regulators. The quiescent current flows into the load, improving overall system efficiency. Verify that the application environment stays within the specified operating temperature limits for reliable long-term performance.
Part Context
This part belongs to the LD1085 family of low-dropout regulators designed as pin-compatible replacements for older three-terminal adjustable regulators. The series offers improved efficiency and thermal performance. The D2M suffix denotes the specific surface-mount packaging format used for automated assembly in modern electronics manufacturing.
FAQ
Does the quiescent current flow out of or into the load?
Unlike traditional PNP regulators, the quiescent current of the LD1085 flows into the load, which contributes to increased overall efficiency.
What is the minimum capacitor requirement for stability?
Only a minimum 10µF capacitor is required for stability, simplifying the external component count.
