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Product Detailed Parameters
- Description：IC REG LINEAR 12V 1.5A D2PAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：35V
- Voltage - Output (Min/Fixed)：12V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：2V @ 1A (Typ)
- Current - Output：1.5A
- Current - Quiescent (Iq)：8 mA
- Current - Supply (Max)：-
- PSRR：55dB (120Hz)
- Control Features：-
- Protection Features：Over Temperature, Short Circuit
- Operating Temperature：0°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Supplier Device Package：D2PAK
- Grade：-
- Qualification：-
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Overview
The L7812CD2T-TR is a positive linear voltage regulator from the STMicroelectronics L78xx series, designed for fixed 12V output with a maximum continuous current of 1.0A. It operates within an input voltage range up to 35V and features internal thermal overload and short-circuit protection. The device utilizes a D2PAK surface-mount package (TO-263) with three pins, supporting operation at temperatures up to 150°C. Static current consumption is specified at 3mA.
Feature Summary
- Provides stable fixed positive voltage regulation suitable for general-purpose power supply applications.
- Incorporates built-in safety mechanisms including thermal shutdown and current limiting to protect against overload conditions.
- Designed for direct surface-mount installation using the D2PAK form factor.
Applications
- General-purpose power supply circuits requiring regulated 12V rails
- Battery-powered systems needing stable voltage conversion
- Industrial control equipment power distribution
Procurement Notes
Verify the specific suffix CD2T-TR corresponds to the D2PAK surface-mount package and tape-and-reel delivery format. Confirm that the 1.0A current rating aligns with your thermal management design, as performance depends on adequate heat dissipation. Ensure input voltage does not exceed the 35V absolute maximum rating to prevent device damage during procurement validation.
Selection Notes
Select this component when a robust, high-current positive linear regulator is required in a surface-mount footprint. Compare against the L78M12CDT-TR if lower current (500mA) suffices for space constraints, or the L7812CV for through-hole requirements. Consider the 150°C junction temperature capability for high-temperature environments where standard 125°C devices may be insufficient.
Part Context
This part belongs to the widely adopted L78xx family of three-terminal positive linear regulators manufactured by STMicroelectronics. The L78 series is known for its simplicity and reliability in basic voltage regulation tasks. The 'C' designation typically indicates commercial grade temperature ranges, while 'D2T' specifies the D2PAK surface-mount package configuration.
Replacement Considerations
The MC7812BD2TR4 from onsemi is a documented alternative offering identical 12V/1A specifications in a D2PAK-3 package. Verify pinout compatibility and thermal characteristics before substitution.
