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Product Detailed Parameters
- Description：IC REG LINEAR 12V 1.5A TO220
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- 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：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220
- Grade：-
- Qualification：-
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Overview
The L7812CV-DG is a three-terminal positive linear voltage regulator from the STMicroelectronics L78 series. It provides a fixed 12 V output with a maximum continuous current of 1.5 A. The device operates within an input voltage range up to 35 V and supports junction temperatures from 0 °C to +125 °C. Key electrical characteristics include a typical static current of 4.4 mA, line regulation of 50 mV, and load regulation of 100 mV. It is housed in a TO-220 package for through-hole mounting.
Feature Summary
- Integrates internal current limiting, thermal shutdown, and safe area protection for robust operation under fault conditions.
- Provides local on-card voltage regulation to eliminate distribution issues associated with single-point regulation systems.
- Capable of delivering over 1 A output current when adequate heat sinking is applied.
Applications
- Local on-card regulation in electronic circuits
- General-purpose power supply units requiring fixed positive voltage
- Embedded systems needing reliable 12 V rail generation
Procurement Notes
Verify the specific suffix 'DG' against the manufacturer's official datasheet to confirm packaging details and RoHS compliance status. Ensure the ordering part number matches the exact pinout and thermal requirements for your PCB layout. Cross-reference the component marking with the latest production documentation to avoid counterfeit or obsolete stock.
Selection Notes
Select this component for applications requiring a simple, fixed 12 V source with moderate current demands up to 1.5 A. It is suitable for designs where efficiency is secondary to cost and simplicity. Ensure the input voltage remains within the specified maximum limit and that thermal management strategies are implemented to handle power dissipation at full load.
Part Context
This component belongs to the L78xx family of three-terminal positive regulators. The series offers various fixed output voltages including 5 V, 6 V, 8 V, 9 V, 15 V, 18 V, and 24 V. These devices are widely used in industrial and consumer electronics due to their reliability and ease of use in standard linear regulation topologies.
Replacement Considerations
Compatible substitutes include other L7812 variants such as L7812ACDTR or LM7812, provided they match the TO-220-3 package and electrical specifications. Verify pin compatibility and thermal performance before substitution.
