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Product Detailed Parameters
- Description：IC REG LINEAR -12V 1.5A TO220
- Series：-
- Mfr：STMicroelectronics
- Package：Tube
- Output Configuration：Negative
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：-35V
- Voltage - Output (Min/Fixed)：-12V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：1.1V @ 1A (Typ)
- Current - Output：1.5A
- Current - Quiescent (Iq)：3 mA
- Current - Supply (Max)：-
- PSRR：60dB (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 L7912CV-DG is a three-terminal negative voltage regulator from the L79xxC series, manufactured by STMicroelectronics. It provides a fixed output voltage of -12 V with an output current capability up to 1.5 A. The device features thermal overload protection, short circuit protection, and output transition SOA protection. It operates within a junction temperature range of 0 to 150 °C and accepts a DC input voltage up to -35 V for this output level. The component is housed in a TO-220 package.
Feature Summary
- Provides local on-card regulation to eliminate distribution problems associated with single point regulation.
- Suitable for split power supplies due to matching voltage options with the L78xx positive standard series.
- Includes internal thermal overload protection and short circuit protection for enhanced reliability.
Applications
- Split power supply systems requiring negative voltage rails.
- Local on-card voltage regulation for electronic circuits.
- General purpose negative voltage regulation applications.
Procurement Notes
Verify that the specific order code matches the required package type, as the datasheet indicates availability in TO-220, D²PAK, and TO-220FP variants. Confirm environmental compliance grades such as ECOPACK specifications if required by the design. Ensure adequate heat sinking is provided to support the maximum output current rating during operation.
Selection Notes
Select this component when a fixed -12 V negative rail is required with up to 1.5 A load capacity. It is particularly appropriate for designs utilizing both positive and negative regulators from the same family to simplify inventory. Consider the thermal resistance values provided in the datasheet to determine necessary heatsinking for the chosen operating conditions.
Part Context
This part belongs to the L79xxC series of three-terminal negative regulators produced by STMicroelectronics. The series offers various fixed output voltages including -5 V, -8 V, -12 V, and -15 V. These regulators are designed to complement the L78xx positive series, facilitating the creation of dual-polarity power supplies commonly used in analog and mixed-signal electronics.
Replacement Considerations
L7912CV
FAQ
What is the maximum DC input voltage allowed for the L7912CV-DG?
The absolute maximum DC input voltage is -35 V for the -12 V output version.
Does the L7912CV-DG include protection against short circuits?
Yes, the device includes built-in short circuit protection.
