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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：-
Download product information
Overview
The L7912ACV is a three-terminal negative voltage regulator from the L79xxAC 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 operates within a junction temperature range of 0 to 125 °C and accepts a DC input voltage up to -35 V for this output level. It features thermal overload protection, short-circuit protection, and output transition SOA protection. 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.
- Compatible with split power supply designs due to matching voltage options with the L78xxA positive standard series.
- Capable of delivering over 1.5 A output current when adequate heat sinking is provided.
Applications
- Split power supplies
- Local on-card regulation
- Adjustable voltage and current circuits using external components
Procurement Notes
Verify that the specific part number matches the required AC tolerance specifications and TO-220 package type. Confirm environmental compliance status such as ECOPACK lead-free interconnect requirements against project constraints. Ensure the ordering suffix corresponds exactly to the intended packaging format before finalizing procurement orders.
Selection Notes
Select this component for applications requiring a stable negative voltage rail with high current capacity. The AC series offers tighter output voltage tolerances compared to standard variants. Consider thermal management strategies, as the device relies on external heat sinking to sustain maximum current ratings effectively under load conditions.
Part Context
This device belongs to the L79xxAC series of three-terminal negative regulators. The series includes multiple fixed output voltages such as -5 V, -8 V, -12 V, -15 V, and -24 V. These regulators are designed to complement the L78xxA positive series, facilitating balanced dual-rail power supply architectures in electronic systems.
Replacement Considerations
L7912AC
FAQ
What is the maximum DC input voltage allowed for the L7912ACV?
The maximum DC input voltage is -35 V.
Does the L7912ACV include internal protection mechanisms?
Yes, it includes thermal overload protection, short-circuit protection, and output transition SOA protection.
