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Product Detailed Parameters
- Description：IC REG LINEAR -12V 1.5A D2PAK
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- 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：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 L7912ACD2T-TR 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 DC input voltage range of -15.5 V to -27 V and supports junction temperatures from 0 °C to 125 °C. It utilizes a D2PAK surface-mount package (PSSO2) for efficient thermal management.
Feature Summary
- Provides local on-card regulation to eliminate distribution problems associated with single-point regulation.
- Incorporates internal thermal overload protection, short-circuit protection, and output transition SOA protection.
- Compatible with external components to achieve adjustable voltages and currents beyond fixed settings.
Applications
- Split power supplies requiring matched positive and negative voltage rails
- Local on-card voltage regulation in electronic circuits
- Adjustable voltage and current configurations using external components
Procurement Notes
Verify that the specific order code matches the required D2PAK package configuration and tape-and-reel delivery format. Confirm compliance with environmental standards such as ECOPACK lead-free specifications. Ensure the selected component aligns with the absolute maximum ratings defined in the official datasheet to prevent operational damage.
Selection Notes
Select this component when a stable -12 V negative rail is required with high current handling capabilities. The D2PAK package offers superior thermal dissipation compared to through-hole alternatives, supporting sustained operation at higher loads. Verify that the application circuit includes necessary input and output capacitors for stability and transient response.
Part Context
This part belongs to the L79xxAC series of 2% negative voltage regulators. It shares functional characteristics with other members of the family, such as the L7905AC and L7915AC, differing primarily in the fixed output voltage setting. The series is designed to complement the L78xxA positive standard series for balanced power supply designs.
Replacement Considerations
Direct substitutes include other L7912 variants from STMicroelectronics, such as the L7912CV or L7912CT, provided the package type and electrical parameters are compatible with the existing design constraints.
