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Product Detailed Parameters
- Description：IC REG LINEAR -12V 100MA TO92-3
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Box (TB)
- 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)：-
- Current - Output：100mA
- Current - Quiescent (Iq)：6 mA
- Current - Supply (Max)：6.5 mA
- PSRR：42dB (120Hz)
- Control Features：-
- Protection Features：Over Temperature, Short Circuit
- Operating Temperature：0°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Supplier Device Package：TO-92-3
- Grade：-
- Qualification：-
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Overview
The L79L12ACZ-AP is a three-terminal negative linear voltage regulator from the STMicroelectronics L79L00 series. It provides a fixed output voltage of -12 V with an output current capability up to 100 mA. The device operates within an input voltage range of -14.5 V to -27 V and features thermal overload and short-circuit protection. It is housed in a TO-92-3 package and is designed for local or on-card regulation applications.
Feature Summary
- Integrates internal current limiting and thermal shutdown mechanisms for robust operation.
- Provides fixed negative voltage regulation without requiring external components.
- Offers improved output impedance compared to Zener diode/resistor combinations.
Applications
- Local or on-card negative voltage regulation
- Elimination of noise associated with single-point regulation
- Replacement for Zener diode/resistor combinations
Procurement Notes
Verify that the specific ordering suffix matches the required packaging configuration, as the datasheet indicates distinct availability for tube versus tape and reel formats. Confirm the component's electrical characteristics align with the intended operating temperature range and load conditions before finalizing procurement specifications.
Selection Notes
Select this component when a fixed negative supply rail is required for low-current circuits. Ensure the input voltage remains within the specified limits to maintain regulation. Consider the thermal resistance of the TO-92 package and the necessity of adequate copper area on the printed circuit board for effective heat dissipation during continuous operation.
Part Context
This part belongs to the L79L00 series of three-terminal negative regulators manufactured by STMicroelectronics. The series includes various output voltage options ranging from -5 V to -15 V. The 'AC' designation indicates a ±5% output voltage tolerance, distinguishing it from standard 'C' variants which typically offer ±10% tolerance.
Replacement Considerations
Compatible substitutes include other L79L12 variants such as L79L12ACZ or L79L12ACU, provided the package type and voltage tolerance requirements are met. Verify pinout compatibility and thermal performance when replacing with equivalent parts from different manufacturers.
