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Product Detailed Parameters
- Description：IC REG LINEAR 12V 100MA TO92-3
- Series：-
- Mfr：STMicroelectronics
- Package：Cut Tape (CT),Tape & Box (TB)
- 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)：-
- Current - Output：100mA
- Current - Quiescent (Iq)：6 mA
- Current - Supply (Max)：6.5 mA
- PSRR：42dB (120Hz)
- Control Features：-
- Protection Features：Over Current, Over Temperature, Short Circuit
- Operating Temperature：-40°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：-
Download product information
Overview
The L78L12ABZ-AP is a three-terminal positive linear voltage regulator from the STMicroelectronics L78L series, housed in a TO-92-3 package. It provides a fixed output voltage of 12 V with an output current capability up to 100 mA. The device features internal current limiting and thermal shutdown protection. Electrical specifications include a maximum input voltage of 35 V, a quiescent current of 6.5 mA at 25 °C, and line regulation of 200 mV (VI = 16 to 27 V). It operates within a junction temperature range of -40 °C to +125 °C.
Feature Summary
- Internal current limiting and thermal shutdown for robust operation
- No external components required for basic regulation
- ±4% output voltage tolerance
Applications
- Local or on-card voltage regulation
- Replacement for Zener diode/resistor combinations
- Building blocks for high-current regulators using power pass elements
Procurement Notes
Verify that the ordering suffix 'AP' corresponds to the specific tape-and-reel packaging configuration intended for the application, as standard suffixes may indicate bulk or different reel formats. Confirm the component matches the L78L12ABZ-AP designation rather than the generic L78L12ABZ to ensure correct supply chain handling and package variant alignment.
Selection Notes
Select this component when a fixed 12 V output is required with moderate current demands up to 100 mA. The AB suffix indicates a tighter ±4% voltage tolerance compared to the C suffix. Ensure the input voltage does not exceed 35 V and that adequate thermal management is provided if power dissipation approaches limits, considering the TO-92 package thermal resistance.
Part Context
This part belongs to the L78Lxx family of low-power positive voltage regulators. The L78L series is designed for applications requiring simple, reliable regulation without complex external circuitry. The TO-92 package offers a compact solution for through-hole mounting, suitable for space-constrained designs where surface-mount options like SOT-89 are not preferred.
Replacement Considerations
L78L12ABZ
FAQ
What is the output voltage tolerance for the L78L12ABZ-AP?
The 'A' suffix indicates a ±4% output voltage tolerance.
Does the L78L12ABZ-AP require external capacitors?
No external components are required for basic operation, though capacitors may be added for stability in specific high-frequency noise environments.
