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Product Detailed Parameters
- Description：IC REG LINEAR 8V 150MA SOT23-5
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：14V
- Voltage - Output (Min/Fixed)：8V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：0.35V @ 150mA
- Current - Output：150mA
- Current - Quiescent (Iq)：250 µA
- Current - Supply (Max)：-
- PSRR：55dB (400Hz)
- Control Features：Enable
- Protection Features：Over Current, Over Temperature
- Operating Temperature：-30°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- Grade：-
- Qualification：-
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Overview
The STMicroelectronics LK112M80TR is a positive fixed low-dropout linear voltage regulator housed in a surface-mount SOT-23-5 package. It provides a stable 8V output with a maximum continuous current of 150mA. The device features a typical dropout voltage of 290mV at full load and operates within an input voltage range of 8.5V to 14V. It includes a built-in electronic switch controllable by TTL or CMOS logic, with a quiescent current of 250µA. The component supports operation from -40°C to +125°C.
Feature Summary
- Integrated electronic switch compatible with TTL and CMOS control signals
- Low dropout performance for efficient voltage regulation under varying loads
- Fixed 8V output voltage ensuring stable supply for sensitive circuits
Applications
- Battery-powered systems requiring efficient voltage regulation
- Portable electronics utilizing low-noise power supplies
- Embedded systems needing compact surface-mount regulators
Procurement Notes
Verify the complete part number including suffixes against official STMicroelectronics documentation to ensure correct packaging and temperature grade. Confirm that the SOT-23-5 footprint matches your PCB design requirements. Cross-reference datasheet revisions to validate electrical characteristics and switching logic compatibility before finalizing procurement orders.
Selection Notes
Select this component when a fixed 8V output is required in a minimal footprint. Ensure input voltage remains between 8.5V and 14V to maintain regulation. Consider the 150mA current limit and thermal dissipation capabilities in the SOT-23-5 package. Verify that the 250µA quiescent current meets system power budget constraints.
Part Context
The LK112 series comprises low-dropout regulators designed for portable applications. The M80 suffix specifically denotes the 8V fixed output variant. This family integrates protection features and logic-controllable shutdown, distinguishing it from standard LDOs without integrated switching capabilities.
Replacement Considerations
Consult STMicroelectronics official substitution guides for pin-compatible alternatives. Verify that any substitute maintains the 8V output, 150mA current rating, and SOT-23-5 package dimensions.
