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Product Detailed Parameters
- Description：IC REG LINEAR 3.8V 150MA SOT23-5
- Series：-
- Mfr：STMicroelectronics
- Package：Tape & Reel (TR)
- Output Configuration：Positive
- Output Type：Fixed
- Number of Regulators：1
- Voltage - Input (Max)：14V
- Voltage - Output (Min/Fixed)：3.8V
- 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 LK112M38TR is a fixed-output linear voltage regulator from STMicroelectronics, providing a stable 3.8V output with a maximum current capacity of 150mA. It operates within an input voltage range of up to 16V and features a typical dropout voltage of 0.29V at the rated load. The device incorporates internal protection mechanisms including overcurrent limiting and thermal shutdown. It is housed in a compact SOT-23-5 surface-mount package and supports an operating temperature range from -30°C to +125°C.
Feature Summary
- Integrated overcurrent and thermal shutdown protection for enhanced circuit reliability
- Low dropout voltage characteristic suitable for battery-powered applications
- Fixed positive output configuration simplifies design implementation
Applications
- Portable electronic devices requiring stable low-voltage power rails
- Battery-operated systems utilizing linear regulation
- General-purpose power management in embedded circuits
Procurement Notes
Verify the specific suffix 'M38' confirms the 3.8V fixed output variant. Confirm the 'TR' designation indicates tape-and-reel packaging. Ensure compatibility with the SOT-23-5 footprint during PCB layout. Check RoHS compliance status if required by project specifications.
Selection Notes
Select this component when a precise 3.8V rail is needed with moderate current demands. Consider the 150mA limit against peak load requirements. Evaluate the dropout performance relative to the minimum available input voltage. Verify that the SOT-23-5 package fits the mechanical constraints of the enclosure.
Part Context
This part belongs to the LK112 series of low-dropout regulators manufactured by STMicroelectronics. The series offers various fixed output voltages tailored for different system requirements while maintaining consistent package dimensions and protection features across the family.
Replacement Considerations
Direct substitutes include other LK112 series variants with different output voltages, such as LK112M18TR or LK112M25TR, provided the voltage requirement changes. Cross-brand replacements require matching pinout, current rating, and package type.
