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Product Detailed Parameters
- Description：IC REG LINEAR 1.7V 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)：1.7V
- Voltage - Output (Max)：-
- Voltage Dropout (Max)：-
- 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 LK112M17TR is a low-dropout linear regulator manufactured by STMicroelectronics, featuring a fixed 1.7V output voltage and a maximum output current of 200 mA. It operates within an input voltage range of 2.5 V to 14 V and utilizes a SOT-23-5 surface-mount package. The device exhibits a maximum dropout voltage of 500 mV at full load and maintains a quiescent current of 250 uA in ON mode. Voltage regulation accuracy is specified at 2% at 25 °C, with an operating temperature range spanning from -40 °C to +125 °C.
Feature Summary
- Integrates a shutdown function controllable via TTL or CMOS logic levels for power management
- Includes internal thermal shutdown and overcurrent protection circuitry for enhanced reliability
- Supports external noise reduction through a dedicated bypass pin connection
Applications
- Battery-powered portable electronic devices requiring efficient power regulation
- Embedded systems utilizing microcontrollers and sensors
- Communication equipment needing stable low-noise power supplies
Procurement Notes
Verify the specific suffix 'TR' indicates tape-and-reel packaging configuration when sourcing components. Confirm that the 1.7V output variant matches the target circuit design requirements. Ensure compatibility with the SOT-23-5 footprint during PCB layout planning. Cross-reference the manufacturer part number against official distributor catalogs to validate authenticity and availability status before finalizing procurement orders.
Selection Notes
Select this component for applications demanding low quiescent current and compact surface-mount integration. The wide input voltage range accommodates various battery chemistries. Verify that the 1.7V output aligns with downstream logic level requirements. Consider the thermal performance characteristics relative to the expected ambient operating conditions and load currents to ensure stable operation within the specified temperature limits.
Part Context
This device belongs to the LK112S series of low-noise low-dropout regulators. The series is characterized by high precision and integrated protection features. It serves as a power management solution for sensitive analog and digital circuits. The family emphasizes efficiency and reliability in space-constrained designs.
Replacement Considerations
Consult official STMicroelectronics documentation for verified cross-reference part numbers. Ensure any substitute maintains identical output voltage, current capacity, and package dimensions. Verify functional equivalence regarding shutdown control and protection mechanisms.
