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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% SOT23-5
- Series：-
- Mfr：Semtech Corporation
- Package：Tape & Reel (TR)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：1.24V
- Voltage - Output (Max)：16 V
- Current - Output：100 µA
- Operating Temperature：0°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：SC-74A, SOT-753
- Supplier Device Package：SOT-23-5
- Grade：-
- Qualification：-
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Overview
The SC431LC5SK-1TRT is an adjustable low-voltage shunt regulator manufactured by Semtech Corporation. It provides a reference voltage output range from 1.24 V to 20 V with an initial accuracy of 1%. The device operates within a cathode current range of 100 µA to 100 mA and functions at temperatures between -40°C and +85°C. Packaged in a SOT-23-3 surface-mount format, it serves as a precision voltage reference component for power management applications.
Feature Summary
- Adjustable output voltage capability spanning 1.24 V to 20 V
- High initial accuracy of 1% for precise voltage regulation
- Wide operating temperature range suitable for industrial environments
Applications
- Linear regulators
- Switching power supplies
- Battery operated computers
- Instrumentation systems
Procurement Notes
Verify the exact suffix configuration against the manufacturer's official datasheet to ensure compatibility with specific tolerance and packaging requirements. Confirm end-of-life status and obsolescence notices prior to finalizing design-in decisions. Cross-reference pinout assignments with the specific package variant to prevent integration errors during PCB layout and assembly processes.
Selection Notes
Select this component when a compact, high-accuracy adjustable shunt regulator is required for low-voltage circuits. The SOT-23-3 package offers space efficiency for dense layouts. Ensure the application demands fall within the specified 100 µA to 100 mA current range and that the 1% initial accuracy meets the system's precision requirements without additional trimming.
Part Context
This part belongs to the SC431 family of adjustable shunt regulators, which are designed as replacements for standard Zener diodes. The series features a trimmed bandgap design and low dynamic output impedance. It is widely used in power management ICs for providing stable reference voltages in various electronic devices.
Replacement Considerations
Public confirmed substitutes include TL1431, TL431, LM431, and AS431. Verify electrical parameter compatibility and pinout alignment before substituting these alternative part numbers in existing designs.
