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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.5% SOT23-3
- Series：-
- Mfr：Semtech Corporation
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：2.495V
- Voltage - Output (Max)：30 V
- Current - Output：130 µA
- Operating Temperature：-55°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The SC431MSKQTRT is an adjustable shunt voltage reference manufactured by Semtech Corporation. It features a three-terminal design with a typical dynamic output impedance of 0.25Ω and operates within a current range of 130µA to 150mA. The device provides an adjustable output voltage from 2.495V to 30V using two external resistors. It is housed in a SOT-23-3 package and offers thermal stability guaranteed over the industrial temperature range.
Feature Summary
- Three-terminal adjustable shunt regulator architecture
- Trimmed bandgap design ensuring high precision
- Active output circuitry for sharp turn-on characteristics
- Guaranteed thermal stability across operating temperatures
Applications
- Linear regulators
- Adjustable power supplies
- Switching power supplies
- Battery operated computers
- Instrumentation systems
Procurement Notes
Verify component authenticity through authorized distributors, as counterfeit references may exhibit incorrect impedance or drift. Confirm the SOT-23-3 package marking matches Semtech specifications. Check RoHS compliance status if required for specific manufacturing environments. Ensure the ordering suffix corresponds to the desired tolerance and packaging format.
Selection Notes
Select this component when replacing TL1431, TL431, LM431, or AS431 devices requiring low dynamic output impedance. Choose the SC431MSKQTRT for applications needing precise voltage adjustment between 2.495V and 30V. Consider its 130µA minimum operating current for low-power standby modes. Verify that the SOT-23-3 footprint fits the target PCB layout constraints.
Part Context
The SC431 series represents a family of programmable precision references designed as direct replacements for standard zener diodes. Manufactured by Semtech Corporation, these devices utilize a trimmed bandgap reference core to maintain accuracy. The MSKQTRT variant specifically denotes the SOT-23-3 surface-mount package configuration with reel packaging for automated assembly processes.
Replacement Considerations
This component serves as an alternate for TL1431, TL431, LM431, and AS431. Verify pinout compatibility before substitution. Ensure the replacement supports the required output voltage range and current handling capabilities of the original design.
