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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% TO92-3
- Series：-
- Mfr：onsemi
- Package：Bulk,Bulk
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：1.24V
- Voltage - Output (Max)：16 V
- Current - Output：20 mA
- Operating Temperature：-40°C ~ 85°C (TA)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 Long Body
- Supplier Device Package：TO-92 (TO-226)
- Grade：-
- Qualification：-
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Overview
The TLV431ALP is a low voltage precision adjustable shunt regulator from onsemi. It features a programmable output voltage range of 1.24 V to 16 V and operates within an ambient temperature range of -40 °C to 85 °C. The device guarantees a reference accuracy of ±1.0% at 25 °C and ±2.0% over the industrial temperature range. It exhibits a sharp low current turn-on characteristic with a dynamic impedance of 0.20 Ω over an operating current range of 100 µA to 20 mA. The recommended cathode current ranges from 0.1 mA to 20 mA, and the maximum cathode-to-anode voltage is 18 V.
Feature Summary
- Programmable output voltage range spanning 1.24 V to 16 V
- Guaranteed reference accuracy of ±1.0% at 25 °C and ±2.0% across the industrial temperature range
- Sharp low current turn-on characteristic combined with low dynamic output impedance
- Wide operating current range supporting applications from 50 µA to 20 mA
Applications
- Low output voltage (3.0 V to 3.3 V) switching power supply error amplifier
- Adjustable voltage or current linear and switching power supplies
- Voltage monitoring circuits
- Current source and sink circuits
- Analog and digital circuits requiring precision references
Procurement Notes
Verify the specific package suffix against the ordering information table to ensure correct shipping configuration. Confirm whether Pb-Free status is required for the application. Check the datasheet for tape and reel specifications if bulk packaging is not suitable. Ensure the selected part number matches the desired tolerance grade and operating temperature range.
Selection Notes
Select the TLV431ALP when a precise low-voltage reference is needed in compact designs. Consider the TO-92-3 package for through-hole mounting or other packages for surface mount needs. Evaluate stability requirements regarding load capacitance and equivalent series resistance. Verify that the operating current stays within the recommended 0.1 mA to 20 mA range for optimal performance.
Part Context
This component belongs to the TLV431A/B series of low voltage precision adjustable shunt regulators manufactured by onsemi. The series includes variants like the TLV431B which offers higher accuracy. These devices are designed as replacements for Zener diodes in applications requiring precise reference voltages. They are available in multiple miniature packages including TO-92-3, TSOP-5, and SOT-23-3.
Replacement Considerations
TLV431BLP
FAQ
What is the guaranteed reference accuracy of the TLV431ALP?
The TLV431A series guarantees a reference accuracy of ±1.0% at 25 °C and ±2.0% over the entire industrial temperature range of -40 °C to 85 °C.
How does the TLV431ALP function in isolated power supplies?
When combined with an optocoupler, the TLV431ALP can be used as an error amplifier for controlling the feedback loop in isolated low output voltage switching power supplies.
