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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% SOT23-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：1.24V
- Voltage - Output (Max)：18 V
- Current - Output：70 mA
- Operating Temperature：-40°C ~ 85°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 TLVH431AIDBZR is a low-voltage adjustable precision shunt regulator from Texas Instruments, housed in an SOT-23-3 package. It features a reference voltage of 1.24 V and supports an adjustable output range up to 18 V. The device operates with a maximum cathode current of 80 mA and maintains an initial accuracy of 1%. It functions within a temperature range of -40°C to +125°C, exhibiting a temperature coefficient of 138 PPM/°C.
Feature Summary
- Provides precise voltage regulation suitable for low-voltage applications
- Offers adjustable output capability via external resistors
- Features high thermal stability across industrial temperature ranges
Applications
- Secondary side regulation in flyback switch-mode power supplies
- Adjustable voltage and current references
- Zener diode replacement in board-level regulation
- Voltage monitoring circuits
Procurement Notes
Verify the specific suffix 'DBZR' corresponds to the SOT-23-3 surface-mount package and standard reel packaging configuration. Confirm that the 'A' grade designation aligns with the required 1% initial accuracy specifications for your design. Ensure compatibility with the specified operating temperature range of -40°C to +125°C before finalizing procurement orders.
Selection Notes
Select this component when designing isolated feedback circuits for 3V to 3.3V switching power supplies requiring low standby current. It serves as a direct upgrade to traditional TL431 devices where lower minimum operating voltage is critical. Consider the 80 mA cathode current limit for load driving requirements and ensure the SOT-23-3 footprint fits the PCB layout constraints.
Part Context
This device belongs to the TLVH431 family of high-performance shunt regulators designed for automotive and industrial applications. It improves upon legacy TL431 technology by offering lower minimum operating voltages and enhanced thermal performance. The part is distinct from the standard TLV431 series by its extended voltage capabilities and robustness for harsh environments.
Replacement Considerations
The TLV431AIDBZR is a functional equivalent with lower voltage ratings. For higher voltage requirements, the TLVH431BIDBZR offers increased cathode current. Verify pinout compatibility when substituting with non-Texas Instruments equivalents.
