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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 0.5% SOT89-3
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Bulk
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：1.24V
- Voltage - Output (Max)：18 V
- Current - Output：70 mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-243AA
- Supplier Device Package：SOT-89-3
- Grade：-
- Qualification：-
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Overview
The TLVH432BQPK is a low-voltage adjustable precision shunt regulator manufactured by Texas Instruments. It operates within a supply voltage range of up to 20 V and provides an adjustable output voltage from 1.24 V to 18 V. The device features an initial accuracy of 0.5% and a temperature coefficient of 138 PPM/°C. It supports a maximum shunt current of 70 mA and a minimum cathode current of 80 µA. Operating temperatures range from -40°C to +125°C. The component is housed in a SOT-89-3 package.
Feature Summary
- Provides adjustable precision voltage regulation with high initial accuracy
- Operates over an extended industrial temperature range
- Designed for low-voltage applications with wide input voltage tolerance
Applications
- Battery-powered equipment requiring precise voltage references
- Portable instrumentation circuits
- Power management systems needing stable shunt regulation
Procurement Notes
Verify the obsolete status of this specific part number before procurement planning. Confirm availability of qualified substitutes such as the TLVH432BCPK. Ensure design reviews account for potential supply chain discontinuations. Check manufacturer notifications for lifecycle changes. Validate that alternative components meet all original electrical specifications.
Selection Notes
Select this component only if the specific 0.5% initial accuracy and 70 mA current rating align with circuit requirements. Consider the SOT-89-3 package constraints for thermal and spatial limitations. Evaluate the need for adjustable output versus fixed reference options. Assess the impact of the 138 PPM/°C temperature coefficient on system stability. Verify compatibility with existing PCB footprints and assembly processes.
Part Context
This device belongs to the TLVH432 family of low-voltage adjustable precision shunt regulators. It serves as a cost-effective solution for voltage referencing in compact electronic designs. The family offers various accuracy grades and packaging options to suit different application needs. It integrates standard three-terminal shunt regulator functionality into a small surface-mount footprint.
Replacement Considerations
The TLVH432BQPK is listed as obsolete. The TLVH432BCPK is identified as an available substitute. Verify pinout compatibility and electrical parameter alignment between the obsolete and replacement parts.
