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Product Detailed Parameters
- Description：IC VREF SHUNT ADJ 1% 5TSOP
- Series：-
- Mfr：NXP USA Inc.
- Package：Tape & Reel (TR)
- 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：SC-74A, SOT-753
- Supplier Device Package：5-TSOP
- Grade：-
- Qualification：-
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Overview
The TLVH431AQDBVR,115 is a low voltage three-terminal adjustable precision shunt regulator from NXP. It operates within a cathode-anode voltage range of 1 V to 18 V and supports a sink current capability from 0.08 mA to 70 mA. The device features an A-Grade reference voltage tolerance of 1%, with a typical reference voltage of 1240 mV at 25 °C. It is qualified to AEC-Q100 Grade 1 standards and functions reliably across an ambient temperature range of -40 °C to +125 °C.
Feature Summary
- AEC-Q100 Grade 1 automotive qualification for reliable operation in demanding environments
- Adjustable output voltage programmable between the reference voltage and 18 V using external resistors
- Low dynamic cathode-anode impedance providing stable regulation performance
- Active output circuitry ensures sharp turn-on characteristics suitable for replacing Zener diodes
Applications
- Shunt regulator circuits
- Precision constant current sinks
- Isolated feedback loops for Switch Mode Power Supplies (SMPS)
- Precision current limiters
Procurement Notes
Verify the specific ordering suffix
Selection Notes
Select this component when an automotive-grade shunt regulator with precise voltage referencing is required. The A-Grade tolerance offers tighter accuracy than standard grades. Ensure the application operates within the specified -40 °C to +125 °C temperature range and utilizes the SOT753 package footprint compatible with SC-74A layouts.
Part Context
This part belongs to the TLVH431 family of low voltage adjustable precision shunt regulators manufactured by NXP Semiconductors. The family includes Standard, A-Grade, and D-Grade variants with different tolerances and temperature ranges. The TLVH431AQDBVR specifically denotes the A-Grade version housed in the SOT753 surface-mount package.
Replacement Considerations
Compatible substitutes within the same family include TLVH431QDBVR (Standard Grade) and TLVH431DQDBVR (D-Grade). These parts share identical pinning and package dimensions but differ in reference voltage tolerance and thermal stability specifications.
FAQ
What is the minimum cathode current required for proper regulation?
The minimum cathode current (IK(min)) is typically 580 µA when the cathode-anode voltage equals the reference voltage.
How does the reference voltage vary with temperature?
For the TLVH431AQDBVR, the reference voltage variation over the -40 °C to +125 °C range is specified as -4 mV to +31 mV relative to the nominal value.
