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Product Detailed Parameters
- Description：IC VREF SHUNT 1.24V SOT23-3
- Series：-
- Mfr：Nexperia USA Inc.
- Package：Tape & Reel (TR)
- Output Type：Adjustable
- Voltage - Output (Min/Fixed)：1.24V
- Voltage - Output (Max)：14 V
- Current - Output：70 mA
- Operating Temperature：-40°C ~ 125°C (TA)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：TO-236AB
- Grade：-
- Qualification：-
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Overview
The TLVH431NMQDBZR-QVL is a three-terminal adjustable precision shunt regulator from the Nexperia TLVH431N-Q family. It operates within a cathode-anode voltage range of Vref to 14 V and supports a sink current capability between 0.08 mA and 70 mA. The device features an A-Grade reference voltage tolerance of 1.0%, with a typical reference voltage of 1240 mV at 25 °C. It utilizes mirrored pinning in an SOT23 package, where Pin 1 is Cathode, Pin 2 is Reference, and Pin 3 is Anode. Qualified according to AEC-Q100 Grade 1, it functions across a temperature range of -40 °C to 125 °C.
Feature Summary
- Qualified for automotive applications under AEC-Q100 Grade 1 standards
- Mirrored pin configuration specific to MQDBZR package variants
- Low output noise with typical dynamic impedance of 0.1 Ω
- Programmable output voltage set by two external resistors
Applications
- Shunt regulator circuits
- Precision constant current sinks
- Isolated feedback loops for Switch Mode Power Supplies (SMPS)
- Precision current limiters
Procurement Notes
Verify that the ordering suffix matches the required pinning configuration, as the MQDBZR variant specifies mirrored pinning distinct from standard versions. Confirm the A-Grade tolerance requirement aligns with the 1.0% specification. Ensure the design accommodates the specified thermal resistance values for the target PCB mounting conditions. Cross-reference the marking code '8U%' to validate the component identity upon receipt.
Selection Notes
Select this component when automotive qualification and high-precision voltage referencing are required. The mirrored pinout necessitates specific PCB footprint adjustments compared to standard pinning configurations. Designers must account for the 14 V maximum cathode-anode voltage limit. Verify stability boundaries regarding load capacitance and equivalent series resistance for the intended operating temperature range.
Part Context
This part belongs to the TLVH431N-Q family of low-voltage adjustable precision shunt regulators manufactured by Nexperia. The family includes variants with normal and mirrored pinning, covering Standard-Grade (1.5%) and A-Grade (1.0%) tolerances. These devices serve as replacements for Zener diodes in on-board regulation and adjustable power supply applications.
Replacement Considerations
Direct substitutes within the same family include TLVH431NAQDBZR-Q, which shares the A-Grade tolerance but utilizes normal pinning instead of mirrored pinning. Other family members like TLVH431NACDBZR-Q offer identical electrical characteristics but differ in operating temperature range or pin configuration.
