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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Reference

Nexperia USA Inc. TLVH431NMQDBZR-QVL

Name: TLVH431NMQDBZR-QVL
Brand: Nexperia USA Inc.
SKU: TLVH431NMQDBZR-QVL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TLVH431NMQDBZR-QVL

Manufacturer:: Nexperia USA Inc.

Category:: Voltage Reference

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: TLVH431NMQDBZR-QVL.pdf

Description:: IC VREF SHUNT 1.24V SOT23-3

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Product details

Overview

TLVH431NMQDBZR-Q from Nexperia is an AEC-Q100 Grade 1 qualified adjustable precision shunt regulator in SOT23 package with mirrored pinning (K-REF-A), 1.24 V reference voltage, ±1.5 % initial tolerance at 25 °C, and -40 °C to +125 °C operating range-used for isolated feedback in automotive SMPS and precision current sinking.

For engineers reviewing the TLVH431NMQDBZR-Q datasheet, TLVH431NMQDBZR-Q pinout, TLVH431NMQDBZR-Q application, or TLVH431NMQDBZR-Q equivalent, this page delivers verified pin mapping, thermal derating curves, cathode-anode impedance (0.1 Ω typ), reference current (0.19–0.30 μA), and automotive-grade stability data per IEC 60134 limiting values.

Technical Context

This device implements a three-terminal shunt topology where output voltage is set externally via two resistors (V_OUT = V_REF × (1 + R1/R2) + I_REF × R1), enabling programmable regulation from 1.24 V to 14 V. Its active output stage delivers sharp turn-on characteristics and low dynamic impedance (0.10–0.15 Ω).

Designed for automotive environments, it features AEC-Q100 Grade 1 qualification, junction temperature rating up to 150 °C, and stable operation across -40 °C to +125 °C ambient with ≤10 mV reference drift over full range. ESD robustness includes 4 kV HBM and 200 V MM ratings.

Key Specifications

Parameter	Value and Actual Design Meaning
V_REF	1240 mV typical; sets minimum regulation threshold and defines resistor-divider scaling baseline
Reference Tolerance	±1.5 % at 25 °C; determines absolute output accuracy before resistor tolerance and tempco contributions
I_K Range	0.08 mA to 70 mA sink capability; supports light-load biasing and high-current shunt regulation
Z_KA	0.10–0.15 Ω dynamic cathode-anode impedance; ensures tight regulation under transient load changes
T_A Range	-40 °C to +125 °C; enables use in engine bay, ADAS, and powertrain control units without derating
P_TOT (FR4)	350 mW at 25 °C ambient; defines maximum continuous dissipation on standard PCB layout
ΔV_REF/ΔV_KA	-0.8 to -2.7 mV/V; quantifies reference voltage sensitivity to cathode-anode voltage variation

Pinout & Package

SOT23 (TO-236AB) plastic surface-mounted package, 3-lead, 1.3 mm × 2.9 mm footprint, 0.95 mm height, with mirrored pinning configuration (K-REF-A).

Pin/Terminal	Circuit Role	Design Meaning
1	K (cathode)	Main current sink terminal; connects to regulated rail or SMPS transformer secondary
2	REF (reference)	Sense input for internal bandgap; ties to resistor divider midpoint for voltage setting
3	A (anode)	Return path to ground or low-side reference; completes shunt current loop

Key Features

Feature	Design Value
Adjustable Output Voltage	Programmable from 1.24 V to 14 V using two external resistors-enables single BOM for multiple output rails
Low Dynamic Impedance	0.10 Ω typical; maintains <±10 mV regulation error during 10–100 mA load transients
Automotive Qualification	AEC-Q100 Grade 1 compliant (-40 °C to +125 °C); qualified for safety-critical power supply feedback paths
Low Reference Current	0.19–0.30 μA typical; minimizes resistor-divider power loss and improves high-voltage divider accuracy
Sharp Turn-On Characteristic	Active output stage eliminates Zener knee uncertainty; enables precise current limiting below 100 μA

Applications

Automotive SMPS Feedback

Precision Current Sink

Use Scenario: Isolated DC-DC converter in ADAS camera module requiring stable 5 V output under battery voltage fluctuations (9–16 V).

IC Role / Device Role / Timing Role: Shunt regulator in optocoupler feedback loop, sensing secondary-side voltage and adjusting primary-side duty cycle.

Use Value: Enables ±1.5 % output regulation across -40 °C to +125 °C ambient with no external compensation required.

Use Scenario: LED driver for automotive interior lighting with constant 20 mA output independent of forward voltage variation.

IC Role / Device Role / Timing Role: Precision current sink configured with REF tied to cathode and anode grounded through sense resistor.

Use Value: Delivers 20 mA ±0.3 mA over temperature due to 0.1 Ω dynamic impedance and sub-μA reference current.

On-Board Voltage Clamp

Programmable Undervoltage Lockout

Use Scenario: 12 V rail protection in infotainment head unit against load dump spikes up to 14 V.

IC Role / Device Role / Timing Role: Shunt clamp activated when input exceeds 13.5 V, diverting excess current to ground via external series resistor.

Use Value: Clamps within 100 ns with <50 mV overshoot, leveraging sharp turn-on and 70 mA sink capacity.

Use Scenario: Microcontroller reset circuit triggering at 2.7 V during cold-cranking (battery dips to 6 V).

IC Role / Device Role / Timing Role: Adjustable threshold detector using REF as comparator input and cathode connected to enable logic line.

Use Value: Achieves 2.7 V trip point with ±15 mV accuracy over -40 °C to +125 °C using 1 % resistor divider.

Equivalent & Alternatives

The following parts are listed as comparable options for similar adjustable shunt regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLVH431NQDBZR-Q	Normal pinning (REF-K-A); same 1.5 % tolerance and -40 °C to +125 °C range	Requires PCB layout revision; incompatible with mirrored footprint	Select when existing board uses standard SOT23 shunt regulator orientation
TLVH431NAQDBZR-Q	A-Grade (1.0 % V_REF tolerance); otherwise identical pinout and thermal specs	Better initial accuracy for high-precision feedback loops; higher cost	Choose for SMPS requiring <±1 % output tolerance over production lot variance

Compared with TLVH431NMQDBZR-Q, TLVH431NQDBZR-Q requires mechanical redesign but retains identical electrical behavior, while TLVH431NAQDBZR-Q trades tighter reference tolerance for higher unit cost-making the MQDBZR variant optimal for cost-sensitive automotive shunt regulation where 1.5 % tolerance suffices.

Availability

TLVH431NMQDBZR-Q is available at Aetrix Electronics and suitable for automotive power supplies, isolated feedback circuits, and precision current-limiting applications requiring stable component supply across extended temperature ranges and AEC-Q100 compliance.

Supply support for TLVH431NMQDBZR-Q includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on high-volume, high-reliability discrete and analog components, with leadership in automotive-qualified logic, MOSFETs, and precision analog devices.

The TLVH431N-Q family targets automotive and industrial power management systems requiring AEC-Q100-compliant, adjustable shunt regulation with minimal external components and guaranteed thermal stability.

FAQ

What is the pin configuration of TLVH431NMQDBZR-Q?

TLVH431NMQDBZR-Q uses mirrored SOT23 pinning: Pin 1 = K (cathode), Pin 2 = REF (reference), Pin 3 = A (anode). This differs from standard TLVH431N variants (REF-K-A) and must be accounted for in PCB layout and schematic symbol creation.

Can TLVH431NMQDBZR-Q replace a Zener diode in a 12 V regulator?

Yes-it replaces Zener diodes in shunt regulators by providing programmable 1.24–14 V output with 0.1 Ω dynamic impedance, sharp turn-on, and ±1.5 % reference accuracy. Unlike Zeners, it maintains regulation down to 80 μA cathode current and exhibits lower temperature drift.

What is the maximum power dissipation at 85 °C ambient?

At 85 °C ambient on a standard FR4 PCB, TLVH431NMQDBZR-Q's power dissipation is derated to approximately 220 mW, calculated from the 350 mW @ 25 °C rating and the 360 K/W junction-to-ambient thermal resistance shown in Figure 2, curve (1).

Is external capacitor stabilization required for TLVH431NMQDBZR-Q?

Yes-stability depends on load capacitance and ESR. Figure 20 shows stable operation requires ≥10 nF CL at 25 °C with 150 Ω series resistance; larger capacitors (≥100 nF) improve phase margin in noisy automotive environments, especially above 85 °C.

TLVH431NMQDBZR-QVL Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Package/Case:: TO-236-3, SC-59, SOT-23-3

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Reference Type:: Shunt

Output Type:: Adjustable

Voltage - Output (Min/Fixed):: 1.24V

Voltage - Output (Max):: 14 V

Current - Output:: 70 mA

Tolerance:: ±1.5%

Temperature Coefficient:: -

Noise - 0.1Hz to 10Hz:: -

Noise - 10Hz to 10kHz:: -

Voltage - Input:: -

Current - Supply:: -

Current - Cathode:: 80 µA

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3 (TO-236)

TLVH431NMQDBZR-QVL FAQ

1.How can I place an order for TLVH431NMQDBZR-QVL through Aetrix?

Please submit a Request for Quotation (RFQ) for TLVH431NMQDBZR-QVL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TLVH431NMQDBZR-QVL reliable?

The price and inventory of TLVH431NMQDBZR-QVL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLVH431NMQDBZR-QVL is usually 5 days.

3.What payment methods are accepted for TLVH431NMQDBZR-QVL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLVH431NMQDBZR-QVL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TLVH431NMQDBZR-QVL?

TLVH431NMQDBZR-QVL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TLVH431NMQDBZR-QVL order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TLVH431NMQDBZR-QVL?

For technical support, including TLVH431NMQDBZR-QVL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLVH431NMQDBZR-QVL requirements.

6.How does Aetrix verify that TLVH431NMQDBZR-QVL is sourced from the original manufacturer or authorized distributors?

All TLVH431NMQDBZR-QVL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TLVH431NMQDBZR-QVL meets industry standards.

7.What is the process for return or replacement of TLVH431NMQDBZR-QVL?

All TLVH431NMQDBZR-QVL units undergo pre-shipment inspection (PSI). If there is an issue with TLVH431NMQDBZR-QVL, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TLVH431NMQDBZR-QVL part is unused and in its original packaging.

Return procedure for TLVH431NMQDBZR-QVL:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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