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Nexperia USA Inc. TLVH431NAMQDBZR-VL
- Part No.:
- TLVH431NAMQDBZR-VL
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TLVH431NAMQDBZR-VL.pdf
- Description:
- IC VREF SHUNT 1.24V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,062
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Product details
Overview
TLVH431NAMQDBZR-VL from Nexperia is an A-grade adjustable precision shunt regulator in SOT23 package with mirrored pinning (K-REF-A), 1.0% reference voltage tolerance (1228–1252 mV at 10 mA, 25 °C), −40 °C to +125 °C operating range, and 0.1 Ω typical dynamic cathode-anode impedance - used for isolated feedback in automotive-grade SMPS designs.
For engineers reviewing the TLVH431NAMQDBZR-VL datasheet, TLVH431NAMQDBZR-VL pinout, TLVH431NAMQDBZR-VL application, or TLVH431NAMQDBZR-VL equivalent, this page delivers verified pin mapping, thermal derating curves, cathode current limits (0.08–70 mA), reference current specs (0.19–0.30 μA), and AEC-Q100 Grade 1 qualification status.
Technical Context
The TLVH431NAMQDBZR-VL implements a three-terminal shunt regulator architecture with internal bandgap reference and active output stage, enabling sharp turn-on characteristics and low output noise. Its mirrored pinning (Pin 1 = K, Pin 2 = REF, Pin 3 = A) distinguishes it from normal-pinned variants and ensures correct PCB layout in high-reliability feedback paths.
It operates as a programmable voltage reference sink across 1.24 V to 14 V via two external resistors, with dynamic impedance ≤0.15 Ω (f < 1 kHz) and reference voltage drift of −2.2 mV to +10 mV over −40 °C to +125 °C - meeting stringent automotive transient regulation requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference voltage | 1228–1252 mV at 10 mA, 25 °C - defines minimum stable output setpoint in feedback networks |
| Cathode current range | 0.08–70 mA - supports both low-power biasing and high-current shunt regulation |
| Output impedance | 0.10–0.15 Ω (f < 1 kHz) - ensures minimal voltage deviation under dynamic load steps |
| Temp range | −40 °C to +125 °C - qualified for under-hood automotive environments |
| Ref current | 0.19–0.30 μA - enables high-resistance resistor networks without significant error contribution |
| AEC-Q100 grade | Grade 1 (−40 °C to +125 °C) - certified for automotive powertrain and body electronics |
| Package | SOT23 (TO-236AB) - surface-mount compatible with standard reflow profiles and 0.6 mm solder land pitch |
Pinout & Package
SOT23 (TO-236AB) package, 3-pin plastic surface-mounted device with 1.3 mm max height and 2.8 mm × 1.4 mm footprint per Figure 29 and Figure 30.
| 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 feedback divider - high-impedance node requiring clean routing away from noise sources |
| 3 | A (anode) | Return path to ground or low-side reference - must be low-inductance for stability with ≥1 nF load capacitance |
Key Features
| Feature | Design Value |
|---|---|
| Programmable output voltage | 1.24 V to 14 V via R1/R2 divider - eliminates need for multiple fixed-voltage references |
| A-grade reference tolerance | ±1.0 % at 25 °C - reduces output voltage error budget in closed-loop SMPS designs |
| Low dynamic impedance | 0.1 Ω typical - maintains regulation during fast load transients without external compensation |
| Mirrored pinning | Pin 1 = K, Pin 2 = REF, Pin 3 = A - prevents layout errors when replacing TLVH431NMQDBZR-Q or similar mirrored variants |
| AEC-Q100 qualification | Grade 1 stress-tested - enables drop-in use in automotive ADAS camera modules and ECU power supplies |
Applications
| Automotive SMPS Feedback | Precision Current Sink |
|---|---|
Use Scenario: Isolated DC-DC converter in engine control unit supplying 5 V to microcontroller from 12 V battery rail. IC Role / Device Role / Timing Role: Shunt regulator in optocoupler-coupled secondary-side feedback loop, setting error amplifier reference. Use Value: Enables ±1% output regulation across temperature and line variations while meeting AEC-Q100 Grade 1 reliability requirements. |
Use Scenario: LED driver for adaptive front lighting system requiring stable 350 mA current regardless of forward voltage shift. IC Role / Device Role / Timing Role: Precision constant-current sink controlling MOSFET gate via op-amp feedback loop. Use Value: Delivers <1% current drift from −40 °C to +125 °C using only two external resistors and no trimming. |
| On-Board Voltage Clamp | Programmable Threshold Detector |
Use Scenario: Overvoltage protection circuit on 3.3 V I/O rail of infotainment head unit. IC Role / Device Role / Timing Role: Adjustable shunt clamp activated above 3.6 V to divert excess current before LDO fails. Use Value: Replaces Zener diode with tighter tolerance (±1%), lower impedance (0.1 Ω), and guaranteed operation to +125 °C. |
Use Scenario: Battery voltage monitor in telematics control unit triggering low-battery warning at 11.8 V. IC Role / Device Role / Timing Role: Reference element in comparator-based threshold detection circuit with hysteresis. Use Value: Provides stable 1.24 V reference scaled to 11.8 V via resistor divider, minimizing drift-induced false triggers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable shunt regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431NAQDBZR-Q | Normal pinning (REF-K-A), same A-grade tolerance and temp range | Requires PCB layout revision; incompatible with mirrored-footprint boards | Select only if redesigning layout or sourcing legacy-compatible footprints |
| TL431ACDR | 3% reference tolerance, −40 °C to +85 °C, SO-8 package, no AEC-Q100 rating | Not qualified for automotive under-hood use; higher voltage drift above 85 °C | Acceptable for industrial/commercial power supplies where Grade 1 qualification is not required |
Compared with TLVH431NAQDBZR-Q, TLVH431NAMQDBZR-VL saves board space via identical SOT23 footprint but mandates mirrored routing; versus TL431ACDR, it delivers 3× tighter reference tolerance, +40 °C extended junction temperature, and formal automotive qualification - critical for safety-critical power domains.
Availability
TLVH431NAMQDBZR-VL is available at Aetrix Electronics and suitable for automotive SMPS feedback, precision current sinking, on-board voltage clamping, and programmable threshold detection requiring stable component supply across extended temperature ranges.
Supply support for TLVH431NAMQDBZR-VL 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 delivering high-performance logic, discrete, and MOSFET solutions optimized for efficiency, reliability, and miniaturization in automotive and industrial systems.
The TLVH431N-Q family targets automotive-grade precision voltage regulation, designed specifically to replace Zener diodes in AEC-Q100-compliant feedback, current limiting, and clamping circuits.
FAQ
What is the pin configuration of TLVH431NAMQDBZR-VL?
This device uses mirrored pinning in SOT23: Pin 1 is cathode (K), Pin 2 is reference (REF), and Pin 3 is anode (A). This differs from normal-pinned variants like TLVH431NAQDBZR-Q (REF-K-A) and must be verified in layout to avoid functional failure.
Does TLVH431NAMQDBZR-VL require external compensation for stability?
No external compensation is needed for basic shunt regulation, but stability depends on load capacitance placement: ≥1 nF ceramic capacitor must be placed within 2 mm of the anode pin, with ESR < 1 Ω, per Figure 20 test conditions and worst-case thermal boundaries.
How does the A-grade tolerance impact SMPS output accuracy?
With ±1.0% reference tolerance (vs. ±1.5% for standard grade), TLVH431NAMQDBZR-VL reduces the dominant error source in feedback dividers - enabling ±1.2% total output tolerance in a 5 V SMPS design, assuming 0.1% resistor matching and 0.5% optocoupler CTR variation.
Can TLVH431NAMQDBZR-VL replace TL431 in existing designs?
Direct replacement is possible only if the PCB uses mirrored pinning and supports −40 °C to +125 °C operation. Electrical compatibility exists (same Vref range, IK range), but TL431 lacks AEC-Q100 qualification and exhibits higher thermal drift above 85 °C - requiring validation for automotive use.
TLVH431NAMQDBZR-VL 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:
- TO-236AB
TLVH431NAMQDBZR-VL FAQ
1.How can I place an order for TLVH431NAMQDBZR-VL through Aetrix?
Please submit a Request for Quotation (RFQ) for TLVH431NAMQDBZR-VL 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 TLVH431NAMQDBZR-VL reliable?
The price and inventory of TLVH431NAMQDBZR-VL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLVH431NAMQDBZR-VL is usually 5 days.
3.What payment methods are accepted for TLVH431NAMQDBZR-VL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLVH431NAMQDBZR-VL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLVH431NAMQDBZR-VL?
TLVH431NAMQDBZR-VL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLVH431NAMQDBZR-VL 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 TLVH431NAMQDBZR-VL?
For technical support, including TLVH431NAMQDBZR-VL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLVH431NAMQDBZR-VL requirements.
6.How does Aetrix verify that TLVH431NAMQDBZR-VL is sourced from the original manufacturer or authorized distributors?
All TLVH431NAMQDBZR-VL 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 TLVH431NAMQDBZR-VL meets industry standards.
7.What is the process for return or replacement of TLVH431NAMQDBZR-VL?
All TLVH431NAMQDBZR-VL units undergo pre-shipment inspection (PSI). If there is an issue with TLVH431NAMQDBZR-VL, 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 TLVH431NAMQDBZR-VL part is unused and in its original packaging.
Return procedure for TLVH431NAMQDBZR-VL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLVH431NAMQDBZR-VL Tags
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TL431AIDBZR
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TL431BQDBZR
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AN431AN-ATRG1
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LM4040CYM3-2.5-TR
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LM4040CYM3-4.1-TR
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AZ431LBNTR-G1
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LM4040D20IDBZR
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LM4041DIM3-ADJ/NOPB
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LM4040DIM3X-2.5/NOPB
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LM4040DIM3-2.5/NOPB
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AZ431LANTR-G1
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