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NXP Semiconductors TLVH431AQDBZR,215
- Part No.:
- TLVH431AQDBZR,215
- Manufacturer:
- NXP Semiconductors
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TLVH431AQDBZR,215.pdf
- Description:
- IC VREF SHUNT ADJ 1% TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,647
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Product details
Overview
TLVH431AQDBZR,215 from NXP Semiconductors is an A-grade (±1 %) adjustable precision shunt regulator in SOT23 package, delivering 1.24 V reference voltage with 4 mV typical temperature drift over −40 °C to +125 °C and 0.1 Ω dynamic impedance. It sinks 0.08–70 mA cathode current and supports programmable output voltages from 1.24 V to 18 V via two external resistors-used in automotive-grade isolated SMPS feedback loops.
For engineers reviewing the TLVH431AQDBZR,215 datasheet, TLVH431AQDBZR,215 pinout, TLVH431AQDBZR,215 application, or TLVH431AQDBZR,215 equivalent, this page provides verified functional context, thermal performance data, AEC-Q100 Grade 1 qualification status, and real-world design implications for precision shunt regulation in high-reliability power systems.
Technical Context
The TLVH431AQDBZR,215 implements a bandgap-based reference core with active output stage enabling sharp turn-on and low-output-impedance regulation. Its three-terminal architecture (REF, CATHODE, ANODE) operates as a voltage-controlled current sink where cathode current scales with the voltage difference between REF and internal 1.24 V threshold.
Designed for automotive applications, it features AEC-Q100 Grade 1 qualification (−40 °C to +125 °C), 4 kV HBM ESD rating, and stable operation across 0.1 mA–70 mA cathode current range. Output voltage programming relies solely on external resistor dividers without internal trimming-enabling flexible, cost-effective voltage setpoints in feedback networks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.240 V ±1 % at 10 mA cathode current and 25 °C - defines minimum programmable output (1.24 V) and sets accuracy baseline for all higher outputs. |
| Cathode-Anode Voltage Range | 1.24 V to 18 V - enables direct replacement of Zener diodes in wide-range adjustable supplies and feedback circuits. |
| Cathode Current Range | 0.08 mA to 70 mA - supports low-power biasing and high-current shunt regulation without external amplification. |
| Dynamic Impedance | 0.10 Ω typical - ensures minimal output voltage variation under load transients, critical for stable SMPS feedback. |
| Temperature Drift | 4 mV max over −40 °C to +125 °C - guarantees <0.33 % reference stability across full automotive ambient range. |
| AEC-Q100 Grade | Grade 1 qualified - validated for automotive use with guaranteed operation from −40 °C to +125 °C junction temperature. |
| Package | SOT23 (TO-236AB) - surface-mount 3-pin package with standard footprint, compatible with automated assembly and reflow processes. |
Pinout & Package
SOT23 plastic surface-mounted package (TO-236AB), 3-lead, normal pinning configuration per Table 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - REF | Reference input | High-impedance node sensing external resistor divider; sets regulated output voltage via VOUT = VREF(1 + R1/R2). |
| 2 - CATHODE | Current sink output | Active sink terminal carrying regulated cathode current; connects to supply rail or optocoupler anode in isolated feedback designs. |
| 3 - ANODE | Ground/reference return | Low-impedance return path; pin 1 and 2 may be connected to anode for improved thermal performance in high-power dissipation cases. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output voltage | Programmable from 1.24 V to 18 V using only two external resistors-eliminates need for multiple fixed-voltage regulators. |
| A-grade reference tolerance | ±1 % at 25 °C ensures tighter initial accuracy than standard-grade parts, reducing calibration overhead in precision power supplies. |
| Low dynamic impedance | 0.10 Ω typical maintains stable regulation during fast load steps-critical for maintaining feedback loop integrity in SMPS. |
| Automotive qualification | AEC-Q100 Grade 1 certified for operation from −40 °C to +125 °C ambient-meets requirements for engine control, ADAS, and body electronics. |
| Low reference current | 0.19–0.30 µA typical minimizes divider resistor power loss and enables high-resistance feedback networks for ultra-low quiescent current designs. |
Applications
| Automotive Isolated SMPS Feedback | Precision Current Sink |
|---|---|
|
Use Scenario: Secondary-side voltage sensing in flyback or forward converters with optocoupler-based isolation. IC Role / Device Role / Timing Role: Shunt regulator providing precise reference to optocoupler LED, enabling accurate primary-side regulation. Use Value: Enables ±1 % output voltage regulation across temperature and line variations without secondary-side controller IC. |
Use Scenario: Constant-current source for LED biasing or sensor excitation in automotive lighting or analog front-ends. IC Role / Device Role / Timing Role: Adjustable shunt element setting current through external sense resistor (IOUT = VREF/RS). Use Value: Delivers stable 0.08–70 mA current with <0.33 % drift over −40 °C to +125 °C-no op-amp or external references required. |
| On-Board Precision Shunt Regulator | Programmable Overvoltage Clamp |
|
Use Scenario: Local 3.3 V or 5 V regulation for microcontroller I/O or sensor interfaces in space-constrained automotive modules. IC Role / Device Role / Timing Role: Three-terminal shunt regulator replacing discrete Zener + transistor combinations. Use Value: Reduces BOM count and PCB area while improving thermal stability and long-term drift vs. Zener solutions. |
Use Scenario: Protecting downstream circuitry from transient overvoltage events in 12 V automotive systems. IC Role / Device Role / Timing Role: Fast-turn-on shunt clamp activated when sensed voltage exceeds programmed threshold. Use Value: Responds within microseconds with 0.1 Ω impedance to limit voltage overshoot-superior to TVS diodes for sustained overvoltage conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431QDBZR,215 | Standard grade (±1.5 %) reference tolerance; same SOT23 package and −40 °C to +125 °C rating. | Accepts wider output voltage variation; suitable where ±1 % accuracy is not required. | Select when cost sensitivity outweighs tight reference accuracy needs in non-critical feedback paths. |
| TLVH431DQDBZR,215 | D-grade (±0.75 %) tolerance; identical thermal and electrical specs otherwise. | Delivers highest initial accuracy in the family-used where factory calibration must be minimized. | Choose for high-end ADAS or battery management systems requiring lowest possible reference error budget. |
Compared with TLVH431AQDBZR,215, TLVH431QDBZR,215 trades ±1 % accuracy for lower unit cost in less demanding applications, while TLVH431DQDBZR,215 adds ±0.75 % tolerance for tighter closed-loop control-both retain identical pinout, thermal behavior, and AEC-Q100 Grade 1 qualification.
Availability
TLVH431AQDBZR,215 is available at Aetrix Electronics and suitable for automotive power supply design, isolated feedback implementation, and precision current regulation requiring stable component supply and AEC-Q100 compliance.
Supply support for TLVH431AQDBZR,215 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
NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in automotive-grade analog and power management ICs.
The TLVH431 family was designed specifically for high-reliability shunt regulation in automotive power systems-emphasizing thermal stability, AEC-Q100 compliance, and robustness in harsh environments.
FAQ
What is the reference voltage tolerance of TLVH431AQDBZR,215?
The TLVH431AQDBZR,215 has an A-grade reference voltage tolerance of ±1 % at 25 °C, with a nominal VREF of 1.240 V. This tolerance holds across its specified operating temperature range of −40 °C to +125 °C, making TLVH431AQDBZR,215 suitable for automotive applications requiring tighter initial accuracy than standard-grade variants.
Does TLVH431AQDBZR,215 require external components to function?
Yes, TLVH431AQDBZR,215 requires two external resistors to set the output voltage (VOUT = VREF(1 + R1/R2)) and typically a bypass capacitor near the REF pin for noise suppression. No additional active components are needed-TLVH431AQDBZR,215 operates as a complete 3-terminal shunt regulator with built-in reference and output stage.
Is TLVH431AQDBZR,215 qualified for automotive use?
Yes, TLVH431AQDBZR,215 is AEC-Q100 qualified to Grade 1 (−40 °C to +125 °C ambient), with full characterization across temperature, voltage, and lifetime stress tests. This qualification confirms TLVH431AQDBZR,215 meets automotive reliability standards for use in engine control units, body electronics, and ADAS subsystems.
What is the maximum cathode current supported by TLVH431AQDBZR,215?
The TLVH431AQDBZR,215 supports a maximum cathode current of 70 mA under recommended operating conditions. At elevated ambient temperatures or with limited PCB copper area, derating applies-e.g., 390 mW total power dissipation at 25 °C ambient on FR4 PCB limits usable current depending on voltage drop across the device.
How does TLVH431AQDBZR,215 differ from TLVH431CDBZR,215?
TLVH431AQDBZR,215 uses A-grade (±1 %) reference tolerance and shares the same SOT23 package and −40 °C to +125 °C temperature range as TLVH431CDBZR,215-but TLVH431CDBZR,215 is standard grade (±1.5 %) and rated only from 0 °C to +70 °C. TLVH431AQDBZR,215 thus offers tighter accuracy and broader automotive temperature capability.
TLVH431AQDBZR,215 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Shunt
- Output Type:
- Adjustable
- Voltage - Output (Min/Fixed):
- 1.24V
- Voltage - Output (Max):
- 18 V
- Current - Output:
- 70 mA
- Tolerance:
- ±1%
- 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 (TO-236AB)
TLVH431AQDBZR,215 FAQ
1.How can I place an order for TLVH431AQDBZR,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLVH431AQDBZR,215 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 TLVH431AQDBZR,215 reliable?
The price and inventory of TLVH431AQDBZR,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLVH431AQDBZR,215 is usually 5 days.
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Once your TLVH431AQDBZR,215 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 TLVH431AQDBZR,215?
For technical support, including TLVH431AQDBZR,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLVH431AQDBZR,215 requirements.
6.How does Aetrix verify that TLVH431AQDBZR,215 is sourced from the original manufacturer or authorized distributors?
All TLVH431AQDBZR,215 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 TLVH431AQDBZR,215 meets industry standards.
7.What is the process for return or replacement of TLVH431AQDBZR,215?
All TLVH431AQDBZR,215 units undergo pre-shipment inspection (PSI). If there is an issue with TLVH431AQDBZR,215, 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 TLVH431AQDBZR,215 part is unused and in its original packaging.
Return procedure for TLVH431AQDBZR,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLVH431AQDBZR,215 Tags
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TL431AIDBZR
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LM4040DIM3X-2.5/NOPB
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AZ431LANTR-G1
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