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NXP Semiconductors TLVH431QDBZR,215
- Part No.:
- TLVH431QDBZR,215
- Manufacturer:
- NXP Semiconductors
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TLVH431QDBZR,215.pdf
- Description:
- IC VREF SHUNT ADJ 1.5% TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,984
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Product details
Overview
TLVH431QDBZR,215 from NXP Semiconductors is a low-voltage, three-terminal adjustable shunt regulator with 1.24 V reference voltage, ±0.75 % initial tolerance (D-grade), AEC-Q100 Grade 1 qualification, and operation from −40 °C to +125 °C - used in isolated SMPS feedback loops, precision current sinks, and automotive voltage regulation.
For engineers reviewing the TLVH431QDBZR,215 datasheet, TLVH431QDBZR,215 pinout, TLVH431QDBZR,215 application, or TLVH431QDBZR,215 equivalent, this page delivers verified electrical specs, SOT23 pin mapping, thermal derating curves, cathode-anode impedance behavior, and automotive-grade stability data directly applicable to production design validation.
Technical Context
The TLVH431QDBZR,215 implements a precision bandgap reference and high-gain transconductance amplifier driving an NPN output stage, enabling sharp turn-on and stable regulation across 1.24 V–18 V via two external resistors. Its internal architecture supports low-noise operation and maintains <4 mV reference drift over −40 °C to +125 °C.
Designed for automotive environments, it features 4 kV HBM ESD rating, 20 V absolute maximum cathode-anode voltage, and sink current capability from 80 µA to 70 mA. The device operates with typical dynamic impedance of 0.1 Ω and reference current under 0.3 µA at 10 mA cathode load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage (Vref) | 1.240 V nominal, ±0.75 % initial tolerance (D-grade) - ensures tight output setpoint accuracy without trimming. |
| Cathode-Anode Voltage Range | 1.24 V to 18 V - enables programmable regulation across wide supply rails using R1/R2 divider network. |
| Sink Current Range | 0.08 mA to 70 mA - supports direct shunt regulation and active current limiting in power control stages. |
| Temperature Range | −40 °C to +125 °C - qualified for under-hood automotive applications and industrial high-temp environments. |
| Dynamic Impedance (ZKA) | 0.10 Ω typical (f < 1 kHz) - provides low-output-impedance regulation critical for loop stability in SMPS feedback. |
| Reference Voltage Drift | 4 mV max over full temperature range - guarantees minimal output variation in thermally demanding systems. |
| AEC-Q100 Grade | Grade 1 (−40 °C to +125 °C) - validated for automotive powertrain, body electronics, and ADAS subsystems. |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mounted package, 3-lead, normal pinning configuration per Table 5 - optimized for space-constrained PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - REF | Reference input | High-impedance node sensing voltage divider output; sets regulation point with <0.3 µA bias current. |
| 2 - K (Cathode) | Cathode terminal | Current-sink output node; connects to regulated rail or optocoupler LED anode in isolated feedback designs. |
| 3 - A (Anode) | Anode terminal | Return path to ground or low-side reference; thermal pad connection improves power dissipation margin. |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output voltage | Programmable from 1.24 V to 18 V using two external resistors - eliminates need for multiple fixed-voltage regulators. |
| Low output noise & impedance | 0.1 Ω typical ZKA and low-noise architecture - minimizes ripple injection into sensitive analog or feedback paths. |
| Automotive qualification | AEC-Q100 Grade 1 compliance - ensures reliability in automotive power management and safety-critical subsystems. |
| Sharp turn-on characteristic | Active output circuitry enables fast, clean regulation onset - improves transient response vs. Zener diodes in on-board supplies. |
| Thermal stability | ≤4 mV reference drift over −40 °C to +125 °C - maintains accuracy without external compensation in wide-temperature deployments. |
Applications
| Shunt Regulator | Precision Current Limiter |
|---|---|
|
Use Scenario: Stabilizing intermediate rail in automotive infotainment power tree where input varies from 9 V to 16 V. IC Role / Device Role / Timing Role: Three-terminal shunt regulator sinking excess current to maintain precise 5.0 V output. Use Value: Replaces discrete Zener + transistor solution with 0.75 % initial accuracy and guaranteed −40 °C to +125 °C operation. |
Use Scenario: Limiting inrush current during hot-swap insertion of CAN transceiver modules in commercial vehicle ECUs. IC Role / Device Role / Timing Role: Precision constant-current sink controlling gate drive of series pass MOSFET. Use Value: Delivers 120 mA limit with <±1 % error over temperature, eliminating calibration and reducing BOM count. |
| Isolated SMPS Feedback | Precision Constant Current Sink |
|
Use Scenario: Secondary-side voltage sensing in flyback converter powering ADAS camera module (3.3 V @ 1 A). IC Role / Device Role / Timing Role: Shunt regulator driving optocoupler LED to close isolation barrier feedback loop. Use Value: Enables <1 % output regulation accuracy across line/load/temperature with no secondary-side LDO required. |
Use Scenario: Biasing laser diode in automotive head-up display (HUD) projector with stable 85 mA drive current. IC Role / Device Role / Timing Role: Two-resistor-configured constant current sink referenced to internal 1.24 V bandgap. Use Value: Achieves <±0.5 % current accuracy over −40 °C to +105 °C without external sense resistor or op-amp. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431AQDBZR | A-grade (±1 % Vref tolerance), same SOT23 package and −40 °C to +125 °C range | Suitable where tighter initial accuracy is needed but D-grade stability not required | Select when ±1 % tolerance suffices and cost sensitivity favors A-grade over D-grade. |
| TLVH431QDBVR | SOT753 (5-pin) package with NC pins; identical electrical specs and AEC-Q100 Grade 1 rating | Used where board layout requires larger footprint or thermal relief via extra pads | Choose only if SOT753 mechanical constraints or thermal pad routing justify package change. |
Compared with TLVH431AQDBZR, the TLVH431QDBZR,215 offers tighter ±0.75 % reference tolerance for higher-accuracy regulation, while TLVH431QDBVR provides identical performance in a 5-pin SOT753 package-enabling enhanced thermal management but requiring PCB redesign.
Availability
TLVH431QDBZR,215 is available at Aetrix Electronics and suitable for automotive power management, isolated DC-DC feedback, and precision current control applications requiring stable component supply across extended temperature ranges.
Supply support for TLVH431QDBZR,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 markets, with leadership in automotive-grade analog and power management ICs.
The TLVH431 family was designed specifically for high-reliability shunt regulation in automotive and industrial power systems - delivering precision, thermal robustness, and AEC-Q100 compliance in compact SOT packages.
FAQ
What is the reference voltage tolerance of TLVH431QDBZR,215?
The TLVH431QDBZR,215 has a D-grade reference voltage tolerance of ±0.75 % at 25 °C, with specified variation of ≤4 mV over the full −40 °C to +125 °C operating range. This tolerance is confirmed in Table 10 of the NXP datasheet for TLVH431QDBZR,215 and applies to all units marked "*SE" per Table 4.
Does TLVH431QDBZR,215 support operation up to 18 V cathode-anode voltage?
Yes, TLVH431QDBZR,215 supports cathode-anode voltage (VKA) up to 18 V under recommended operating conditions, with 20 V as the absolute maximum rating. Its adjustable output range spans 1.24 V to 18 V when configured with external resistors, as defined in Table 2 and Section 4 of the datasheet.
Is TLVH431QDBZR,215 qualified for automotive use?
Yes, TLVH431QDBZR,215 is AEC-Q100 qualified Grade 1 (−40 °C to +125 °C ambient), explicitly stated in Section 2 (Features and benefits) and Section 14.1 (Quality information). It is intended for automotive powertrain, body control, and ADAS applications requiring certified reliability.
What is the typical dynamic cathode-anode impedance of TLVH431QDBZR,215?
The TLVH431QDBZR,215 exhibits a typical dynamic cathode-anode impedance (ZKA) of 0.10 Ω at frequencies below 1 kHz and cathode currents from 0.1 mA to 70 mA, as specified in Table 10. This low impedance ensures stable regulation and minimal output perturbation in feedback-sensitive circuits.
How is the pinout configured for TLVH431QDBZR,215?
TLVH431QDBZR,215 uses SOT23 package with normal pinning: Pin 1 = REF, Pin 2 = K (cathode), Pin 3 = A (anode), per Table 5 and Figure 1. This matches standard TLVH431CDBZR/IDBZR pinouts and is distinct from mirrored-pinning variants ending in "MQDBZR".
TLVH431QDBZR,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:
- ±1.5%
- 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 (TO-236AB)
TLVH431QDBZR,215 FAQ
1.How can I place an order for TLVH431QDBZR,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLVH431QDBZR,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 TLVH431QDBZR,215 reliable?
The price and inventory of TLVH431QDBZR,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLVH431QDBZR,215 is usually 5 days.
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Once your TLVH431QDBZR,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 TLVH431QDBZR,215?
For technical support, including TLVH431QDBZR,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLVH431QDBZR,215 requirements.
6.How does Aetrix verify that TLVH431QDBZR,215 is sourced from the original manufacturer or authorized distributors?
All TLVH431QDBZR,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 TLVH431QDBZR,215 meets industry standards.
7.What is the process for return or replacement of TLVH431QDBZR,215?
All TLVH431QDBZR,215 units undergo pre-shipment inspection (PSI). If there is an issue with TLVH431QDBZR,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 TLVH431QDBZR,215 part is unused and in its original packaging.
Return procedure for TLVH431QDBZR,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLVH431QDBZR,215 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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LM4040EIM3-2.5/NOPB
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AZ431LBNTR-G1
Diodes Incorporated
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LM4040D20IDBZR
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LM4041DIM3-ADJ/NOPB
Texas Instruments
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LM4040DIM3X-2.5/NOPB
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LM4040DIM3-2.5/NOPB
Texas Instruments
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AZ431LANTR-G1
Diodes Incorporated
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