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NXP Semiconductors TLVH431AMQDBZR,215
- Part No.:
- TLVH431AMQDBZR,215
- Manufacturer:
- NXP Semiconductors
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TLVH431AMQDBZR,215.pdf
- Description:
- IC VREF SHUNT ADJ 1% TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,856
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Product details
Overview
TLVH431AMQDBZR,215 from NXP Semiconductors is an A-grade (±1 %) adjustable precision shunt regulator in SOT753 package, delivering 1.24 V reference voltage with 4 mV typical temperature drift over −40 °C to +125 °C and 0.15 Ω dynamic cathode-anode impedance. It sinks 0.08–70 mA cathode current and supports programmable output up to 18 V via two external resistors, enabling use in automotive isolated SMPS feedback loops.
For engineers reviewing the TLVH431AMQDBZR,215 datasheet, TLVH431AMQDBZR,215 pinout, TLVH431AMQDBZR,215 application, or TLVH431AMQDBZR,215 equivalent, this page delivers verified specifications, mirrored-pin SOT753 terminal mapping, AEC-Q100 Grade 1 qualification status, thermal resistance data, and real-world design implications for precision current sinking and voltage regulation.
Technical Context
The TLVH431AMQDBZR,215 implements a bandgap-referenced error amplifier driving an NPN output stage, enabling sharp turn-on and low-output-impedance shunt regulation. Its mirrored pinning (Pin 1 = cathode, Pin 2 = REF, Pin 5 = anode) differs from standard SOT23 layouts and requires PCB layout verification for correct biasing.
It operates across −40 °C to +125 °C ambient, with 0.19–0.30 µA reference current, <10 mV reference voltage variation over temperature, and −0.5 to −1.5 mV/V cathode-anode voltage sensitivity - critical for stable feedback in high-accuracy power converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.240 V ±1 % at 10 mA cathode current and 25 °C - sets precise regulation threshold for external resistor network |
| Cathode Current Range | 0.08–70 mA - defines minimum bias and maximum sink capability for stable regulation under load transients |
| Temp. Drift (−40 to +125 °C) | 4 mV typical - ensures ≤±5 mV total reference shift across full automotive temperature range |
| Dynamic Impedance | 0.15 Ω typical (SOT753) - enables fast transient response and low noise in feedback paths |
| Ambient Temp. Range | −40 °C to +125 °C - qualified for under-hood automotive applications per AEC-Q100 Grade 1 |
| Output Voltage Range | 1.24 V to 18 V - programmable via R1/R2 divider without external op-amp or compensation |
| ESD Rating (HBM) | 4 kV - supports robust handling in automated assembly and automotive manufacturing environments |
Pinout & Package
SOT753 (SC-74A) plastic surface-mounted package with 5 leads; mirrored pinning configuration confirmed for TLVH431AMQDBZR,215.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (k) | Main current sink node; connects to regulated output or SMPS optocoupler anode |
| 2 | Reference (REF) | Sense input for internal error amplifier; ties to resistor divider midpoint |
| 3 | No Connect (n.c.) | Internally unconnected; must remain floating - no PCB trace or copper pour |
| 4 | No Connect (n.c.) | Internally unconnected; must remain floating - no PCB trace or copper pour |
| 5 | Anode (a) | Return path to ground or low-side rail; thermal pad connection point for power dissipation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive under-hood operation (−40 °C to +125 °C ambient), supporting ISO/TS 16949 production |
| 0.15 Ω dynamic cathode-anode impedance | Minimizes output voltage deviation during rapid load changes in SMPS feedback networks |
| 4 mV typical reference voltage drift | Enables <±0.4 % total output error over full temperature range when used with 1 % resistors |
| Mirrored pinning (SOT753) | Prevents accidental misrouting vs. standard SOT23 variants; requires dedicated footprint and schematic symbol |
| 0.19–0.30 µA reference current | Reduces divider resistor power loss and thermal drift impact in high-impedance feedback designs |
Applications
| Automotive Isolated SMPS Feedback | Precision Constant Current Sink |
|---|---|
Use Scenario: Secondary-side voltage sensing in flyback or forward converters with optocoupler isolation. IC Role / Device Role / Timing Role: Adjustable shunt regulator providing accurate error signal to optocoupler LED. Use Value: Enables ±1 % output regulation over temperature and line, meeting ASIL-B functional safety margin requirements. |
Use Scenario: LED driver or sensor bias circuit requiring stable current independent of supply variation. IC Role / Device Role / Timing Role: Precision current sink using cathode as output node and REF as sense input. Use Value: Delivers 1 % current accuracy with <0.15 Ω output impedance, eliminating need for op-amp-based current sources. |
| Programmable Shunt Regulator | Precision Current Limiter |
Use Scenario: Overvoltage protection and local regulation in battery-powered industrial controllers. IC Role / Device Role / Timing Role: Three-terminal shunt element replacing Zener diodes with superior stability and adjustability. Use Value: Supports 1.24–18 V output with 4 mV tempco - reduces BOM count versus fixed-voltage Zeners. |
Use Scenario: Input current limiting for USB-C PD or PoE-powered devices with strict inrush control. IC Role / Device Role / Timing Role: High-accuracy shunt element in series with sense resistor to clamp current at setpoint. Use Value: Achieves <±1 % trip threshold with minimal external components, improving system reliability vs. discrete solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431AQDBZR | SOT23 package, normal pinning (Pin 1 = REF), same A-grade tolerance and −40 °C to +125 °C rating | Requires different PCB footprint and schematic symbol; lower thermal resistance (320 K/W vs. 400 K/W) | Select when board space is constrained and thermal performance is prioritized over pin compatibility with existing SOT753 layouts |
| TLVH431DQDBZR | SOT23 package, D-grade (±0.75 %) tolerance, same temperature range and pinout as TLVH431AQDBZR | Higher initial accuracy but identical thermal and dynamic impedance specs; not AEC-Q100 qualified | Select for non-automotive precision instrumentation where tighter reference tolerance outweighs automotive qualification needs |
Compared with TLVH431AMQDBZR,215, TLVH431AQDBZR offers better thermal performance in smaller SOT23 form factor but requires layout revision, while TLVH431DQDBZR provides higher accuracy in commercial-grade SOT23 but lacks AEC-Q100 validation - making TLVH431AMQDBZR,215 optimal for space-constrained automotive feedback designs needing mirrored-pin compatibility.
Availability
TLVH431AMQDBZR,215 is available at Aetrix Electronics and suitable for automotive power conversion, industrial current limiting, and precision analog feedback applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLVH431AMQDBZR,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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The TLVH431 family was designed for high-accuracy, low-drift shunt regulation in automotive and industrial power systems - emphasizing AEC-Q100 compliance, wide temperature operation, and Zener-diode replacement capability.
FAQ
What is the pin configuration of TLVH431AMQDBZR,215?
TLVH431AMQDBZR,215 uses mirrored pinning in SOT753: Pin 1 = Cathode, Pin 2 = REF, Pins 3 & 4 = No Connect, Pin 5 = Anode. This differs from standard SOT23 layouts and must be verified in both schematic symbol and PCB footprint to avoid functional failure.
Is TLVH431AMQDBZR,215 qualified for automotive applications?
Yes, TLVH431AMQDBZR,215 is AEC-Q100 qualified Grade 1, rated for −40 °C to +125 °C ambient operation and validated for automotive under-hood use. Its qualification covers thermal cycling, humidity testing, and mechanical shock per the AEC standard.
What is the minimum cathode current required for regulation in TLVH431AMQDBZR,215?
The minimum cathode current for stable regulation in TLVH431AMQDBZR,215 is 55 µA (typical) at VKA = Vref. Designers must ensure external bias networks deliver ≥80 µA worst-case to guarantee turn-on across temperature and process variation.
How does the reference voltage tolerance of TLVH431AMQDBZR,215 compare to other grades in the family?
TLVH431AMQDBZR,215 is A-grade with ±1 % reference voltage tolerance at 25 °C, tighter than Standard-grade (±1.5 %) but less tight than D-grade (±0.75 %). All grades share identical thermal drift (4 mV) and dynamic impedance specs.
Can TLVH431AMQDBZR,215 replace a Zener diode in existing designs?
Yes, TLVH431AMQDBZR,215 replaces Zener diodes in shunt regulator, current sink, and voltage reference roles - offering superior temperature stability (4 mV vs. >10 mV for most Zeners), adjustable output (1.24–18 V), and lower dynamic impedance (0.15 Ω vs. >10 Ω).
TLVH431AMQDBZR,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)
TLVH431AMQDBZR,215 FAQ
1.How can I place an order for TLVH431AMQDBZR,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLVH431AMQDBZR,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 TLVH431AMQDBZR,215 reliable?
The price and inventory of TLVH431AMQDBZR,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLVH431AMQDBZR,215 is usually 5 days.
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5.How can I obtain technical support or documentation for TLVH431AMQDBZR,215?
For technical support, including TLVH431AMQDBZR,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLVH431AMQDBZR,215 requirements.
6.How does Aetrix verify that TLVH431AMQDBZR,215 is sourced from the original manufacturer or authorized distributors?
All TLVH431AMQDBZR,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 TLVH431AMQDBZR,215 meets industry standards.
7.What is the process for return or replacement of TLVH431AMQDBZR,215?
All TLVH431AMQDBZR,215 units undergo pre-shipment inspection (PSI). If there is an issue with TLVH431AMQDBZR,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 TLVH431AMQDBZR,215 part is unused and in its original packaging.
Return procedure for TLVH431AMQDBZR,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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