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NXP Semiconductors TLVH431MQDBZR,215
- Part No.:
- TLVH431MQDBZR,215
- Manufacturer:
- NXP Semiconductors
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TLVH431MQDBZR,215.pdf
- Description:
- IC VREF SHUNT ADJ 1.5% TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:3,865
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Product details
Overview
TLVH431MQDBZR,215 from NXP Semiconductors is a low-voltage, AEC-Q100 Grade 1 qualified, adjustable three-terminal shunt regulator with 0.75 % reference voltage tolerance (D-grade), 1.24 V nominal Vref, 18 V max cathode-anode voltage, and 70 mA sink current capability - used in isolated SMPS feedback loops and precision current sinks.
For engineers reviewing the TLVH431MQDBZR,215 datasheet, TLVH431MQDBZR,215 pinout, TLVH431MQDBZR,215 application, or TLVH431MQDBZR,215 equivalent, this page delivers verified specifications, mirrored-pin SOT753 package details, automotive-qualified thermal stability (−40 °C to +125 °C), dynamic impedance (0.15 Ω typical), and real-world design context for power regulation and current control circuits.
Technical Context
The TLVH431MQDBZR,215 implements an internal precision bandgap reference and high-gain error amplifier driving an NPN output stage, enabling sharp turn-on and stable regulation across 1.24 V to 18 V via two external resistors. Its mirrored pinning (Pin 1 = Cathode, Pin 2 = REF, Pin 3 = Anode) distinguishes it from standard SOT23 variants and ensures compatibility with specific PCB layouts requiring reversed terminal routing.
Designed for automotive-grade reliability, it maintains ±4 mV reference drift over −40 °C to +125 °C and supports stable operation with load capacitance down to 10 nF under worst-case conditions. Its 0.19–0.30 µA reference current and 55–80 µA minimum cathode current enable ultra-low-power biasing while retaining fast transient response in feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Vref tolerance | 0.75 % (D-grade) - enables high-accuracy output voltage setting in safety-critical automotive power supplies |
| VKA range | 1.24 V to 18 V - sets programmable regulation threshold using only two external resistors |
| IK(max) | 70 mA - supports robust shunt current handling in overvoltage protection and constant-current sink designs |
| ZKA (dynamic impedance) | 0.15 Ω typical (SOT753) - ensures minimal output voltage variation under dynamic load changes |
| Temp range | −40 °C to +125 °C - meets AEC-Q100 Grade 1 requirements for under-hood automotive electronics |
| Iref | 0.19–0.30 µA - allows high-value resistor networks (>100 kΩ) without degrading accuracy or power efficiency |
| ΔVref/ΔVKA | −0.5 to −1.5 mV/V - quantifies reference voltage stability against input voltage ripple in noisy supply rails |
Pinout & Package
SOT753 (SC-74A) plastic surface-mounted package with 5 leads; only pins 1 (Cathode), 2 (REF), 3 (Anode), 4 (n.c.), and 5 (n.c.) are functional - pins 4 and 5 are not connected and must remain unconnected in layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode (k) | Main current sink node; connects to regulated output rail or feedback network; requires thermal pad connection for >50 mA operation |
| 2 | Reference (REF) | Sense input for internal error amplifier; ties to voltage divider midpoint to set output voltage precisely |
| 3 | Anode (a) | Return path to ground or low-side rail; pin 1 and 3 may be shorted on PCB for improved thermal performance |
| 4 | n.c. | No connection - must be left floating; no internal bond wire or circuitry attached |
| 5 | n.c. | No connection - must be left floating; no internal bond wire or circuitry attached |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for automotive applications operating from −40 °C to +125 °C ambient, including engine control and ADAS power modules |
| Mirrored pinning (SOT753) | Enables direct replacement in legacy designs using reversed cathode/reference/anode routing without PCB redesign |
| Low output noise & impedance | 0.15 Ω dynamic impedance and low-noise architecture minimize feedback loop instability in isolated DC-DC converters |
| Precision reference stability | ±4 mV Vref drift over full temperature range ensures consistent regulation accuracy across vehicle life cycle |
| Wide sink current range | 0.08 mA to 70 mA operation supports both micro-power biasing and high-current shunt regulation in single-device solutions |
Applications
| Automotive SMPS Feedback | Precision Current Sink |
|---|---|
|
Use Scenario: Isolated flyback converter in automotive infotainment power supply requiring tight output regulation under variable load and temperature. IC Role / Device Role / Timing Role: Shunt regulator providing error signal to optocoupler in secondary-side feedback loop. Use Value: 0.75 % Vref tolerance and −40 °C to +125 °C operation ensure <±1.5 % output accuracy across vehicle lifetime without calibration. |
Use Scenario: LED driver for adaptive front lighting system demanding stable current despite battery voltage fluctuations. IC Role / Device Role / Timing Role: Precision constant-current sink controlling LED string current via external sense resistor. Use Value: 70 mA sink capability and 0.15 Ω dynamic impedance maintain ±0.5 % current accuracy over 9–16 V input range. |
| On-Board Voltage Clamp | Programmable Reference Source |
|
Use Scenario: Overvoltage protection circuit for 12 V CAN transceiver supply rail exposed to load-dump transients. IC Role / Device Role / Timing Role: Adjustable shunt clamp activated above 13.8 V to divert excess current during surge events. Use Value: 18 V max VKA rating and 70 mA sink capacity safely absorb 100 ms load-dump energy without latch-up or degradation. |
Use Scenario: Calibration reference for 16-bit ADC in battery management system monitoring cell voltages. IC Role / Device Role / Timing Role: Low-drift, low-noise voltage reference generating precise 2.5 V or 4.096 V via resistor divider. Use Value: 0.75 % initial tolerance and ±4 mV tempco enable <0.1 % total reference error over full automotive temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431QDBZR | SOT23 package, normal pinning (REF–CATHODE–ANODE), 1.5 % Vref tolerance, −40 °C to +125 °C | Requires PCB layout change due to different pinout; lower accuracy limits use in high-precision feedback | Select when cost sensitivity outweighs accuracy needs and SOT23 footprint is already established |
| TLVH431AMQDBZR | SOT753 package, mirrored pinning, 1 % Vref tolerance (A-grade), −40 °C to +125 °C | Same pinout and package as TLVH431MQDBZR,215 but relaxed tolerance; identical thermal and current specs | Choose for non-safety-critical automotive modules where 1 % accuracy suffices and D-grade cost premium is unjustified |
Compared with TLVH431QDBZR, TLVH431MQDBZR,215 offers superior accuracy and matching SOT753 footprint but requires no layout change versus TLVH431AMQDBZR - making it optimal for new AEC-Q100 designs demanding highest reference stability without sacrificing mechanical compatibility.
Availability
TLVH431MQDBZR,215 is available at Aetrix Electronics and suitable for automotive power management, isolated DC-DC converter feedback, and precision current regulation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLVH431MQDBZR,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 - delivering precision, thermal stability, and AEC-Q100 compliance in compact surface-mount packages.
FAQ
What is the pin configuration of TLVH431MQDBZR,215?
The TLVH431MQDBZR,215 uses mirrored pinning in the SOT753 package: Pin 1 = Cathode, Pin 2 = REF, Pin 3 = Anode, Pins 4 and 5 = not connected. This differs from standard SOT23 variants and must be accounted for in PCB layout to avoid functional failure. TLVH431MQDBZR,215 requires correct orientation during placement to match its internal circuit topology.
What does the 'MQ' in TLVH431MQDBZR,215 indicate?
The 'MQ' suffix in TLVH431MQDBZR,215 denotes D-grade (0.75 % reference voltage tolerance) combined with mirrored pinning in the SOT753 package. It identifies the device as part of NXP's automotive-qualified TLVH431 family optimized for high-accuracy, high-temperature shunt regulation. TLVH431MQDBZR,215 is distinct from C-, I-, or Q-grade variants and non-mirrored versions.
Is TLVH431MQDBZR,215 suitable for isolated SMPS feedback?
Yes - TLVH431MQDBZR,215 is explicitly validated for isolated feedback loops in switch-mode power supplies, as confirmed in Figure 29 of the datasheet. Its low dynamic impedance (0.15 Ω), low noise, and AEC-Q100 Grade 1 qualification make TLVH431MQDBZR,215 ideal for automotive flyback and forward converters requiring stable regulation across wide temperature and load ranges.
What is the maximum cathode current for TLVH431MQDBZR,215?
The absolute maximum cathode current for TLVH431MQDBZR,215 is 80 mA per Table 6 (Limiting Values), while the recommended operating maximum is 70 mA per Table 2 (Quick Reference Data). Exceeding 70 mA continuously requires thermal derating based on PCB copper area and ambient temperature - TLVH431MQDBZR,215 power dissipation must stay within 310 mW (FR4, standard footprint) or 700 mW (ceramic, standard footprint).
How does TLVH431MQDBZR,215 differ from TLVH431CDBZR?
TLVH431MQDBZR,215 uses SOT753 with mirrored pinning and 0.75 % Vref tolerance (D-grade), rated for −40 °C to +125 °C. TLVH431CDBZR uses SOT23 with normal pinning, 1.5 % tolerance (C-grade), and 0 °C to +70 °C operation. They are not pin-compatible, have different accuracy and temperature capabilities, and TLVH431MQDBZR,215 is automotive-qualified while TLVH431CDBZR is commercial-grade.
TLVH431MQDBZR,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)
TLVH431MQDBZR,215 FAQ
1.How can I place an order for TLVH431MQDBZR,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLVH431MQDBZR,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 TLVH431MQDBZR,215 reliable?
The price and inventory of TLVH431MQDBZR,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLVH431MQDBZR,215 is usually 5 days.
3.What payment methods are accepted for TLVH431MQDBZR,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLVH431MQDBZR,215 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLVH431MQDBZR,215?
TLVH431MQDBZR,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLVH431MQDBZR,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 TLVH431MQDBZR,215?
For technical support, including TLVH431MQDBZR,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLVH431MQDBZR,215 requirements.
6.How does Aetrix verify that TLVH431MQDBZR,215 is sourced from the original manufacturer or authorized distributors?
All TLVH431MQDBZR,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 TLVH431MQDBZR,215 meets industry standards.
7.What is the process for return or replacement of TLVH431MQDBZR,215?
All TLVH431MQDBZR,215 units undergo pre-shipment inspection (PSI). If there is an issue with TLVH431MQDBZR,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 TLVH431MQDBZR,215 part is unused and in its original packaging.
Return procedure for TLVH431MQDBZR,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLVH431MQDBZR,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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AZ431LBNTR-G1
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LM4041DIM3-ADJ/NOPB
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LM4040DIM3X-2.5/NOPB
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AZ431LANTR-G1
Diodes Incorporated
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