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NXP Semiconductors TLVH431AIDBZR,215
- Part No.:
- TLVH431AIDBZR,215
- Manufacturer:
- NXP Semiconductors
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TLVH431AIDBZR,215.pdf
- Description:
- IC VREF SHUNT ADJ 1% TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,130
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Product details
Overview
TLVH431AIDBZR,215 from NXP Semiconductors is an A-grade (1 % reference voltage tolerance), low-voltage, three-terminal adjustable shunt regulator in SOT23 package, delivering 1.24 V reference with ±12 mV max variation over −40 °C to +85 °C, sink current up to 70 mA, and dynamic impedance of 0.1 Ω - used for precision feedback in automotive-grade isolated SMPS designs.
For engineers reviewing the TLVH431AIDBZR,215 datasheet, TLVH431AIDBZR,215 pinout, TLVH431AIDBZR,215 application, or TLVH431AIDBZR,215 equivalent, key selection factors include its AEC-Q100 Grade 1 qualification, 1 % Vref tolerance at 25 °C, −40 °C to +85 °C operating range, SOT23 normal pinning, and cathode-anode voltage capability up to 18 V.
Technical Context
The TLVH431AIDBZR,215 implements a precision bandgap-based reference amplifier driving an NPN output stage, enabling sharp turn-on and stable regulation across wide load and temperature ranges. Its internal architecture supports programmable output voltages from 1.24 V to 18 V using two external resistors, with minimal dependence on cathode-anode voltage variation (−0.5 to −1.5 mV/V).
Designed for automotive feedback loops, it features low output noise, typical 4 mV temperature drift over −40 °C to +125 °C, and guaranteed operation under transient load conditions up to 70 mA sink current - all while maintaining <0.3 μA reference current and <0.05 μA off-state leakage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Vref tolerance | 1 % (A-Grade) - ensures ±12.4 mV max deviation at 25 °C, critical for tight-output-voltage SMPS designs |
| Vref range | 1.24 V nominal, adjustable to 18 V - enables flexible output programming without external op-amps |
| Operating temp | −40 °C to +85 °C - qualified for under-hood automotive ambient conditions |
| Sink current (IK) | 0.08 mA to 70 mA - supports direct drive of optocoupler LEDs in isolated feedback paths |
| ZKA (dynamic impedance) | 0.1 Ω typical - provides high loop gain and fast transient response in closed-loop regulation |
| AEC-Q100 grade | Grade 1 (−40 °C to +125 °C junction) - meets automotive reliability and stress-test requirements |
| Package | SOT23 (TO-236AB), 3-pin, normal pinning - industry-standard footprint compatible with high-volume SMT assembly |
Pinout & Package
SOT23 plastic surface-mounted package (TO-236AB), 3-lead, normal pinning configuration per Table 5 - compact 2.9 mm × 1.3 mm footprint with 0.95 mm height and standard 0.95 mm lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - REF | Reference input | High-impedance node sensing voltage divider output; draws only 0.19–0.30 μA - minimizes divider loading error |
| 2 - K (Cathode) | Current sink output | Active NPN collector; sinks up to 70 mA to ground or return rail - directly interfaces with optocoupler anode or series pass transistor base |
| 3 - A (Anode) | Power return path | Low-impedance emitter connection; ties to system ground or negative rail - thermal performance improves when connected to large copper pour |
Key Features
| Feature | Design Value |
|---|---|
| Programmable output voltage | Set from 1.24 V to 18 V using two external resistors - eliminates need for multiple fixed-voltage references |
| Low dynamic impedance | 0.1 Ω typical - maintains regulation accuracy under varying load currents without external compensation |
| Sharp turn-on characteristic | Fast, well-defined knee at Vref - enables clean switching behavior in current-limiting and precision shunt applications |
| Low reference current | 0.19–0.30 μA typical - allows use of high-value resistor dividers to minimize power loss in battery-sensitive systems |
| AEC-Q100 Grade 1 | Qualified for automotive applications with full temperature and reliability testing - suitable for engine control, body electronics, and ADAS power supplies |
Applications
| Isolated SMPS Feedback | Precision Current Sink |
|---|---|
Use Scenario: Secondary-side voltage regulation in flyback or forward converters where primary-side sensing is impractical. IC Role / Device Role / Timing Role: Shunt regulator providing error signal to optocoupler LED, closing feedback loop across isolation barrier. Use Value: Enables ±1 % output voltage accuracy over line/load/temperature with no secondary-side LDO required. | Use Scenario: Stable bias current generation for laser diodes or sensor excitation circuits requiring low-drift current sources. IC Role / Device Role / Timing Role: Precision constant-current sink referenced to internal 1.24 V bandgap. Use Value: Delivers 1 % accurate current (e.g., 10 mA ±0.1 mA) independent of supply voltage fluctuations up to 18 V. |
| On-Board Voltage Regulation | Precision Current Limiter |
Use Scenario: Local 3.3 V or 5 V regulation for microcontrollers or sensors in space-constrained automotive modules. IC Role / Device Role / Timing Role: Adjustable shunt regulator replacing Zener diodes with superior stability and lower impedance. Use Value: Reduces output voltage drift by >5× versus 5 % Zeners and supports dynamic load steps up to 70 mA. | Use Scenario: Overcurrent protection for USB ports, LED drivers, or motor control logic rails. IC Role / Device Role / Timing Role: Adjustable current limiter using REF pin as sense threshold and cathode as controlled sink path. Use Value: Sets precise trip point (e.g., 500 mA) with <1 % tolerance and fast response to fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431ACDBZR,215 | Standard grade (1.5 % Vref tolerance); 0 °C to +70 °C temp range | Not qualified for automotive under-hood use; suitable for commercial power supplies | Select when cost sensitivity outweighs automotive qualification and tighter tolerance needs |
| TLVH431AQDBZR,215 | D-grade (0.75 % Vref tolerance); −40 °C to +125 °C temp range | Higher precision and extended junction temperature rating - ideal for engine control units | Choose when ±0.75 % reference accuracy and full AEC-Q100 Grade 0 support are required |
Compared with TLVH431AIDBZR,215, TLVH431ACDBZR,215 trades tolerance and temperature range for lower cost, while TLVH431AQDBZR,215 upgrades both tolerance and thermal capability - making TLVH431AIDBZR,215 the optimal balance of automotive qualification, 1 % accuracy, and industrial temperature coverage.
Availability
TLVH431AIDBZR,215 is available at Aetrix Electronics and suitable for automotive power supplies, isolated DC-DC converters, and precision current-sensing applications requiring stable component supply and long-term lifecycle continuity.
Supply support for TLVH431AIDBZR,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 precision voltage regulation and feedback in automotive and industrial power systems - emphasizing AEC-Q100 compliance, low drift, and robust SMT packaging.
FAQ
What is the reference voltage tolerance of TLVH431AIDBZR,215?
The TLVH431AIDBZR,215 has a reference voltage tolerance of 1 % (A-Grade) at 25 °C, meaning its Vref falls between 1.228 V and 1.252 V under nominal conditions. This tolerance expands to ±18 mV over its full −40 °C to +85 °C operating range, supporting high-accuracy feedback in automotive environments.
Does TLVH431AIDBZR,215 support operation above 12 V output?
Yes, TLVH431AIDBZR,215 supports programmable output voltages up to 18 V when configured with appropriate external resistors. Its cathode-anode voltage rating is 20 V absolute maximum, and it maintains regulation stability and low dynamic impedance across the full 1.24 V to 18 V range.
What is the pin configuration of TLVH431AIDBZR,215?
TLVH431AIDBZR,215 uses SOT23 package with normal pinning: Pin 1 = REF, Pin 2 = K (cathode), Pin 3 = A (anode). This matches standard TLVH431 layout conventions and is verified in NXP's Table 5 and Figure 1 - no mirrored pinning applies to this variant.
Is TLVH431AIDBZR,215 qualified for automotive applications?
Yes, TLVH431AIDBZR,215 is AEC-Q100 qualified (Grade 1), certified for operation from −40 °C to +85 °C ambient temperature and validated for automotive reliability stress tests including HTOL, TC, and ESD. It is explicitly designated for use in automotive power supplies and feedback systems.
What is the minimum cathode current required for TLVH431AIDBZR,215 regulation?
The minimum cathode current (IK(min)) for TLVH431AIDBZR,215 is 55 μA - ensuring stable regulation even under ultra-low-power conditions. This allows use with high-value resistor dividers and extends battery life in always-on automotive subsystems.
TLVH431AIDBZR,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 ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23 (TO-236AB)
TLVH431AIDBZR,215 FAQ
1.How can I place an order for TLVH431AIDBZR,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLVH431AIDBZR,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 TLVH431AIDBZR,215 reliable?
The price and inventory of TLVH431AIDBZR,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLVH431AIDBZR,215 is usually 5 days.
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TLVH431AIDBZR,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLVH431AIDBZR,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 TLVH431AIDBZR,215?
For technical support, including TLVH431AIDBZR,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLVH431AIDBZR,215 requirements.
6.How does Aetrix verify that TLVH431AIDBZR,215 is sourced from the original manufacturer or authorized distributors?
All TLVH431AIDBZR,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 TLVH431AIDBZR,215 meets industry standards.
7.What is the process for return or replacement of TLVH431AIDBZR,215?
All TLVH431AIDBZR,215 units undergo pre-shipment inspection (PSI). If there is an issue with TLVH431AIDBZR,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 TLVH431AIDBZR,215 part is unused and in its original packaging.
Return procedure for TLVH431AIDBZR,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLVH431AIDBZR,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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