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NXP Semiconductors TLVH431ACDBZR,215
- Part No.:
- TLVH431ACDBZR,215
- Manufacturer:
- NXP Semiconductors
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
TLVH431ACDBZR,215.pdf
- Description:
- IC VREF SHUNT ADJ 1% TO236AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,402
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Product details
Overview
TLVH431ACDBZR,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 output voltage programming from 1.24 V to 18 V using two external resistors-used in isolated SMPS feedback loops, precision current limiting, and on-board regulation.
For engineers reviewing the TLVH431ACDBZR,215 datasheet, TLVH431ACDBZR,215 pinout, TLVH431ACDBZR,215 application, or TLVH431ACDBZR,215 equivalent, key selection factors include its A-grade reference tolerance, automotive-qualified AEC-Q100 Grade 1 rating, SOT23 thermal performance, and stable operation with load capacitance down to 10 nF in SMPS feedback designs.
Technical Context
The TLVH431ACDBZR,215 implements a precision bandgap-based reference with active output stage for sharp turn-on and low-output-impedance regulation. Its internal architecture enables programmable output voltage via resistor divider feedback at the REF pin while maintaining stability across wide cathode-anode voltage (1.24–18 V) and current (0.08–70 mA) ranges.
It operates across −40 °C to 125 °C ambient, meets AEC-Q100 Grade 1 requirements, and exhibits <4 mV reference voltage drift over full temperature range. The device's 0.1 Ω typical dynamic impedance and low 0.19–0.30 µA reference current support high-accuracy current sinking and tight regulation in isolated feedback paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.240 V ±1 % (A-grade), enabling precise 1.24–18 V programmable output with minimal calibration overhead |
| Cathode-Anode Voltage Range | 1.24 V to 18 V - sets usable output span for both low-voltage logic rails and higher-voltage power stages |
| Cathode Current Range | 0.08 mA to 70 mA - supports light-load biasing and robust shunt regulation under transient load conditions |
| Dynamic Impedance | 0.10 Ω typical - ensures minimal output voltage deviation during fast current transients in feedback loops |
| Temp. Drift (−40 to 125 °C) | 4 mV typical - guarantees stable reference accuracy in automotive and industrial environments without external compensation |
| Reference Current | 0.19–0.30 µA - enables high-impedance resistor dividers (e.g., 10 kΩ/100 kΩ), reducing power loss in battery-powered systems |
| AEC-Q100 Qualification | Grade 1 (−40 to 125 °C) - validated for under-hood automotive applications including engine control and ADAS power supplies |
Pinout & Package
SOT23 (TO-236AB) plastic surface-mounted package, 3-lead, normal pinning configuration per Table 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (REF) | Reference input | High-impedance node for resistor-divider feedback; sets output voltage as VOUT = VREF × (1 + R1/R2) |
| 2 (K) | Cathode | Current-sink output terminal; connects to regulated rail or optocoupler anode in isolated SMPS designs |
| 3 (A) | Anode | Return path to ground or low-side reference; pin 1 and 2 may be tied to anode for improved thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Adjustable output voltage (1.24–18 V) | Enables single BOM part to cover multiple supply rails without redesigning feedback networks |
| A-grade ±1 % reference tolerance | Reduces system-level calibration steps and improves long-term output accuracy vs. standard-grade variants |
| 0.1 Ω typical dynamic impedance | Maintains tight regulation during rapid load steps-critical for stable isolated flyback or forward converter feedback |
| Low 0.19–0.30 µA reference current | Permits use of megaohm-level feedback resistors, minimizing quiescent current in always-on circuits |
| AEC-Q100 Grade 1 qualification | Validates reliability for automotive power management in harsh thermal and vibration environments |
Applications
| Isolated SMPS Feedback | Precision Current Limiter |
|---|---|
Use Scenario: Secondary-side voltage sensing in flyback converters with optocoupler-coupled feedback to primary controller. IC Role / Device Role / Timing Role: Shunt regulator providing stable 2.5 V reference to optocoupler LED, enabling accurate output voltage regulation across line/load/temperature. Use Value: Replaces discrete Zener + transistor combinations with tighter tolerance (±1 %), lower drift (4 mV), and guaranteed stability down to 10 nF load capacitance. | Use Scenario: Overcurrent protection in USB-C PD or PoE-powered devices where precise trip threshold is required. IC Role / Device Role / Timing Role: Precision constant-current sink controlling gate drive or sense amplifier bias to enforce current limit. Use Value: Delivers 1 % reference accuracy and sub-µA reference current-enabling 100 mA to 5 A limits with <1 % error and no additional op-amp circuitry. |
| On-Board Linear Regulator | Programmable Voltage Reference |
Use Scenario: Low-noise local regulation for ADC references or sensor excitation in industrial PLC modules. IC Role / Device Role / Timing Role: Shunt regulator configured as adjustable series pass element with external PNP transistor. Use Value: Achieves <10 µV RMS noise and 0.1 Ω impedance-superior to standard Zeners-while supporting 1.24–18 V outputs with same footprint. | Use Scenario: Calibration reference in portable test equipment requiring traceable, stable DC voltage sources. IC Role / Device Role / Timing Role: Fixed or adjustable precision reference source with buffered output via op-amp follower. Use Value: Provides ±1 % initial accuracy and <4 mV tempco over −40 to 125 °C-meeting Class II metrology requirements without oven control. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431CDBZR,215 | Standard grade (±1.5 % VREF tolerance), same SOT23 package and pinout | Lower accuracy requirement; cost-sensitive consumer or industrial non-automotive designs | Select when ±1.5 % reference tolerance suffices and AEC-Q100 qualification is not required |
| TLVH431AQDBZR,215 | A-grade (±1 %), but rated for −40 °C to 125 °C extended temperature range and AEC-Q100 Grade 0 | Higher-reliability automotive applications requiring full extended-temp validation | Choose for under-hood modules needing Grade 0 qualification or wider operating margin beyond Grade 1 |
Compared with TLVH431CDBZR,215, the TLVH431ACDBZR,215 delivers tighter reference accuracy and automotive qualification; compared with TLVH431AQDBZR,215, it offers identical A-grade tolerance but targets Grade 1 instead of Grade 0-reducing cost while retaining full −40 to 125 °C operation and AEC-Q100 compliance.
Availability
TLVH431ACDBZR,215 is available at Aetrix Electronics and suitable for automotive power supplies, industrial SMPS feedback loops, and precision current-limiting circuits requiring stable component supply, AEC-Q100 qualification, and ±1 % reference accuracy.
Supply support for TLVH431ACDBZR,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.
The TLVH431 family was designed for precision voltage regulation in space-constrained, thermally demanding systems-especially automotive power management and isolated switching supplies requiring AEC-Q100 compliance and low-drift references.
FAQ
What is the reference voltage tolerance of TLVH431ACDBZR,215?
The TLVH431ACDBZR,215 has an A-grade reference voltage tolerance of ±1 % at 25 °C, with typical reference voltage of 1.240 V. This tolerance holds across its specified operating temperature range of −40 °C to 125 °C, making TLVH431ACDBZR,215 suitable for high-accuracy applications such as automotive feedback loops and precision current limiting where tighter regulation than standard-grade variants is required.
Does TLVH431ACDBZR,215 support operation in automotive environments?
Yes, TLVH431ACDBZR,215 is AEC-Q100 qualified to Grade 1 (−40 °C to +125 °C ambient), confirming its reliability for under-hood automotive applications including engine control units, body electronics, and ADAS power supplies. Its thermal stability, low drift, and robust construction meet stringent automotive stress-test requirements, distinguishing TLVH431ACDBZR,215 from commercial-grade shunt regulators.
What is the minimum cathode current required for TLVH431ACDBZR,215 to regulate properly?
The TLVH431ACDBZR,215 requires a minimum cathode current (IK(min)) of 55 µA to maintain regulation, as specified in the datasheet under limiting conditions. This low startup current allows TLVH431ACDBZR,215 to function reliably in ultra-low-power applications such as always-on monitoring circuits or battery-backed systems where quiescent current must remain below 100 µA.
Can TLVH431ACDBZR,215 replace a Zener diode in existing designs?
Yes, TLVH431ACDBZR,215 can directly replace Zener diodes in most shunt regulation applications due to its sharper turn-on characteristic, lower dynamic impedance (0.1 Ω vs. typical Zener >10 Ω), and programmable output (1.24–18 V). Unlike Zeners, TLVH431ACDBZR,215 maintains stable regulation across temperature and current-making TLVH431ACDBZR,215 ideal for upgrading legacy designs to meet modern accuracy and automotive qualification requirements.
What package type and pin configuration does TLVH431ACDBZR,215 use?
TLVH431ACDBZR,215 uses the SOT23 (TO-236AB) plastic surface-mounted package with normal pinning: Pin 1 = REF, Pin 2 = K (cathode), Pin 3 = A (anode). This 3-lead footprint matches industry-standard Zener and shunt regulator layouts, enabling drop-in replacement in existing PCBs without layout changes-confirmed by NXP's official pinning table for TLVH431ACDBZR,215.
TLVH431ACDBZR,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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23 (TO-236AB)
TLVH431ACDBZR,215 FAQ
1.How can I place an order for TLVH431ACDBZR,215 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLVH431ACDBZR,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 TLVH431ACDBZR,215 reliable?
The price and inventory of TLVH431ACDBZR,215 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLVH431ACDBZR,215 is usually 5 days.
3.What payment methods are accepted for TLVH431ACDBZR,215?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLVH431ACDBZR,215 transactions.
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4.How is shipping managed for TLVH431ACDBZR,215?
TLVH431ACDBZR,215 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLVH431ACDBZR,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 TLVH431ACDBZR,215?
For technical support, including TLVH431ACDBZR,215 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLVH431ACDBZR,215 requirements.
6.How does Aetrix verify that TLVH431ACDBZR,215 is sourced from the original manufacturer or authorized distributors?
All TLVH431ACDBZR,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 TLVH431ACDBZR,215 meets industry standards.
7.What is the process for return or replacement of TLVH431ACDBZR,215?
All TLVH431ACDBZR,215 units undergo pre-shipment inspection (PSI). If there is an issue with TLVH431ACDBZR,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 TLVH431ACDBZR,215 part is unused and in its original packaging.
Return procedure for TLVH431ACDBZR,215:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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