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NXP Semiconductors TLVH431AQDBVR,115
- Part No.:
- TLVH431AQDBVR,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Voltage Reference
- Package:
- SC-74A, SOT-753
- Datasheet:
-
TLVH431AQDBVR,115.pdf
- Description:
- IC VREF SHUNT ADJ 1% 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,222
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Product details
Overview
TLVH431AQDBVR,115 from NXP Semiconductors is an A-grade (±1 %) low-voltage 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, 0.15 Ω dynamic cathode-anode impedance, and 0.08–70 mA sink current capability for automotive-grade feedback regulation.
For engineers reviewing the TLVH431AQDBVR,115 datasheet, TLVH431AQDBVR,115 pinout, TLVH431AQDBVR,115 application, or TLVH431AQDBVR,115 equivalent, this page provides verified functional specifications, thermal performance data, AEC-Q100 Grade 1 qualification status, and direct alternative part comparisons for isolated SMPS feedback, precision current sinking, and high-temperature shunt regulation design validation.
Technical Context
The TLVH431AQDBVR,115 implements a bandgap-referenced error amplifier driving an NPN output stage, enabling precise two-resistor programmable output voltage from 1.24 V to 18 V. Its mirrored pinning (Pin 1 = cathode, Pin 2 = REF, Pin 3 = anode, Pins 4–5 = n.c.) supports stable operation with load capacitance down to 1 nF under worst-case thermal conditions.
It operates across −40 °C to +125 °C ambient, maintains ±1 % reference tolerance at 25 °C, exhibits −0.5 to −1.5 mV/V cathode-anode voltage sensitivity, and delivers <0.3 µA reference current variation over full temperature range - critical for low-power sensing and battery-backed systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 1.240 V ±1 % at 25 °C - sets accurate feedback threshold for closed-loop regulation |
| Temp Drift (−40 to 125 °C) | 4 mV typical - ensures <±10 mV total Vref shift across automotive temperature range |
| Cathode Current Range | 0.08–70 mA - supports both micro-power biasing and high-current shunt dissipation |
| Dynamic Impedance | 0.15 Ω typical - enables sharp turn-on and low-output-noise regulation |
| Ambient Temp Range | −40 °C to +125 °C - qualified for under-hood automotive and industrial control environments |
| AEC-Q100 Grade | Grade 1 - validated for automotive applications per stress test requirements |
| Package | SOT753 (SC-74A) - 5-pin surface-mount with two no-connect terminals for layout flexibility |
Pinout & Package
SOT753 (SC-74A) plastic surface-mounted package with 5 leads; pins 1 and 2 are not connected, providing routing isolation for high-density PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | cathode | Main current-sink path; connects to regulated output node in feedback loops |
| 2 | REF | High-impedance reference input; sets output voltage via external resistor divider |
| 3 | anode | Return path to ground or system common; thermally coupled to PCB for power dissipation |
| 4 | n.c. | No connection - electrically isolated; usable as keep-out zone or guard trace anchor |
| 5 | n.c. | No connection - electrically isolated; supports mechanical stability and thermal relief |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Output Voltage | 1.24 V to 18 V using two external resistors - eliminates need for multiple fixed-voltage regulators |
| A-Grade Reference Tolerance | ±1 % at 25 °C - reduces calibration overhead in precision power supply designs |
| Low Dynamic Impedance | 0.15 Ω typical - minimizes output voltage deviation during transient load steps |
| Automotive Qualification | AEC-Q100 Grade 1 - enables direct use in engine control, ADAS, and body electronics without requalification |
| Thermal Stability | 4 mV drift over −40 °C to +125 °C - maintains regulation accuracy in extreme under-hood environments |
Applications
| Isolated SMPS Feedback | Precision Current Sink |
|---|---|
Use Scenario: Regulating 3.3 V output of flyback converter with optocoupler-coupled secondary-side feedback. IC Role / Device Role / Timing Role: Shunt regulator providing stable 1.24 V reference to drive optocoupler LED, enabling precise output voltage sensing without primary-side controller complexity. Use Value: Enables ±1 % output regulation over line, load, and temperature while meeting AEC-Q100 Grade 1 reliability for automotive power modules. | Use Scenario: Constant-current biasing of laser diodes in automotive head-up display (HUD) drivers. IC Role / Device Role / Timing Role: Precision current sink setting exact 25 mA drive current independent of supply rail fluctuations. Use Value: Maintains optical output stability with <±1 % current accuracy across −40 °C to +125 °C, eliminating thermal derating margins. |
| On-Board Voltage Monitoring | Adjustable Overvoltage Clamp |
Use Scenario: Monitoring 12 V battery rail in vehicle telematics unit to trigger brownout warning at 10.5 V. IC Role / Device Role / Timing Role: Programmable shunt element triggering comparator when divided battery voltage exceeds 1.24 V reference. Use Value: Delivers ±1 % trip-point accuracy over full automotive temperature range, reducing false alarms and extending system uptime. | Use Scenario: Protecting 5 V USB-C PD interface against 6.5 V overvoltage events using active clamp topology. IC Role / Device Role / Timing Role: Adjustable shunt regulator clamping excess voltage by sinking current into protection FET gate. Use Value: Provides fast, repeatable 6.5 V threshold with <10 mV hysteresis - critical for robust USB-C compliance in infotainment systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431DQDBVR | 0.75 % reference tolerance; identical SOT753 package and temperature range | Better initial accuracy for metrology-grade current sources; higher cost | Select when ±0.75 % Vref tolerance is required and budget permits premium grade |
| TLVH431AQDBZR | SOT23 package (3-pin); same A-grade tolerance and −40 °C to +125 °C rating | Lower thermal resistance (220 K/W vs. 270 K/W) but limited to 570 mW max power dissipation | Choose for space-constrained layouts where 570 mW power handling suffices and footprint reduction is critical |
Compared with TLVH431DQDBVR, the TLVH431AQDBVR,115 trades 0.25 % initial accuracy for lower cost and sufficient stability for most automotive feedback loops; versus TLVH431AQDBZR, it offers higher power dissipation margin (460 mW vs. 570 mW) and dedicated no-connect pins for noise-sensitive routing - making it optimal for high-reliability, thermally demanding SMPS designs.
Availability
TLVH431AQDBVR,115 is available at Aetrix Electronics and suitable for automotive power management, industrial sensor conditioning, and telecom DC-DC converter applications requiring stable component supply with AEC-Q100 Grade 1 assurance.
Supply support for TLVH431AQDBVR,115 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-accuracy, high-temperature shunt regulation in automotive power systems - emphasizing AEC-Q100 qualification, low drift, and robustness in noisy electrical environments.
FAQ
What is the reference voltage tolerance of TLVH431AQDBVR,115 at 25 °C?
The TLVH431AQDBVR,115 has a reference voltage tolerance of ±1 % at 25 °C, corresponding to a 1.240 V nominal Vref with min/max values of 1.228 V and 1.252 V. This A-grade specification is confirmed in Table 10 of the NXP datasheet and applies across the full operating temperature range up to +125 °C with controlled drift.
Does TLVH431AQDBVR,115 support isolated feedback in flyback converters?
Yes, TLVH431AQDBVR,115 is explicitly used in isolated feedback loops for Switch Mode Power Supplies (SMPS), as shown in Figure 29 of the datasheet. Its low output impedance (0.15 Ω), sharp turn-on, and AEC-Q100 Grade 1 qualification make TLVH431AQDBVR,115 ideal for driving optocouplers in automotive and industrial flyback designs requiring tight output regulation.
What is the pin configuration of TLVH431AQDBVR,115?
TLVH431AQDBVR,115 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 pinning and is confirmed in Table 5 and Figure 1 of the NXP datasheet - critical for correct PCB layout and functional validation of TLVH431AQDBVR,115.
What is the maximum cathode current for TLVH431AQDBVR,115?
The maximum cathode current for TLVH431AQDBVR,115 is 70 mA under recommended operating conditions, with absolute maximum rating of 80 mA. This value is specified in Table 2 (Quick Reference Data) and Table 8 (Operating Conditions), and defines the upper limit of sink current capability for TLVH431AQDBVR,115 in shunt regulator and current-limiting configurations.
Is TLVH431AQDBVR,115 qualified for automotive applications?
Yes, TLVH431AQDBVR,115 is AEC-Q100 qualified Grade 1 (−40 °C to +125 °C), as stated in Section 2 (Features and benefits) and Section 14.1 (Quality information) of the NXP datasheet. This qualification confirms TLVH431AQDBVR,115 meets stress test requirements for automotive electronics, including engine control units, ADAS sensors, and body control modules.
TLVH431AQDBVR,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Package/Case:
- SC-74A, SOT-753
- 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:
- 5-TSOP
TLVH431AQDBVR,115 FAQ
1.How can I place an order for TLVH431AQDBVR,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLVH431AQDBVR,115 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 TLVH431AQDBVR,115 reliable?
The price and inventory of TLVH431AQDBVR,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLVH431AQDBVR,115 is usually 5 days.
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Once your TLVH431AQDBVR,115 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 TLVH431AQDBVR,115?
For technical support, including TLVH431AQDBVR,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLVH431AQDBVR,115 requirements.
6.How does Aetrix verify that TLVH431AQDBVR,115 is sourced from the original manufacturer or authorized distributors?
All TLVH431AQDBVR,115 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 TLVH431AQDBVR,115 meets industry standards.
7.What is the process for return or replacement of TLVH431AQDBVR,115?
All TLVH431AQDBVR,115 units undergo pre-shipment inspection (PSI). If there is an issue with TLVH431AQDBVR,115, 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 TLVH431AQDBVR,115 part is unused and in its original packaging.
Return procedure for TLVH431AQDBVR,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLVH431AQDBVR,115 Tags
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