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Texas Instruments TPS3702CX50QDDCRQ1
- Part No.:
- TPS3702CX50QDDCRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
TPS3702CX50QDDCRQ1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,847
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Product details
Overview
TPS3702CX50QDDCRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive window voltage detector IC that monitors supply rails from 1V to 5V with ±0.9% threshold accuracy over –40°C to 125°C, 0.55% internal hysteresis, and dual open-drain UV/OV outputs - used for fault detection in safety-critical power rails of ADAS cameras and radar systems.
For engineers reviewing the TPS3702CX50QDDCRQ1 datasheet, TPS3702CX50QDDCRQ1 pinout, TPS3702CX50QDDCRQ1 application, or TPS3702CX50QDDCRQ1 equivalent, this page delivers verified electrical specifications, SOT-6 pin mapping, automotive-grade reliability context, and real-world implementation guidance for rail monitoring in front/rear-view camera modules and FPGA power sequencing.
Technical Context
The TPS3702CX50QDDCRQ1 integrates two precision comparators and a trimmed internal resistor divider to form a fixed-threshold window detector - eliminating external resistors while maintaining 0.25% typical threshold accuracy. Its SET pin selects between two factory-programmed accuracy bands (±4% or ±9% nominal), enabling dynamic adjustment of trip margins during system startup or operational modes.
It operates across a 2V–18V VDD range while monitoring SENSE inputs up to 6.5V, with independent open-drain UV and OV outputs capable of sinking 10mA and tolerating pull-up voltages up to 18V - supporting mixed-voltage interface schemes without level shifters. Internal glitch immunity and 300µs startup delay ensure robust operation in noisy automotive environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2V to 18V - powers device from wide-input automotive supplies; supports direct connection to 12V battery or 5V/3.3V domains. |
| Threshold Accuracy | ±0.9% over –40°C to 125°C - guarantees reliable rail monitoring within tight tolerance bands for ASIL-B systems. |
| Hysteresis | 0.55% of nominal trip point - prevents chatter on marginal rails by enforcing minimum voltage recovery before reset release. |
| Quiescent Current | 7µA typical - enables always-on monitoring in low-power ECU and camera subsystems without impacting battery drain. |
| Output Type | Independent open-drain UV and OV - allows wired-OR logic or separate fault signaling to MCU reset and supervisor circuits. |
| SENSE Input Range | 0V to 6.5V - monitors 1.2V, 1.8V, 3.3V, and 5V rails directly without external scaling resistors. |
| Startup Delay | 300µs - ensures stable internal reference and comparator settling before output assertion, preventing false resets at power-on. |
Pinout & Package
SOT-6 (DDC) package, 2.90mm × 1.60mm body size, surface-mount, lead-free, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| UV | Active-low open-drain undervoltage output | Asserts low when SENSE falls below VIT–(UV); requires external pull-up to define logic-high level (up to 18V). |
| GND | Ground reference | Common return path for internal circuitry and SENSE input; must be low-impedance for accurate threshold tracking. |
| SENSE | Monitored supply input | High-impedance analog input (1.5µA max leakage) accepting 0–6.5V; connects directly to target rail without attenuation. |
| SET | Accuracy band selection input | Logic-level control: ≤250mV selects wider ±9% band; ≥750mV selects tighter ±4% band - enables runtime margin adjustment. |
| VDD | Device supply input | Power source (2–18V); decoupling with 0.1µF ceramic capacitor near pin required for noise immunity. |
| OV | Active-low open-drain overvoltage output | Asserts low when SENSE exceeds VIT+(OV); electrically isolated from UV for independent fault reporting. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to 125°C ambient operation - meets automotive electronics reliability requirements for engine bay and ADAS modules. |
| Internal resistor divider | Eliminates external threshold-setting resistors - reduces BOM count, PCB area, and accuracy degradation from resistor tolerance and drift. |
| User-configurable accuracy bands | SET pin toggles between ±4% and ±9% nominal thresholds - supports adaptive monitoring during boot-up and steady-state operation. |
| Independent UV/OV outputs | Enables distinct fault classification (e.g., UV → brownout, OV → regulator failure) - improves diagnostic coverage for ISO 26262 functional safety analysis. |
| Low propagation delay | 19µs (high-to-low), 35µs (low-to-high) - ensures timely response to fast transients in high-speed digital power domains like SoC and FPGA supplies. |
Applications
| Front-View Camera Power Monitoring | Radar System FPGA Supply Supervision |
|---|---|
Use Scenario: Monitors 1.2V and 1.8V power rails feeding image signal processors and MIPI interfaces in automotive front cameras. IC Role / Device Role / Timing Role: Window voltage detector asserting independent UV/OV signals to camera ECU upon rail deviation beyond ±4.9% (worst-case including accuracy and hysteresis). Use Value: Prevents corrupted image capture or sensor lockup by triggering controlled shutdown before analog front-end or digital core enters undefined state. | Use Scenario: Supervises 3.3V auxiliary and 1.0V core supplies powering Xilinx Zynq-based radar processing units. IC Role / Device Role / Timing Role: Dual open-drain outputs feed separate reset inputs on FPGA and companion microcontroller - enabling differentiated recovery sequences. Use Value: Enables deterministic power-cycle coordination between processor, memory, and RF subsystems during overvoltage events caused by DC-DC converter faults. |
| Infotainment SoC Voltage Guard | Automotive Safety Domain Controller Reset Management |
Use Scenario: Guards 5V USB-C PD input and 3.3V system rail in head-unit infotainment platforms against load-dump-induced overvoltage. IC Role / Device Role / Timing Role: OV output tied to PMIC enable line; UV output connected to SoC nRESET - provides hardware-enforced power sequencing. Use Value: Avoids firmware-level reset arbitration delays by delivering sub-35µs hardware reset assertion - critical for meeting ASIL-B timing constraints. | Use Scenario: Implements redundant voltage supervision for dual-core safety MCU (e.g., TC3xx) where primary and backup power rails must be independently validated. IC Role / Device Role / Timing Role: SENSE and VDD pins separated per ISO 26262 requirement; SET pin driven by safety monitor to tighten thresholds post-boot. Use Value: Achieves >90% single-point fault coverage for power supply failures via hardware-level window detection - reducing software diagnostic burden. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar window voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV809E33DBVRQ1 | Single-channel undervoltage detector only; no overvoltage capability; 1% threshold accuracy; SOT-23-3 package. | Only suitable for UV-only monitoring; cannot replace TPS3702CX50QDDCRQ1 in window-detection use cases. | Select only if system requires standalone brownout protection with minimal footprint and cost. |
| TPS3700QDCKRQ1 | Dual comparator with external resistor programming; ±1.5% threshold accuracy; no internal hysteresis; SC70-6 package. | Requires external resistors and hysteresis network; higher design complexity and reduced accuracy vs. integrated solution. | Choose when custom threshold ratios or non-standard hysteresis values are needed beyond factory-fixed options. |
Compared with TLV809E33DBVRQ1 and TPS3700QDCKRQ1, the TPS3702CX50QDDCRQ1 delivers true window detection in a single chip with superior accuracy, built-in hysteresis, and automotive-qualified reliability - making it the optimal choice for ASIL-B compliant rail supervision where both over- and undervoltage faults must be distinguished.
Availability
TPS3702CX50QDDCRQ1 is available at Aetrix Electronics and suitable for automotive ADAS camera modules, radar processing units, infotainment head-units, and safety domain controllers requiring stable component supply under AEC-Q100 conditions.
Supply support for TPS3702CX50QDDCRQ1 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of automotive qualification expertise and broad portfolio of AEC-Q100 certified components.
The TPS3702-Q1 product line was designed specifically for high-accuracy, dual-threshold power supply monitoring in safety-critical automotive systems - addressing stringent ASIL-B requirements for front/rear-view cameras, radar, and domain controllers.
FAQ
What is the exact threshold voltage range supported by the TPS3702CX50QDDCRQ1?
The TPS3702CX50QDDCRQ1 is factory-configured for nominal monitored rails between 1V and 5V. Its internal thresholds scale proportionally: for a 3.3V rail, typical VIT–(UV) = 3.168V and VIT+(OV) = 3.432V (±4% nominal), with worst-case deviation of ±0.9% over temperature. The SENSE pin accepts 0–6.5V input, enabling direct monitoring without external dividers. Thresholds are fixed per part number and selected via the SET pin's logic level.
How does the SET pin affect the behavior of the TPS3702CX50QDDCRQ1?
The SET pin on the TPS3702CX50QDDCRQ1 selects between two factory-programmed accuracy bands: ≤250mV configures ±9% nominal thresholds (e.g., ±9.9% worst-case), while ≥750mV configures ±4% nominal thresholds (e.g., ±4.9% worst-case). This allows runtime adaptation - such as relaxing margins during cold-start and tightening them after stabilization - without changing hardware. The SET pin draws only 600nA, minimizing impact on control logic.
Can the UV and OV outputs of the TPS3702CX50QDDCRQ1 be connected together?
Yes, the UV and OV outputs of the TPS3702CX50QDDCRQ1 can be wired-OR'd together using a shared pull-up resistor, since both are active-low open-drain outputs. This creates a single fault signal that asserts low if either undervoltage or overvoltage occurs - simplifying interface to MCUs with limited interrupt pins. Ensure the combined sink current remains ≤10mA and pull-up voltage does not exceed 18V. Independent routing is preferred for diagnostic differentiation.
What is the maximum SENSE input voltage the TPS3702CX50QDDCRQ1 can monitor?
The TPS3702CX50QDDCRQ1 supports a SENSE input voltage range of 0V to 6.5V (absolute maximum 7.0V), independent of VDD. This allows direct monitoring of 1.2V, 1.8V, 3.3V, and 5V rails without external attenuation. Input bias current is ≤1.5µA, ensuring minimal loading. For rails above 6.5V, an external resistor divider is required - with divider current ≥100× ISENSE to preserve accuracy.
Does the TPS3702CX50QDDCRQ1 include built-in hysteresis, and what is its value?
Yes, the TPS3702CX50QDDCRQ1 includes factory-trimmed internal hysteresis of 0.55% of the nominal trip point (e.g., 18.15mV for a 3.3V rail). This hysteresis is applied to both UV and OV thresholds to prevent output oscillation near trip points due to noise or slow-rising/falling supplies. It is fixed and not user-adjustable - optimized to balance noise immunity and detection sensitivity for automotive power rails.
TPS3702CX50QDDCRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 5V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- -
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-THIN
TPS3702CX50QDDCRQ1 FAQ
1.How can I place an order for TPS3702CX50QDDCRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3702CX50QDDCRQ1 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 TPS3702CX50QDDCRQ1 reliable?
The price and inventory of TPS3702CX50QDDCRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3702CX50QDDCRQ1 is usually 5 days.
3.What payment methods are accepted for TPS3702CX50QDDCRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3702CX50QDDCRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS3702CX50QDDCRQ1?
TPS3702CX50QDDCRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3702CX50QDDCRQ1 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 TPS3702CX50QDDCRQ1?
For technical support, including TPS3702CX50QDDCRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3702CX50QDDCRQ1 requirements.
6.How does Aetrix verify that TPS3702CX50QDDCRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS3702CX50QDDCRQ1 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 TPS3702CX50QDDCRQ1 meets industry standards.
7.What is the process for return or replacement of TPS3702CX50QDDCRQ1?
All TPS3702CX50QDDCRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3702CX50QDDCRQ1, 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 TPS3702CX50QDDCRQ1 part is unused and in its original packaging.
Return procedure for TPS3702CX50QDDCRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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