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Texas Instruments TPS3703A5290DSERQ1
- Part No.:
- TPS3703A5290DSERQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
TPS3703A5290DSERQ1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,945
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Product details
Overview
TPS3703A5290DSERQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive overvoltage/undervoltage reset IC in a 6-pin WSON (DSE) package, featuring ±0.7% threshold accuracy across –40°C to +125°C, 7 µA max quiescent current, fixed 2.9 V UV/OV window threshold with ±5% tolerance, and dual-mode reset time delay (10 ms default or programmable via CT pin capacitor).
For engineers reviewing the TPS3703A5290DSERQ1 datasheet, TPS3703A5290DSERQ1 pinout, TPS3703A5290DSERQ1 application, or TPS3703A5290DSERQ1 equivalent, this device delivers high-accuracy voltage supervision for safety-critical automotive power rails-especially where narrow supply margins, low-power operation, and functional safety compliance are required.
Technical Context
The TPS3703A5290DSERQ1 integrates two precision comparators with a trimmed internal resistor divider and reference, eliminating external components for threshold setting. Its architecture supports simultaneous OV and UV detection within a fixed 2.9 V window (VIT– = 2.755 V, VIT+ = 3.045 V), with built-in hysteresis (0.55% typical) and glitch immunity (3.5 µs at 5% overdrive).
Reset assertion is latched and open-drain active-low; timing is configurable via CT pin-floating for 10 ms fixed delay or connected to capacitor for user-programmable delay (e.g., 1 nF → ~1.2 ms). SENSE and VDD pins are separate, enabling redundant monitoring in ASIL-B/C systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.7 V to 5.5 V - supports wide automotive rail voltages including 3.3 V and 5 V domains. |
| UV/OV Threshold | 2.9 V window (VIT– = 2.755 V, VIT+ = 3.045 V) - fixed ±5% tolerance enables precise 2.9 V rail supervision without external resistors. |
| Threshold Accuracy | ±0.7% over –40°C to +125°C - ensures reliable reset assertion across full automotive temperature range. |
| Quiescent Current | 7 µA max - minimizes standby power in always-on vehicle modules like ADAS domain controllers. |
| Reset Time Delay | 10 ms (CT floating) or programmable (CT-to-GND capacitor) - provides flexibility for system-level reset timing coordination. |
| Output Type | Open-drain active-low RESET - allows wired-OR configuration and interface with diverse logic families (1.8 V to 5.5 V pull-up). |
| ESD Rating | HBM ±2000 V, CDM ±500 V - meets AEC-Q100 stress requirements for robustness in automotive assembly and operation. |
Pinout & Package
TPS3703A5290DSERQ1 uses the WSON-6 (DSE) package: 1.50 mm × 1.50 mm, 0.5 mm pitch, thermally enhanced bottom-exposed pad. Pin 1 marked by dot; top-side view with pin 1 at top-left.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SENSE | Monitor input | Direct connection to regulated rail (e.g., 2.9 V core); triggers RESET when voltage falls below 2.755 V or rises above 3.045 V. |
| 2 - VDD | Supply input | Power source for internal circuitry; must be ≥1.7 V for operation; separate from SENSE to support redundancy. |
| 3 - CT | Time delay control | Floating = 10 ms fixed delay; pulled to VDD = 200 ms; capacitor to GND = programmable delay (e.g., 1 nF ≈ 1.2 ms). |
| 4 - RESET | Active-low output | Open-drain, requires external pull-up; asserts low during OV/UV fault or MR activation; latched until SENSE returns to window. |
| 5 - GND | Ground reference | Common return path for VDD, SENSE, CT, MR, and RESET; must be low-impedance for noise immunity. |
| 6 - MR | Manual reset input | Pull low (<0.3 V) to force immediate RESET assertion; internally pulled up to VDD if left floating or tied high. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation - suitable for engine bay, ADAS sensor, and digital cockpit applications. |
| Integrated resistor divider | Eliminates external threshold-setting resistors - improves accuracy, reduces BOM count, and avoids resistor tolerance stacking errors. |
| Internal glitch immunity | 3.5 µs rejection of transients on SENSE - prevents false resets from EMI or load-switching noise in automotive environments. |
| Latching RESET output | Holds low until SENSE re-enters valid window - ensures processor remains held in reset until stable supply is confirmed. |
| Functional safety documentation | Available FIT data, FMEA reports, and safety manual - supports ISO 26262 ASIL-B system integration without additional qualification effort. |
Applications
| ADAS Domain Controller Power Supervision | Digital Cockpit SoC Reset Management |
|---|---|
|
Use Scenario: Monitors 2.9 V core rail powering vision processor and AI accelerator in centralized ADAS domain controller. IC Role / Device Role / Timing Role: Dual-threshold supervisor asserting latched RESET during OV/UV events; 10 ms delay ensures clean power stabilization before release. Use Value: Prevents corrupted boot sequences caused by marginal 2.9 V rail droop during cold cranking or load transients. |
Use Scenario: Supervises 2.9 V I/O supply for infotainment SoC in digital instrument cluster with multi-display output. IC Role / Device Role / Timing Role: Window monitor with ±5% tolerance aligned to SoC's 2.9 V specification; CT pin configured for 10 ms fixed delay. Use Value: Guarantees deterministic reset behavior under battery voltage fluctuations (e.g., start-stop cycles), avoiding display artifacts or firmware hangs. |
| HEV/EV Battery Management Interface | Automotive Camera Module Power Sequencing |
|
Use Scenario: Validates 2.9 V auxiliary rail feeding CAN FD transceiver and isolated ADC in high-voltage battery pack controller. IC Role / Device Role / Timing Role: Redundant supervision using separate SENSE and VDD pins; MR pin used for controlled system-wide reset via microcontroller. Use Value: Enables fail-safe communication shutdown when 2.9 V rail deviates - critical for ASIL-D–related diagnostics and isolation integrity. |
Use Scenario: Ensures clean power-up of 2.9 V image sensor and ISP in surround-view camera module before frame capture begins. IC Role / Device Role / Timing Role: High-accuracy (±0.7%) window detector with 10 ms delay synchronized to camera boot sequence timer. Use Value: Eliminates sensor initialization failures due to slow-rising or noisy 2.9 V rail, improving first-frame reliability in parking assist systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3703A5330DSERQ1 | Same package and architecture, but 3.3 V window threshold (±5%) instead of 2.9 V. | Designed for 3.3 V rail supervision; not interchangeable without board-level voltage revalidation. | Select only if target rail is 3.3 V and same timing/configuration is required. |
| TLV809E29DBVR | Single-channel undervoltage-only supervisor; 2.93 V threshold, ±1.5% accuracy, no OV detection or CT programmability. | Lacks overvoltage protection and window supervision capability - insufficient for ASIL-B safety goals requiring dual-fault coverage. | Use only in cost-sensitive non-safety applications where OV detection is unnecessary. |
Compared with TPS3703A5290DSERQ1, the TPS3703A5330DSERQ1 offers identical functionality at a different voltage point, while TLV809E29DBVR sacrifices OV detection, accuracy, and programmability for lower cost and simpler implementation.
Availability
TPS3703A5290DSERQ1 is available at Aetrix Electronics and suitable for automotive ADAS domain controllers, digital cockpit systems, HEV/EV battery management interfaces, and camera module power sequencing requiring stable component supply and AEC-Q100 compliance.
Supply support for TPS3703A5290DSERQ1 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, embedded processing, and automotive-grade ICs, with decades of experience delivering high-reliability solutions for mission-critical systems.
The TPS3703-Q1 product line was designed specifically for automotive functional safety applications-delivering accurate, redundant, and configurable voltage supervision for ASIL-B/C systems operating on low-voltage rails with tight tolerances.
FAQ
What is the exact overvoltage and undervoltage threshold for TPS3703A5290DSERQ1?
The TPS3703A5290DSERQ1 has a fixed 2.9 V window threshold with ±5% tolerance: VIT– (undervoltage) = 2.755 V and VIT+ (overvoltage) = 3.045 V, specified over –40°C to +125°C with ±0.7% accuracy. These values are factory-trimmed and require no external components - the '5290' in the part number directly encodes the 2.9 V nominal window.
How does the CT pin configure the reset time delay for TPS3703A5290DSERQ1?
For TPS3703A5290DSERQ1, the CT pin selects reset delay mode: floating = 10 ms fixed delay; pulled to VDD via 10 kΩ resistor = 200 ms fixed delay; connected to capacitor to GND = programmable delay (e.g., 1 nF yields ~1.2 ms). The device re-evaluates CT configuration each time SENSE re-enters the valid window.
Is TPS3703A5290DSERQ1 qualified for automotive safety standards?
Yes - TPS3703A5290DSERQ1 is AEC-Q100 Grade 1 qualified (–40°C to +125°C), HBM ±2000 V / CDM ±500 V ESD rated, and designated functional safety-capable with supporting documentation (FIT data, FMEA, safety manual) for ISO 26262 ASIL-B system integration.
Can TPS3703A5290DSERQ1 monitor a 2.9 V rail while powered from a different supply?
Yes - TPS3703A5290DSERQ1 supports independent SENSE and VDD pins: SENSE monitors the 2.9 V rail directly, while VDD can be supplied from another stable rail (e.g., 3.3 V or 5 V). This separation enables true redundancy and meets automotive functional safety requirements for independent monitoring paths.
What is the maximum capacitive load the RESET pin of TPS3703A5290DSERQ1 can drive?
The RESET pin of TPS3703A5290DSERQ1 is an open-drain output rated for ±40 mA sink current. With a 10 kΩ pull-up to 3.3 V, it drives ≤10 pF load with <0.25 V VOL at 0.4 mA. For heavier loads, reduce pull-up resistance or add a buffer; total capacitance should remain ≤50 pF to maintain timing integrity per datasheet Figure 7-2.
TPS3703A5290DSERQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 6-WFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.9V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- Adjustable/Selectable
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-WSON (1.5x1.5)
TPS3703A5290DSERQ1 FAQ
1.How can I place an order for TPS3703A5290DSERQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3703A5290DSERQ1 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 TPS3703A5290DSERQ1 reliable?
The price and inventory of TPS3703A5290DSERQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3703A5290DSERQ1 is usually 5 days.
3.What payment methods are accepted for TPS3703A5290DSERQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3703A5290DSERQ1 transactions.
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TPS3703A5290DSERQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3703A5290DSERQ1 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 TPS3703A5290DSERQ1?
For technical support, including TPS3703A5290DSERQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3703A5290DSERQ1 requirements.
6.How does Aetrix verify that TPS3703A5290DSERQ1 is sourced from the original manufacturer or authorized distributors?
All TPS3703A5290DSERQ1 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 TPS3703A5290DSERQ1 meets industry standards.
7.What is the process for return or replacement of TPS3703A5290DSERQ1?
All TPS3703A5290DSERQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3703A5290DSERQ1, 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 TPS3703A5290DSERQ1 part is unused and in its original packaging.
Return procedure for TPS3703A5290DSERQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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