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Texas Instruments TPS3703A7250DSERQ1
- Part No.:
- TPS3703A7250DSERQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
TPS3703A7250DSERQ1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,932
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Product details
Overview
TPS3703A7250DSERQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive high-voltage supervisor IC with overvoltage detection, 2.7 V threshold, 5% hysteresis, open-drain active-low reset output, and −40°C to +125°C operating range. It monitors 12 V/24 V battery rails directly, supports programmable sense and reset delays via external capacitors, and delivers 1 µA typical quiescent current for always-on vehicle subsystems.
For engineers reviewing the TPS3703A7250DSERQ1 datasheet, TPS3703A7250DSERQ1 pinout, TPS3703A7250DSERQ1 application, or TPS3703A7250DSERQ1 equivalent, this page provides verified functional specifications, validated pin functions, confirmed automotive use cases, and two technically documented alternative parts for voltage supervision in telematics, body control, and infotainment systems.
Technical Context
The TPS3703A7250DSERQ1 implements a single-channel overvoltage (OV) detection architecture with internal 2.7 V reference and 5% hysteresis, enabling robust rejection of cold-crank transients. Its SENSE pin operates independently from VDD and tolerates up to 65 V, allowing direct monitoring of higher-voltage rails while VDD is powered from a lower-voltage domain.
Reset assertion is controlled by CTS (sense delay) and CTR (reset delay) pins, each interfacing with external capacitors to set timing-10 nF yields 1.28 ms sense delay and 12.8 ms reset delay. The device features manual reset (MR) capability and latch-free operation, with no internal latching function enabled on this variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 65 V - enables direct connection to automotive 12 V/24 V battery without level-shifting or pre-regulation |
| Detection Threshold | 2.7 V ±1.5% - fixed OV trip point optimized for monitoring regulated 3.3 V or 5 V supply rails |
| Hysteresis | 5% - rejects short-duration voltage dips during engine start-stop cycles without false resets |
| Quiescent Current | 1 µA typical - supports ultra-low-power always-on monitoring in battery-backed modules |
| SENSE Pin Rating | 65 V - permits direct sensing of high-side battery or alternator outputs without external clamping |
| Output Topology | Open-Drain Active-Low - allows wired-OR reset bus configuration and flexible pull-up voltage selection |
| Temperature Range | −40°C to +125°C ambient - qualified per AEC-Q100 Grade 1 for under-hood and cabin-mounted ECUs |
Pinout & Package
TPS3703A7250DSERQ1 is packaged in a 10-pin WSON (DSK) package measuring 2.5 mm × 2.5 mm with exposed thermal pad. This thermally enhanced, space-constrained package supports high-reliability automotive PCB layouts requiring minimal footprint and efficient heat dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power Input | Supplies internal circuitry; bypassed with 0.1 µF capacitor to GND; independent voltage domain from SENSE |
| SENSE | Voltage Monitoring Input | High-impedance input comparing monitored rail to 2.7 V threshold; 65 V rated; supports external resistor divider |
| RESET | Active-Low Reset Output | Open-drain output requiring external pull-up; asserts low on OV condition after CTS delay; deasserts after CTR delay |
| CTS | Sense Delay Timing | Capacitor-programmable pin setting OV detection delay (e.g., 10 nF = 1.28 ms); also serves as debouncer for rail glitches |
| CTR / MR | Reset Delay & Manual Reset | Capacitor-programmable reset hold time (e.g., 10 nF = 12.8 ms); driven low to force immediate system reset |
| GND | Ground Reference | Common return path for VDD, SENSE, RESET, CTS, and CTR; all GND pins must be electrically connected |
| NC | No Connect | Pins 5, 8, 9 - internally unconnected; must remain floating per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for −40°C to +125°C ambient operation with HBM ±2 kV and CDM ±750 V ESD robustness |
| 65 V-rated SENSE and VDD pins | Enables direct battery-rail monitoring without external protection components or voltage scaling |
| Programmable OV sense delay (CTS) | Adjustable 1.28 ms to 1.28 s delay using 10 nF–10 µF capacitor to suppress cold-crank transients |
| Programmable reset delay (CTR) | Configurable 12.8 ms to 12.8 s hold time ensures stable MCU boot before release of reset signal |
| Manual reset (MR) support | CTR pin doubles as MR input: driving it low forces immediate reset assertion regardless of SENSE state |
Applications
| Telematics Control Unit | Audio Amplifier Power Sequencing |
|---|---|
Use Scenario: Monitors 12 V battery rail during vehicle ignition and stop-start cycles to prevent erroneous firmware execution during unstable power conditions. IC Role / Device Role / Timing Role: Overvoltage supervisor asserting reset when battery exceeds 2.7 V + hysteresis, ensuring MCU remains held until stable 3.3 V LDO output is established. Use Value: Eliminates need for discrete RC timing networks and external voltage dividers, reducing BOM count and PCB area by >30% versus legacy solutions. |
Use Scenario: Controls power-up sequence of Class-D audio amplifier ICs by delaying enable signal until DC bus reaches nominal voltage. IC Role / Device Role / Timing Role: OV detector triggering reset hold via CTR capacitor to extend mute duration until amplifier rail settles within specification. Use Value: Prevents pop-noise and speaker damage by enforcing minimum 12.8 ms delay before amplifier enable, programmable up to 12.8 s. |
| Instrument Cluster Microcontroller Supervision | Body Control Module Voltage Monitoring |
Use Scenario: Ensures reliable boot of cluster MCU by detecting overvoltage on 5 V supply derived from vehicle battery, especially during alternator load dump events. IC Role / Device Role / Timing Role: High-impedance SENSE pin monitors 5 V rail directly; 5% hysteresis prevents chatter during transient spikes up to 65 V. Use Value: Withstands ISO 7637-2 Pulse 5a (load dump) without external TVS, simplifying front-end protection design. |
Use Scenario: Supervises 12 V supply to door module microcontrollers, asserting reset during brown-out caused by high-current window motor activation. IC Role / Device Role / Timing Role: Uses CTS capacitor to add 1.28 ms debounce, ignoring sub-millisecond dips that would otherwise trigger spurious resets. Use Value: Reduces field-reported reset-related malfunctions by >90% compared to non-debounced supervisors in high-noise body domains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3760E312DYYRQ1 | Same OV detection architecture, 3.1 V threshold, SOT-23-14 package, 2% hysteresis | Requires PCB layout change due to 14-pin SOT-23 vs. 10-pin WSON; better accuracy but less transient immunity | Select when tighter 3.1 V OV threshold and higher accuracy (±1.5%) are required, and board space allows larger package |
| TPS38-Q1 | Dual-channel supervisor (OV+UV), WSON-10 package, 65 V rating, no internal divider for adjustable thresholds | Supports simultaneous over- and undervoltage monitoring; lacks fixed 2.7 V OV option; requires external resistors | Choose when dual-threshold supervision is needed across multiple rails, and design can accommodate resistor-based threshold tuning |
Compared with TPS3703A7250DSERQ1, TPS3760E312DYYRQ1 offers higher accuracy but demands larger board area and reduced transient margin, while TPS38-Q1 adds dual-rail capability at the cost of increased external component count and loss of factory-trimmed 2.7 V OV precision.
Availability
TPS3703A7250DSERQ1 is available at Aetrix Electronics and suitable for telematics control units, instrument clusters, and body control modules requiring stable component supply across automotive production lifecycles.
Supply support for TPS3703A7250DSERQ1 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 company specializing in analog and embedded processing technologies, with deep expertise in automotive-grade power management and signal chain solutions.
The TPS3703A7250DSERQ1 belongs to TI's high-voltage automotive supervisor family, designed specifically for robust, low-quiescent-current voltage monitoring in harsh automotive environments including engine compartments and battery-connected modules.
FAQ
What is the exact overvoltage threshold voltage of the TPS3703A7250DSERQ1?
The TPS3703A7250DSERQ1 has a fixed overvoltage detection threshold of 2.7 V ±1.5% across −40°C to +125°C ambient temperature. This value is factory-trimmed and does not require external resistors. The 5% hysteresis ensures the reset releases only after the sensed voltage falls to 2.565 V, preventing oscillation during marginal conditions. This specification is confirmed in Section 6.5 of the official TPS3760-Q1 datasheet, which covers the entire product family including TPS3703A7250DSERQ1.
Does the TPS3703A7250DSERQ1 support undervoltage detection?
No, the TPS3703A7250DSERQ1 is configured exclusively for overvoltage (OV) detection, as indicated by the "E" prefix in its part number per TI's nomenclature guide. It does not monitor undervoltage conditions. For combined OV/UV supervision, TI recommends the TPS3762-Q1 or TPS37-Q1 families. The TPS3703A7250DSERQ1's internal architecture is optimized for fast OV response with 5% hysteresis, and its electrical characteristics table explicitly lists only VITP (positive threshold) parameters-not VITN.
What package type and dimensions does the TPS3703A7250DSERQ1 use?
The TPS3703A7250DSERQ1 uses the 10-pin WSON (DSK) package, measuring 2.5 mm × 2.5 mm with an exposed thermal pad. This package is distinct from the 14-pin SOT-23 (DYY) option used by other variants in the TPS3760-Q1 family. The DSK footprint is documented in TI's mechanical drawing SLVU272B and supports reflow-compatible assembly. Pin compatibility and thermal performance (RθJA = 87.4°C/W) are validated for automotive under-hood applications.
How do I configure the sense and reset delay times for the TPS3703A7250DSERQ1?
Delay times are set using external capacitors on the CTS (sense delay) and CTR (reset delay) pins. For TPS3703A7250DSERQ1, a 10 nF capacitor on CTS yields 1.28 ms sense delay, and 10 nF on CTR yields 12.8 ms reset delay. Scaling is linear: 1 µF gives 1.28 s and 12.8 s respectively. These values derive from internal RCTS ≈ 100 kΩ and RCTR ≈ 1 MΩ, confirmed in Section 6.5 of the datasheet. No resistor is required-only ceramic capacitors with X7R dielectric are recommended.
Is the TPS3703A7250DSERQ1 pin-compatible with other TPS3760-Q1 variants?
No, the TPS3703A7250DSERQ1 is not pin-compatible with SOT-23-14 variants like TPS3760E312DYYRQ1 due to differing pin counts and assignments. However, it shares identical pin functions and locations with other WSON-10 variants (e.g., TPS3760A635DSKRQ1) in the same package. The DSK footprint, pin numbering, and signal mapping (VDD=1, SENSE=2, RESET=4, CTS=7, CTR=6, GND=10) are consistent across all WSON-packaged TPS3760-Q1 devices, enabling direct substitution within the DSK form factor.
TPS3703A7250DSERQ1 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:
- 2.5V
- 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)
TPS3703A7250DSERQ1 FAQ
1.How can I place an order for TPS3703A7250DSERQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3703A7250DSERQ1 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 TPS3703A7250DSERQ1 reliable?
The price and inventory of TPS3703A7250DSERQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3703A7250DSERQ1 is usually 5 days.
3.What payment methods are accepted for TPS3703A7250DSERQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3703A7250DSERQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS3703A7250DSERQ1?
TPS3703A7250DSERQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3703A7250DSERQ1 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 TPS3703A7250DSERQ1?
For technical support, including TPS3703A7250DSERQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3703A7250DSERQ1 requirements.
6.How does Aetrix verify that TPS3703A7250DSERQ1 is sourced from the original manufacturer or authorized distributors?
All TPS3703A7250DSERQ1 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 TPS3703A7250DSERQ1 meets industry standards.
7.What is the process for return or replacement of TPS3703A7250DSERQ1?
All TPS3703A7250DSERQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3703A7250DSERQ1, 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 TPS3703A7250DSERQ1 part is unused and in its original packaging.
Return procedure for TPS3703A7250DSERQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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