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Texas Instruments TPS3703C7115DSERQ1
- Part No.:
- TPS3703C7115DSERQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
TPS3703C7115DSERQ1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TPS3703C7115DSERQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive high-voltage supervisor IC with overvoltage detection, 3.1 V threshold (±1.5%), 5% hysteresis, open-drain active-low RESET output, and programmable sense/reset delays via external capacitors. It operates from 2.7 V to 65 V supply, draws 1 µA typical quiescent current, and monitors 12 V/24 V battery rails in telematics control units.
For engineers reviewing the TPS3703C7115DSERQ1 datasheet, TPS3703C7115DSERQ1 pinout, TPS3703C7115DSERQ1 application, or TPS3703C7115DSERQ1 equivalent, this device supports precise OV monitoring with cold-crank transient immunity, flexible delay tuning, and functional safety documentation support for ISO 26262 ASIL-B system integration.
Technical Context
The TPS3703C7115DSERQ1 implements a single-channel overvoltage (OV) detector with fixed 3.1 V threshold and 5% hysteresis, enabling reliable rejection of automotive battery transients such as start-stop dips and load-dump spikes. Its SENSE pin accepts up to 65 V directly, independent of VDD, supporting redundant monitoring architectures.
Delay timing is set by external capacitors on CTS (sense delay) and CTR (reset delay), with internal resistances of 100 kΩ and 1000 kΩ respectively - yielding 1.28 ms to 1.28 s and 12.8 ms to 12.8 s ranges. The open-drain RESET output requires an external pull-up and asserts low upon OV detection after CTS delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.7 V to 65 V - enables direct connection to 12 V/24 V automotive battery without level-shifting or regulation. |
| Voltage Threshold | 3.1 V ±1.5% - fixed OV trip point optimized for monitoring regulated 3.3 V rails or battery-derived supplies. |
| Hysteresis | 5% - provides 155 mV hysteresis to prevent false resets during slow-rising/falling transients like cold crank. |
| Quiescent Current | 1 µA typical - ensures minimal battery drain in always-on automotive modules with >10-year standby life. |
| SENSE Pin Rating | 65 V - allows direct high-side monitoring of battery or DC-DC output without external clamping diodes. |
| Output Topology | Open-Drain Active-Low - supports wired-OR reset buses and compatibility with legacy MCU reset inputs requiring pull-up. |
| Operating Temperature | –40°C to +125°C ambient - meets AEC-Q100 Grade 1 requirements for under-hood and infotainment applications. |
Pinout & Package
TPS3703C7115DSERQ1 is packaged in a 14-pin SOT-23 (DYY) measuring 4.1 mm × 1.9 mm, optimized for space-constrained automotive PCBs. All GND pins (8, 13) must be connected to board ground; NC pins (2, 4, 5, 7, 11, 12, 14) are unconnected and must remain floating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Power Input | Bypassed with 0.1 µF capacitor to GND; supplies internal circuitry independently of SENSE voltage. |
| SENSE (Pin 3) | Voltage Monitoring Input | High-impedance input detecting OV condition at 3.1 V; tolerates 65 V continuous, no external divider needed. |
| RESET (Pin 6) | Reset Output | Open-drain active-low signal asserting after CTS delay upon OV detection; requires external pull-up resistor. |
| CTS (Pin 10) | Sense Delay Timing | Connects to ground-referenced capacitor to set OV detection delay (1.28 ms to 1.28 s); also debounces rail glitches. |
| CTR/MR (Pin 9) | Reset Delay & Manual Reset | Capacitor sets RESET deassertion delay (12.8 ms to 12.8 s); driven low forces immediate reset assertion. |
| GND (Pins 8, 13) | Ground Reference | Low-impedance return path for all internal circuits; both pins must be electrically tied to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C operation with HBM ±2 kV and CDM ±750 V ESD robustness in automotive environments. |
| Functional Safety Capability | Documentation package available to support ISO 26262 ASIL-B system-level safety analysis and FMEDA reporting. |
| 65 V-rated SENSE and VDD pins | Enables direct high-side monitoring of 24 V battery or DC-DC outputs without external voltage scaling or protection. |
| Programmable dual timing | Independent CTS (sense) and CTR (reset) capacitor inputs allow precise tuning of fault response and recovery timing. |
| No external resistor divider required | Integrated precision voltage divider eliminates BOM cost, leakage error, and layout area for fixed-threshold variants. |
Applications
| Telematics Control Unit (TCU) | Audio Amplifier Module |
|---|---|
Use Scenario: Monitors 3.3 V microcontroller supply rail during vehicle ignition cycles and load-dump events. IC Role / Device Role / Timing Role: Overvoltage supervisor asserting RESET when rail exceeds 3.1 V + hysteresis, preventing MCU latch-up or data corruption. Use Value: 5% hysteresis rejects 155 mV transients common during alternator regulation spikes, ensuring stable boot sequencing. | Use Scenario: Protects Class-D amplifier ICs from overvoltage damage during 12 V battery surges in premium audio systems. IC Role / Device Role / Timing Role: High-side OV detector on amplifier VCC rail, triggering shutdown before internal FETs exceed safe operating area. Use Value: 65 V SENSE rating allows direct connection without attenuation networks, preserving fast 1.28 ms minimum detection time. |
| Head Unit & Digital Cluster | Body Control Module (BCM) |
Use Scenario: Supervises 5 V power domain feeding display controllers and touch processors in instrument clusters. IC Role / Device Role / Timing Role: Fixed 3.1 V OV monitor with programmable CTS delay to ignore brief 5 V regulator overshoot during power-up. Use Value: 1 µA quiescent current minimizes parasitic drain on always-on backup battery, extending sleep-mode lifetime. | Use Scenario: Detects overvoltage on LIN bus power rail or body electronics sub-systems exposed to battery transients. IC Role / Device Role / Timing Role: Redundant OV supervisor with independent VDD/SENSE paths, enhancing fault tolerance per ISO 26262 requirements. Use Value: Dual-path architecture allows VDD to run from 3.3 V logic rail while SENSE monitors 12 V battery - eliminating shared failure modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar overvoltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3760E312DYYRQ1 | Same 3.1 V OV threshold, 2% hysteresis, open-drain output, but no manual reset (MR) capability. | Lacks CTR/MR pin functionality; cannot support forced system reset or external push-button reset initiation. | Select when MR is unnecessary and tighter 2% hysteresis improves noise margin in low-transient environments. |
| TPS3760H279DYYRQ1 | 2.7 V OV threshold, 9% hysteresis, push-pull active-high output - different threshold, hysteresis, and output polarity. | Requires redesign of reset interface logic and pull-up/pull-down network; not drop-in compatible. | Choose only if system requires higher hysteresis for extreme cold-crank immunity or active-high reset signaling. |
Compared with TPS3703C7115DSERQ1, TPS3760E312DYYRQ1 offers reduced hysteresis and omits MR, simplifying design where manual reset is unused; TPS3760H279DYYRQ1 shifts threshold and output topology, demanding full interface revalidation.
Availability
TPS3703C7115DSERQ1 is available at Aetrix Electronics and suitable for telematics control units, audio amplifier modules, and head unit & cluster systems requiring stable component supply across automotive production lifecycles.
Supply support for TPS3703C7115DSERQ1 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 delivering analog, embedded processing, and automotive ICs with deep expertise in high-reliability power management and supervision solutions.
The TPS3760-Q1 product line delivers AEC-Q100 qualified high-voltage supervisors for automotive battery monitoring, designed specifically to replace discrete resistor-divider + comparator solutions with integrated accuracy, low IQ, and transient-hardened timing.
FAQ
What is the exact voltage threshold and hysteresis of the TPS3703C7115DSERQ1?
The TPS3703C7115DSERQ1 has a fixed overvoltage (OV) detection threshold of 3.1 V with ±1.5% accuracy across –40°C to +125°C, and 5% hysteresis - resulting in a 155 mV hysteresis band centered at 3.1 V. This is confirmed in TI's SBVS419B datasheet Table 4-1 and Section 6.5 Electrical Characteristics.
Does the TPS3703C7115DSERQ1 require external resistors for voltage sensing?
No, the TPS3703C7115DSERQ1 does not require external resistors for voltage sensing. It integrates a precision internal voltage divider optimized for its fixed 3.1 V OV threshold, eliminating BOM cost, leakage error, and PCB area. External resistors are only needed for adjustable-threshold variants, not TPS3703C7115DSERQ1.
What package type and pin count does the TPS3703C7115DSERQ1 use?
The TPS3703C7115DSERQ1 uses a 14-pin SOT-23 (DYY) package measuring 4.1 mm × 1.9 mm. Pin configuration matches the DYY variant shown in Figure 5-2 of the datasheet, with VDD at Pin 1, SENSE at Pin 3, RESET at Pin 6, CTS at Pin 10, CTR/MR at Pin 9, and dual GND at Pins 8 and 13.
Can the TPS3703C7115DSERQ1 monitor voltages higher than its VDD supply?
Yes, the TPS3703C7115DSERQ1 can monitor voltages higher than its VDD supply. Its SENSE and VDD pins are independently rated for 65 V continuous operation, allowing VDD to be powered from a 3.3 V or 5 V rail while SENSE monitors a 12 V or 24 V battery - a key feature for redundant automotive monitoring architectures.
Is the TPS3703C7115DSERQ1 qualified for automotive safety-critical systems?
Yes, the TPS3703C7115DSERQ1 is AEC-Q100 Grade 1 qualified (–40°C to +125°C) and explicitly labeled "Functional Safety-Capable" in TI's official documentation. Functional safety documentation - including FIT rate, failure mode analysis, and safety manual - is available to support ISO 26262 ASIL-B system integration.
TPS3703C7115DSERQ1 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:
- 1.15V
- 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)
TPS3703C7115DSERQ1 FAQ
1.How can I place an order for TPS3703C7115DSERQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3703C7115DSERQ1 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 TPS3703C7115DSERQ1 reliable?
The price and inventory of TPS3703C7115DSERQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3703C7115DSERQ1 is usually 5 days.
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TPS3703C7115DSERQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3703C7115DSERQ1 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 TPS3703C7115DSERQ1?
For technical support, including TPS3703C7115DSERQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3703C7115DSERQ1 requirements.
6.How does Aetrix verify that TPS3703C7115DSERQ1 is sourced from the original manufacturer or authorized distributors?
All TPS3703C7115DSERQ1 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 TPS3703C7115DSERQ1 meets industry standards.
7.What is the process for return or replacement of TPS3703C7115DSERQ1?
All TPS3703C7115DSERQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3703C7115DSERQ1, 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 TPS3703C7115DSERQ1 part is unused and in its original packaging.
Return procedure for TPS3703C7115DSERQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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