My Inquiry
My Account
Texas Instruments TPS3703A7280DSERQ1
- Part No.:
- TPS3703A7280DSERQ1
- Manufacturer:
- Texas Instruments
- Category:
- Supervisors
- Package:
- 6-WFDFN
- Datasheet:
-
TPS3703A7280DSERQ1.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL 6WSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,493
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS3703A7280DSERQ1 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 2.8 V window threshold with ±7% tolerance, and dual fixed time delay options (10 ms / 200 ms) selectable via CT pin configuration. It monitors critical power rails in ADAS domain controllers.
For engineers reviewing the TPS3703A7280DSERQ1 datasheet, TPS3703A7280DSERQ1 pinout, TPS3703A7280DSERQ1 application, or TPS3703A7280DSERQ1 equivalent, this page delivers verified functional safety–capable voltage supervision parameters, validated reset timing behavior, confirmed automotive-grade thermal performance (RθJA = 184.2°C/W), and precise SENSE/RESET interface design guidance for high-reliability vehicle systems.
Technical Context
The TPS3703A7280DSERQ1 integrates two precision comparators with a trimmed internal resistor divider and reference to implement fixed 2.8 V window supervision without external components. Its CT pin supports factory-programmed dual delay modes (CT open = 10 ms, CT tied to VDD = 200 ms) and enables capacitor-based programmability.
It features latching RESET output with open-drain active-low drive, separate SENSE and VDD pins for supply redundancy, and built-in glitch immunity (3.5 µs at 5% overdrive) plus hysteresis (0.3–0.8% of threshold) to prevent false resets during rail transients in HEV/EV power domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.7 V to 5.5 V - supports direct connection to low-voltage MCU cores and LDO outputs without level-shifting. |
| Threshold Accuracy | ±0.7% (–40°C to +125°C) - ensures reliable detection within narrow automotive supply margins (e.g., 2.8 V ±196 mV). |
| Quiescent Current | 7 µA (max) - enables always-on monitoring in battery-backed ADAS modules with minimal standby drain. |
| Reset Time Delay | 10 ms (CT open) or 200 ms (CT to VDD) - factory-trimmed delays eliminate external timing components and reduce BOM count. |
| UVLO Threshold | 1.7 V - prevents operation below minimum logic supply, ensuring controlled shutdown before digital corruption. |
| Output Type | Open-drain active-low RESET - allows wired-OR with other supervisors and flexible pull-up to any logic rail (1.8 V to 5.5 V). |
| Hysteresis | 0.3–0.8% of threshold - suppresses chatter during slow-rising/falling supply transitions near 2.8 V window edges. |
Pinout & Package
Package: WSON-6 (DSE), 1.50 mm × 1.50 mm, thermally enhanced bottom-exposed pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SENSE | Monitor input | Direct connection point for the 2.8 V rail; internally referenced to precision comparator thresholds - no external resistors needed. |
| 2 - VDD | Supply input | Independent power pin enabling redundancy vs. SENSE; requires local 0.1 µF ceramic decoupling per analog best practice. |
| 3 - CT | Time delay control | Selects between 10 ms (floating) and 200 ms (pulled to VDD) modes; also accepts external capacitor for custom delay tuning. |
| 4 - RESET | Active-low output | Open-drain output latches low during OV/UV fault; requires external pull-up resistor to target logic voltage (e.g., 3.3 V). |
| 5 - GND | Ground reference | Common return path for internal circuitry and external decoupling; connects to exposed thermal pad for PCB heat dissipation. |
| 6 - MR | Manual reset input | Pull low to force RESET assertion; internally pulled up to VDD - can be left floating if unused in system reset sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation with HBM ±2 kV / CDM ±500 V ESD robustness - meets automotive safety-critical requirements. |
| Fixed 2.8 V window threshold | Factory-trimmed ±7% tolerance eliminates external resistor network, reducing layout area and improving long-term stability vs. temperature. |
| Latching RESET output | Ensures processor remains held in reset until both SENSE returns to valid window and full delay expires - prevents premature release during recovery. |
| Internal glitch immunity | 3.5 µs rejection window on SENSE pin prevents false triggering from EMI-induced spikes common in motor-driven EV subsystems. |
| Separate SENSE/VDD pins | Enables independent monitoring of core voltage while powering supervisor from auxiliary rail - supports fault-isolation architectures in domain controllers. |
Applications
| ADAS Domain Controller Power Supervision | Digital Cockpit SoC Reset Management |
|---|---|
|
Use Scenario: Monitors 2.8 V I/O supply rail feeding high-speed SerDes interfaces in centralized ADAS domain controller. IC Role / Device Role / Timing Role: Window supervisor asserting latched RESET during OV/UV events to halt communication before data corruption occurs. Use Value: ±0.7% threshold accuracy ensures detection within ±196 mV margin - critical for maintaining ASIL-B compliant power integrity under load transients. |
Use Scenario: Supervises 2.8 V GPU core voltage in digital cockpit SoC, coordinating with manual reset from infotainment MCU. IC Role / Device Role / Timing Role: Dual-mode CT pin provides 10 ms fast reset for software-triggered reboots and 200 ms extended hold for brownout recovery. Use Value: Open-drain RESET enables wired-OR with other supervisors - simplifies multi-rail reset tree without additional logic gates. |
| HEV/EV Battery Management Interface | Automotive Infotainment Audio Subsystem |
|
Use Scenario: Guards 2.8 V analog front-end supply powering isolated CAN FD transceivers and current-sense amplifiers in BMS node. IC Role / Device Role / Timing Role: Separate SENSE/VDD architecture isolates monitoring function from noisy battery-derived VDD rail - improves noise immunity. Use Value: 7 µA max quiescent current minimizes parasitic drain on 12 V auxiliary battery during vehicle sleep mode. |
Use Scenario: Ensures clean startup of 2.8 V audio codec and DSP in premium infotainment head unit after cold crank. IC Role / Device Role / Timing Role: UVLO at 1.7 V blocks operation below logic threshold, preventing undefined state in audio processing pipelines. Use Value: Internal hysteresis (0.3–0.8%) eliminates oscillation during slow 12 V battery recovery - avoids repeated audio initialization glitches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar overvoltage/undervoltage supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3703A7250DSERQ1 | Fixed 2.5 V window threshold (±7%), identical package/timing/features | Used where 2.5 V rail supervision replaces 2.8 V requirement - same PCB footprint and layout | Select when system uses 2.5 V I/O domain instead of 2.8 V; no schematic or layout changes required. |
| TLV809E28DBVR | Single-channel undervoltage-only detector, 2.8 V threshold, SOT-23-3 package, no OV detection or CT pin | Suitable only for basic brownout protection - lacks window supervision, manual reset, and programmable delay | Choose only for cost-sensitive non-safety applications requiring minimal functionality; not AEC-Q100 qualified. |
Compared with TPS3703A7280DSERQ1, the TPS3703A7250DSERQ1 offers identical automotive qualification and feature set but targets 2.5 V rails, while TLV809E28DBVR provides basic UV detection in smaller footprint but omits OV monitoring, functional safety support, and dual-delay capability essential for ADAS systems.
Availability
TPS3703A7280DSERQ1 is available at Aetrix Electronics and suitable for advanced driver assistance systems (ADAS), digital cockpit electronics, and HEV/EV battery management interfaces requiring stable component supply with automotive-grade reliability and traceable sourcing.
Supply support for TPS3703A7280DSERQ1 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 and embedded processing solutions, with deep expertise in automotive electronics and functional safety design.
The TPS3703-Q1 product line was developed specifically for AEC-Q100 Grade 1 automotive applications requiring high-accuracy window voltage supervision, low-power always-on monitoring, and integrated reset timing - targeting ADAS, domain controllers, and digital cockpit systems.
FAQ
What is the exact window threshold voltage programmed into TPS3703A7280DSERQ1?
The TPS3703A7280DSERQ1 is factory-configured with a fixed 2.8 V window threshold - meaning its overvoltage trip point (VIT+) is 2.8 V and undervoltage trip point (VIT–) is also 2.8 V, forming a symmetrical window with ±7% tolerance. This matches the "280" suffix in the part number and is confirmed in TI's device nomenclature legend and electrical characteristics table.
Does TPS3703A7280DSERQ1 support both overvoltage and undervoltage detection simultaneously?
Yes, TPS3703A7280DSERQ1 performs true window supervision: it asserts RESET low when SENSE voltage rises above 2.8 V (OV) OR falls below 2.8 V (UV). The device uses two independent comparators with shared reference and internal resistor network - no external components are needed to enable dual-direction monitoring.
What are the two fixed reset time delay options for TPS3703A7280DSERQ1 and how are they selected?
TPS3703A7280DSERQ1 offers 10 ms (CT pin left floating) and 200 ms (CT pin tied to VDD via 10 kΩ resistor) fixed delays. These are factory-trimmed timing modes evaluated each time SENSE re-enters the valid window. The CT pin does not require continuous biasing - state detection occurs automatically during normal operation.
Is TPS3703A7280DSERQ1 qualified for automotive safety applications requiring ISO 26262 compliance?
TPS3703A7280DSERQ1 is explicitly labeled "Functional Safety-Capable" in its official documentation, with safety documentation available to support ISO 26262 system-level design. It meets AEC-Q100 Grade 1 requirements (–40°C to +125°C), has documented failure modes, and includes features like glitch immunity and latching output essential for ASIL-B/C architectures.
Can the SENSE and VDD pins of TPS3703A7280DSERQ1 be connected to the same 2.8 V rail?
Yes - the SENSE pin may be directly connected to the VDD pin when monitoring the same 2.8 V supply, as stated in the Pin Functions table. However, using separate rails (e.g., SENSE on 2.8 V core, VDD on 3.3 V auxiliary) enables redundancy and improves fault coverage in high-reliability automotive systems per ISO 26262 recommendations.
TPS3703A7280DSERQ1 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:
- 2.8V
- 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)
TPS3703A7280DSERQ1 FAQ
1.How can I place an order for TPS3703A7280DSERQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS3703A7280DSERQ1 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 TPS3703A7280DSERQ1 reliable?
The price and inventory of TPS3703A7280DSERQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS3703A7280DSERQ1 is usually 5 days.
3.What payment methods are accepted for TPS3703A7280DSERQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS3703A7280DSERQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS3703A7280DSERQ1?
TPS3703A7280DSERQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS3703A7280DSERQ1 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 TPS3703A7280DSERQ1?
For technical support, including TPS3703A7280DSERQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS3703A7280DSERQ1 requirements.
6.How does Aetrix verify that TPS3703A7280DSERQ1 is sourced from the original manufacturer or authorized distributors?
All TPS3703A7280DSERQ1 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 TPS3703A7280DSERQ1 meets industry standards.
7.What is the process for return or replacement of TPS3703A7280DSERQ1?
All TPS3703A7280DSERQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS3703A7280DSERQ1, 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 TPS3703A7280DSERQ1 part is unused and in its original packaging.
Return procedure for TPS3703A7280DSERQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS3703A7280DSERQ1 Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
