Texas Instruments TPS3703A5180DSERQ1

Overview

TPS3703A5180DSERQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-grade overvoltage and undervoltage reset IC in a 6-pin WSON (DSE) package. It monitors supply rails from 1.7 V to 5.5 V with ±0.7% threshold accuracy across –40°C to +125°C, fixed 1.8 V UV/OV window thresholds, ±5% window tolerance, and 10 ms / 200 ms dual fixed time delays. It enables reliable power sequencing in ADAS domain controllers.

For engineers reviewing the TPS3703A5180DSERQ1 datasheet, TPS3703A5180DSERQ1 pinout, TPS3703A5180DSERQ1 application, or TPS3703A5180DSERQ1 equivalent, this page delivers verified functional safety–capable voltage supervision specs, validated timing behavior, confirmed automotive qualification evidence, and real-world design implications for HEV/EV and digital cockpit systems.

Technical Context

The TPS3703A5180DSERQ1 integrates two precision comparators with internal trimmed resistor dividers and a stable voltage reference to implement a fixed 1.8 V window supervisor. Its CT pin selects between 10 ms (CT open) and 200 ms (CT tied to VDD) reset delays - no external capacitor required for these modes.

It features open-drain active-low RESET output with latch mode, separate SENSE and VDD pins for supply redundancy, and manual reset (MR) input with 0.3 V logic-low threshold. Glitch immunity of 3.5 µs on SENSE and 25 ns on MR ensures robust operation in noisy automotive environments.

Key Specifications

Pinout & Package

TPS3703A5180DSERQ1 uses a 1.50 mm × 1.50 mm, 6-pin WSON (DSE) package with wettable flanks for automated optical inspection. Thermal resistance R_θJA = 184.2°C/W supports operation up to +125°C ambient without forced airflow.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar overvoltage and undervoltage supervision applications.

Compared with TPS3703A5180DSERQ1, the A3180 variant offers tighter ±3% window tolerance at the expense of reduced noise margin, while TLV809E18DBZR sacrifices OV detection, CT programmability, and AEC-Q100 Grade 1 qualification - making it unsuitable for ASIL-B systems.

Availability

TPS3703A5180DSERQ1 is available at Aetrix Electronics and suitable for ADAS domain controllers, digital cockpit SoCs, and HEV/EV battery management systems requiring stable component supply with full automotive qualification traceability.

Supply support for TPS3703A5180DSERQ1 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 over 50 years of automotive IC expertise and ISO/TS 16949-certified manufacturing.

The TPS3703-Q1 product line delivers AEC-Q100 qualified, functional safety–capable voltage supervisors targeting ASIL-B automotive subsystems including ADAS, digital cockpits, and electrified powertrain controls.

FAQ

What is the exact overvoltage and undervoltage threshold configuration for TPS3703A5180DSERQ1?

The TPS3703A5180DSERQ1 is a fixed 1.8 V window supervisor with both overvoltage (VIT+) and undervoltage (VIT–) thresholds set to 1.8 V nominal. Its window tolerance is ±5%, meaning detection triggers if SENSE falls below 1.71 V or rises above 1.89 V. This configuration is factory-trimmed and requires no external components - the '5180' in the part number explicitly denotes 1.8 V thresholds with 5% tolerance.

How does the CT pin configure reset delay timing on TPS3703A5180DSERQ1?

On the TPS3703A5180DSERQ1, the CT pin selects between two factory-programmed reset delays: leaving CT open configures a 10 ms delay, while connecting CT to VDD (via 10 kΩ resistor) configures a 200 ms delay. No external capacitor is needed for either option. The device re-evaluates CT state each time SENSE re-enters the valid window, enabling dynamic delay selection during runtime.

Is TPS3703A5180DSERQ1 qualified for automotive use, and what grade applies?

Yes, TPS3703A5180DSERQ1 is AEC-Q100 qualified for automotive applications at Grade 1, covering ambient operating temperatures from –40°C to +125°C. It also meets HBM ±2000 V and CDM ±500 V ESD classification levels, and TI provides functional safety documentation (FIT rate, FMEA, diagnostic coverage) supporting ISO 26262 ASIL-B system integration.

Does TPS3703A5180DSERQ1 require external resistors to set its voltage thresholds?

No, TPS3703A5180DSERQ1 does not require external resistors. Its 1.8 V UV/OV thresholds are implemented using factory-trimmed internal resistor dividers and a precision voltage reference. This eliminates component count, board space, and accuracy degradation from external resistor tolerances - a key advantage over discrete supervisor solutions.

What is the function of the MR pin on TPS3703A5180DSERQ1, and how is it used?

The MR (Manual Reset) pin on TPS3703A5180DSERQ1 allows external assertion of RESET by pulling MR to ≤0.3 V (VMR_L). After MR is released, RESET deasserts only after the configured time delay (10 ms or 200 ms) expires - provided SENSE remains within the 1.8 V window. When unused, MR may be left floating due to its internal pull-up to VDD.