Texas Instruments TPS38A0101DDDSKRQ1

Overview

TPS38A0101DDDSKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive dual-channel overvoltage/undervoltage detector with 2.7 V–65 V wide input range, 1 μA typical quiescent current, ±1.5% voltage threshold accuracy (2.7 V–36 V), and programmable sense/reset delays via external capacitors. It monitors battery rails in telematics control units and emergency call systems using independent SENSE1/SENSE2 inputs with 65 V-rated pins.

For engineers reviewing the TPS38A0101DDDSKRQ1 datasheet, TPS38A0101DDDSKRQ1 pinout, TPS38A0101DDDSKRQ1 application, or TPS38A0101DDDSKRQ1 equivalent, key selection criteria include dual OV/UV detection capability, 65 V SENSE pin rating, 1% accuracy at 800 mV threshold, programmable hysteresis (2–13%), and WSON-10 wettable flank package for AOI-compatible automotive PCB assembly.

Technical Context

The TPS38A0101DDDSKRQ1 implements two independent voltage monitoring channels with separate SENSE1/SENSE2 inputs and RESET1/RESET2 outputs. Each channel supports configurable OV or UV detection with user-selectable thresholds (800 mV or 2.7 V–36 V) and hysteresis options (2–13% or fixed 0.5–2.5 V). The device uses internal resistor dividers to eliminate external components for fixed-threshold operation.

Timing is controlled via external capacitors on CTS1/CTS2 (sense delay) and CTR1/CTR2 (reset delay), enabling adjustable delays from 1.28 ms to 1.28 s (sense) and 12.8 ms to 12.8 s (reset). Manual reset functionality is integrated into CTR1/CTR2 pins, and both RESET outputs support selectable active-low/high logic with open-drain or push-pull topology for Channel 1 and open-drain only for Channel 2.

Key Specifications

Pinout & Package

TPS38A0101DDDSKRQ1 is packaged in a 10-pin WSON (DSK) with 2.5 mm × 2.5 mm body size and wettable flanks for automated optical inspection. The central thermal pad is non-conductive to increase creepage between VDD and GND per IEC60664.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel automotive voltage supervisor applications.

Compared with TPS3808G33QDBVRQ1 and TLV809E33DBVR, the TPS38A0101DDDSKRQ1 uniquely delivers dual-channel 65 V SENSE capability, programmable timing, and AEC-Q100 Grade 1 compliance-making it the sole option for high-reliability automotive battery rail supervision requiring redundancy and transient immunity.

Availability

TPS38A0101DDDSKRQ1 is available at Aetrix Electronics and suitable for telematics control units, emergency call systems, and head unit and cluster applications requiring stable component supply, long-term automotive lifecycle support, and traceable sourcing.

Supply support for TPS38A0101DDDSKRQ1 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 leadership in automotive, industrial, and power management solutions.

The TPS38-Q1 product line was designed specifically for automotive voltage supervision, targeting high-reliability systems that require dual-rail monitoring, ultra-low quiescent current, and immunity to battery transients such as cold crank and load dump.

FAQ

What is the maximum continuous voltage rating for the SENSE pins on the TPS38A0101DDDSKRQ1?

The SENSE1 and SENSE2 pins on the TPS38A0101DDDSKRQ1 are rated for continuous operation up to 65 V, matching the VDD absolute maximum rating. This allows direct connection to automotive battery rails without external voltage dividers or clamping circuits, provided external protection limits transient voltages to ≤70 V per absolute maximum ratings.

Does the TPS38A0101DDDSKRQ1 support both overvoltage and undervoltage detection on each channel?

Yes, the TPS38A0101DDDSKRQ1 supports configurable overvoltage (OV) or undervoltage (UV) detection on both SENSE1 and SENSE2 inputs. The detection mode is set per channel via internal configuration options, enabling independent OV monitoring on one rail and UV monitoring on another within the same TPS38A0101DDDSKRQ1 device.

How is reset delay time programmed on the TPS38A0101DDDSKRQ1?

Reset delay time on the TPS38A0101DDDSKRQ1 is programmed using external capacitors connected to CTR1/MR and CTR2/MR pins. With internal resistance of 877–1147 kΩ, a 10 nF capacitor yields ~12.8 ms delay and a 10 μF capacitor yields ~12.8 s delay. Leaving the pin floating selects the shortest internal delay (~100 μs for 2.7–36 V thresholds).

What package type and dimensions does the TPS38A0101DDDSKRQ1 use?

The TPS38A0101DDDSKRQ1 uses a 10-pin WSON package (DSK variant) with nominal body size 2.5 mm × 2.5 mm and wettable flanks. The non-conductive thermal pad enhances creepage distance between VDD and GND per IEC60664, supporting AOI and low-resolution X-ray inspection in automotive manufacturing.

Is the TPS38A0101DDDSKRQ1 qualified for automotive applications?

Yes, the TPS38A0101DDDSKRQ1 is AEC-Q100 qualified as Grade 1, with operating ambient temperature range of –40°C to +125°C, HBM ESD classification Level 2 (±2000 V), and CDM ESD classification Level C7B (±750 V). It is explicitly designed for automotive systems including telematics, eCall, and body control modules.