Texas Instruments TPS38B4848EEDSKRQ1

Overview

TPS38B4848EEDSKRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive dual-channel overvoltage/undervoltage detector with 65 V input rating, 1 μA typical quiescent current, ±1.5% threshold accuracy (2.7–36 V range), 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 TPS38B4848EEDSKRQ1 datasheet, TPS38B4848EEDSKRQ1 pinout, TPS38B4848EEDSKRQ1 application, or TPS38B4848EEDSKRQ1 equivalent, this page delivers verified package mapping (WSON-10 DSK), confirmed dual OV/UV detection architecture, validated timing parameters (e.g., 1.28 ms–1.28 s sense delay), and real-world automotive system integration guidance.

Technical Context

The TPS38B4848EEDSKRQ1 implements two independent voltage monitoring channels with configurable OV/UV detection logic per channel, each supported by dedicated CTSx (sense delay) and CTRx/MR (reset delay/manual reset) pins. Its internal resistor divider eliminates external components for fixed-threshold variants while maintaining high-impedance SENSE inputs (≤2 µA max I_SENSE) for external divider flexibility.

Each channel supports selectable output topology: Channel 1 offers open-drain or push-pull with active-high/active-low options; Channel 2 is open-drain only. Built-in hysteresis (2–13% or fixed 0.5–2.5 V) prevents false triggering during cold-crank transients, and both SENSE and RESET pins are rated to 65 V-enabling direct connection to 12 V/24 V automotive battery systems without level-shifting.

Key Specifications

Pinout & Package

TPS38B4848EEDSKRQ1 is packaged in a 10-pin WSON (DSK) with 2.5 mm × 2.5 mm body size and wettable flanks for AOI compatibility. The central thermal pad is non-conductive to meet IEC60664 creepage requirements between VDD and GND.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV809EYZTR and MAX6373KA+T, the TPS38B4848EEDSKRQ1 uniquely combines AEC-Q100 Grade 1 qualification, 65 V input tolerance, dual independent OV/UV channels with programmable delays, and manual reset capability-making it the only option suitable for high-reliability automotive power-rail supervision where redundancy, low IQ, and transient immunity are mandatory.

Availability

TPS38B4848EEDSKRQ1 is available at Aetrix Electronics and suitable for telematics control units, emergency call systems, and audio amplifier power management requiring stable component supply across automotive production lifecycles.

Supply support for TPS38B4848EEDSKRQ1 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-grade ICs and functional safety solutions.

The TPS38-Q1 product line was designed specifically for automotive power-rail supervision, delivering high-voltage tolerance, ultra-low quiescent current, and AEC-Q100-compliant reliability in compact WSON and SOT-23 packages.

FAQ

What is the maximum input voltage rating for the SENSE pins on the TPS38B4848EEDSKRQ1?

The SENSE1 and SENSE2 pins on the TPS38B4848EEDSKRQ1 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 clamping circuits, provided external protection limits voltage to ≤70 V per absolute maximum ratings. The device itself contains no internal clamps, so external TVS diodes or Zener networks must enforce this limit.

How does the TPS38B4848EEDSKRQ1 achieve ±1.5% threshold accuracy across temperature?

The TPS38B4848EEDSKRQ1 achieves ±1.5% threshold accuracy (for 2.7–36 V ranges) through factory-trimmed internal voltage references and matched resistor ladder networks, validated across –40°C to +125°C ambient operating temperature. This specification is guaranteed under AEC-Q100 Grade 1 testing and reflects worst-case deviation including process variation, voltage, and temperature effects-not just typical behavior at 25°C.

Can the TPS38B4848EEDSKRQ1 monitor different voltage rails simultaneously?

Yes, the TPS38B4848EEDSKRQ1 monitors two independent voltage rails simultaneously via SENSE1 and SENSE2 inputs. Each channel supports configurable OV/UV detection logic, separate sense/reset delay timing (via CTS1/CTS2 and CTR1/CTR2), and distinct output topologies-enabling redundant supervision of primary and backup supplies in safety-critical automotive ECUs without cross-talk or shared timing constraints.

What is the purpose of the NC pad in the TPS38B4848EEDSKRQ1 WSON package?

The NC pad in the TPS38B4848EEDSKRQ1 WSON (DSK) package is a non-conductive thermal pad with no internal electrical connection. It may be connected to PCB ground or left floating to optimize thermal performance and meet IEC60664 creepage requirements between VDD and GND. Unlike conductive thermal pads, this NC pad does not serve as a signal or power path.

Does the TPS38B4848EEDSKRQ1 support manual reset functionality?

Yes, the TPS38B4848EEDSKRQ1 supports manual reset via the CTR1/MR and CTR2/MR pins. Driving either pin low forces immediate assertion of the corresponding RESET1 or RESET2 output, independent of sensed voltage conditions. These pins also serve as capacitor-programmable reset delay inputs when left floating or connected to timing capacitors-providing dual-mode functionality in a single terminal.