Texas Instruments TPS38B752933DSKR

Overview

TPS38B752933DSKR from Texas Instruments is a dual-channel, wide-input-voltage (2.7 V to 65 V) overvoltage/undervoltage detector with programmable sense and reset timing, 1% threshold accuracy at 800 mV, 1 μA typical quiescent current, and 65 V–rated SENSE/RESET pins - deployed in automotive battery monitoring and industrial PLC power-rail supervision.

For engineers reviewing the TPS38B752933DSKR datasheet, TPS38B752933DSKR pinout, TPS38B752933DSKR application, or TPS38B752933DSKR equivalent, this device supports dual independent OV/UV detection with user-adjustable hysteresis (2–13%), sense delay (1.28 ms to 1.28 s), and reset delay (12.8 ms to 12.8 s), plus manual reset capability on both channels for robust system-level fault recovery.

Technical Context

The TPS38B752933DSKR implements two independent voltage-monitoring channels with separate SENSE1/SENSE2 inputs and RESET1/RESET2 outputs, each configurable for OV or UV detection via internal resistor divider or external scaling. Its architecture includes dedicated CTSx (sense delay) and CTRx (reset delay) pins with internal timing resistors (100 kΩ for CTS, 1 MΩ for CTR), enabling precise glitch rejection and controlled release timing without external logic.

It features dual output topologies: Channel 1 uses push-pull active-low RESET1_UVPP (per nomenclature), while Channel 2 uses open-drain active-low RESET2_UVOD. The device operates across –40°C to +125°C ambient, supports direct connection to 12 V/24 V automotive batteries, and meets IEC60664 creepage requirements via non-conductive WSON thermal pad.

Key Specifications

Pinout & Package

TPS38B752933DSKR is packaged in a 10-pin WSON (DSK) package measuring 2.5 mm × 2.5 mm, with non-conductive central thermal pad 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 voltage supervisor applications.

Compared with TPS38B752933DYY and TPS38A752933DSKR, the TPS38B752933DSKR provides push-pull RESET1 for lower BOM count and better noise immunity, while its WSON thermal performance supports higher ambient temperature operation in compact industrial enclosures.

Availability

TPS38B752933DSKR is available at Aetrix Electronics and suitable for automotive gateways, industrial PLCs, and servo motor drives requiring stable component supply, long-term lifecycle support, and AEC-Q100–aligned reliability validation.

Supply support for TPS38B752933DSKR 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 connectivity solutions for industrial, automotive, and personal electronics markets.

The TPS38 family is designed specifically for high-reliability power-rail supervision in harsh environments - emphasizing wide VIN range, precision thresholds, programmable timing, and functional safety documentation for automotive and factory automation systems.

FAQ

What is the exact output topology of TPS38B752933DSKR?

The TPS38B752933DSKR features RESET1_UVPP (push-pull, active-low undervoltage) and RESET2_UVOD (open-drain, active-low undervoltage). This configuration eliminates the need for an external pull-up on RESET1 while retaining wired-OR capability on RESET2, making it ideal for mixed-signal systems requiring both direct MCU reset and shared reset bus functionality. The TPS38B752933DSKR datasheet confirms this topology in Table 6-2 and Figure 5-1 nomenclature.

Does TPS38B752933DSKR support overvoltage detection?

Yes, the TPS38B752933DSKR supports configurable overvoltage (OV) or undervoltage (UV) detection per channel via internal configuration - confirmed by the "OV or UV" designation in the device title and Table 6-2's RESET1_OVPP/RESET2_OVOD variants. While the specific TPS38B752933DSKR variant is UV-configured (RESET1_UVPP/RESET2_UVOD), its underlying architecture allows OV detection through pin-strapping or external resistor selection per application note SNVA865. The TPS38B752933DSKR maintains full 65 V input tolerance on SENSE pins regardless of detection mode.

What is the maximum hysteresis voltage option for TPS38B752933DSKR?

The TPS38B752933DSKR supports hysteresis up to 13% of the threshold voltage or fixed values up to 2.5 V for thresholds below 8 V. For example, with an 800 mV threshold, 13% yields 104 mV hysteresis; with a 6.5 V threshold, 13% yields 845 mV. These options are implemented via internal resistor networks and require no external components. The TPS38B752933DSKR datasheet specifies ±1.5% hysteresis accuracy across –40°C to +125°C in Section 7.5.

Can TPS38B752933DSKR monitor voltages higher than its VDD supply?

Yes, the TPS38B752933DSKR allows SENSE1 and SENSE2 to monitor voltages up to 65 V independently of VDD, which can be as low as 2.7 V. This decoupling enables monitoring of high-side rails (e.g., 48 V bus) while powering the IC from a regulated 3.3 V auxiliary supply - a key feature for redundant supervision in automotive and industrial systems. The TPS38B752933DSKR's 65 V–rated SENSE pins and high-impedance input (≤2 µA leakage) make this possible without external attenuators.

Is TPS38B752933DSKR qualified for automotive applications?

The TPS38B752933DSKR operates across –40°C to +125°C ambient temperature and includes functional safety documentation support (FIT rate, FMEA), aligning with automotive requirements. While not explicitly AEC-Q100 certified in the provided datasheet, its specifications - including 65 V absolute max ratings, 1% threshold accuracy, and IEC60664-compliant creepage - target automotive battery monitoring use cases such as gateways and body control modules. System-level qualification per ISO 26262 is supported by TI's safety documentation package for the TPS38 family.