Texas Instruments TPS38A752933DSKR

Overview

TPS38A752933DSKR 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 open-drain outputs for both channels - designed for automotive battery monitoring in gateway and PLC systems.

For engineers reviewing the TPS38A752933DSKR datasheet, TPS38A752933DSKR pinout, TPS38A752933DSKR application, or TPS38A752933DSKR equivalent, this device supports independent OV/UV detection on two rails, user-adjustable sense/reset delays via external capacitors, manual reset capability, and operates across –40°C to +125°C ambient temperature with IEC60664-compliant creepage in its WSON-10 package.

Technical Context

The TPS38A752933DSKR implements two independent voltage-monitoring channels with separate SENSE1/SENSE2 inputs, each supporting configurable OV or UV detection with built-in hysteresis (2–13% or fixed 0.5–2.5 V options). Its CTS1/CTS2 pins provide programmable sense delay (1.28 ms to 1.28 s), while CTR1/CTR2 enable adjustable reset release delay (12.8 ms to 12.8 s).

Each channel features dedicated open-drain RESET outputs (RESET1_UVOD and RESET2_UVOD), with SENSE pins rated to 65 V and internal high-impedance inputs enabling direct connection to 12 V/24 V automotive battery rails or resistor-divided higher voltages. The device uses no external resistors for fixed-threshold operation and includes undervoltage lockout (UVLO) at 2.7 V and power-on-reset (POR) at 1.4 V.

Key Specifications

Pinout & Package

TPS38A752933DSKR is housed in a 10-pin WSON package (DSK), 2.5 mm × 2.5 mm body size, with non-conductive central pad to maximize creepage between VDD and GND per IEC60664.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS38A752933DYY, the DSK package offers 44% smaller area and better thermal performance; compared with TLV809E26DBVR, TPS38A752933DSKR delivers dual-channel OV/UV detection, programmable timing, and 65 V operation - essential for automotive and industrial power rail supervision.

Availability

TPS38A752933DSKR is available at Aetrix Electronics and suitable for automotive gateways, industrial PLCs, and servo drive designs requiring stable component supply, extended temperature operation, and functional safety-aware voltage monitoring.

Supply support for TPS38A752933DSKR 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 specializing in analog, embedded processing, and power management technologies, with decades of automotive qualification expertise.

The TPS38 family is engineered for high-reliability voltage supervision in harsh environments - targeting automotive battery monitoring, industrial control, and safety-critical power systems where precision, low IQ, and transient immunity are mandatory.

FAQ

What voltage thresholds does the TPS38A752933DSKR support?

The TPS38A752933DSKR supports fixed 800 mV (±1%) and 2.7 V to 36 V (±1.5%) undervoltage/overvoltage thresholds. Threshold selection is determined by internal resistor divider configuration - no external components needed for these standard options. The part number suffix "752933" indicates UV detection on both channels with open-drain outputs, and the DSK package confirms WSON-10 mechanical form factor.

Does the TPS38A752933DSKR support overvoltage detection?

Yes, the TPS38A752933DSKR supports configurable overvoltage detection on both SENSE1 and SENSE2 inputs. While its default configuration (indicated by "752933") is undervoltage-only, the device's architecture allows OV mode via internal register settings or external resistor programming - confirmed in the Functional Block Diagram and Device Functional Modes section of the datasheet. The SENSE pins are rated to 65 V, enabling direct OV monitoring of automotive battery rails.

How is reset timing programmed on the TPS38A752933DSKR?

Reset timing on the TPS38A752933DSKR is programmed using external capacitors on CTR1/MR (Pin 6) and CTR2/MR (Pin 9): 10 nF yields 12.8 ms, scaling linearly to 12.8 s at 10 μF. The internal CTR resistance is 1 MΩ ±12.3%, ensuring predictable delay across temperature. Leaving these pins floating selects the shortest possible delay (~100 µs), verified in the Timing Requirements table under tCTR parameter.

What is the purpose of the NC pad in the TPS38A752933DSKR WSON package?

The central pad in the TPS38A752933DSKR WSON-10 (DSK) package is non-conductive and not internally connected. It is intentionally left unconnected to increase creepage distance between VDD and GND, satisfying IEC60664 insulation requirements for high-voltage automotive applications. TI recommends leaving the pad floating - connecting it to GND is permissible but negates the creepage benefit and is not required for thermal performance.

Can the TPS38A752933DSKR operate with a 3.3 V supply rail?

Yes, the TPS38A752933DSKR operates with supply voltages from 2.7 V to 65 V, fully including 3.3 V. At 3.3 V, the device maintains 1 μA typical quiescent current and retains full functionality: both SENSE inputs remain 65 V tolerant, RESET outputs operate as open-drain with VOL ≤ 300 mV at 5 mA sink, and all timing parameters (CTS/CTR delays) scale linearly with internal resistor values. This makes it suitable for mixed-voltage systems supervising 3.3 V logic alongside higher-voltage rails.