Texas Instruments TPS3762D02OVDDFR

Overview

TPS3762D02OVDDFR from Texas Instruments is a 65 V window (overvoltage + undervoltage) supervisor IC with built-in self-test (BIST), latch functionality, and 0.9% threshold accuracy. It monitors high-voltage industrial rails (e.g., 12/24/48 V SELV systems), features ultra-fast UV/OV detection (<5 µs option), 4 µA quiescent current, and reverse polarity protection (–65 V on SENSE). Used in servo drives and PLCs for fail-safe power-rail supervision.

For engineers reviewing the TPS3762D02OVDDFR datasheet, TPS3762D02OVDDFR pinout, TPS3762D02OVDDFR application, or TPS3762D02OVDDFR equivalent, key selection criteria include its 800 mV adjustable threshold architecture, programmable CTS/CTR timing, open-drain active-low RESET with latching, SIL-3 functional safety targeting, and SOT-23-8 package compatibility with high-reliability industrial layouts.

Technical Context

The TPS3762D02OVDDFR implements dual-comparator window supervision using an internal 800 mV reference with external resistor divider on SENSE to set custom OV/UV thresholds. Its digital core integrates BIST logic that validates internal analog paths upon command via BIST_EN/LATCH_CLR, with tBIST = 3.5 ms and recovery within 350–600 µs.

It supports independent VDD (2.7–65 V) and SENSE (0–65 V, –65 V reverse protected) operation, enabling redundancy in safety-critical systems. The latch function holds RESET low until cleared by >1.3 V on BIST_EN/LATCH_CLR, while CTR and CTS pins allow capacitor-programmable reset and sense delay timing-critical for rejecting transients in noisy motor-drive environments.

Key Specifications

Pinout & Package

TPS3762D02OVDDFR is housed in an 8-pin SOT-23 (DDF) package measuring 2.9 mm × 1.6 mm, optimized for space-constrained industrial PCBs and rated for –40°C to +150°C ambient operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar window supervisor applications.

Compared with TPS3762D02OVDDFR, both alternatives lack 65 V SENSE capability, reverse polarity protection, BIST, and latch-making them unsuitable for industrial servo, PLC, or avionics use cases requiring SIL-3 alignment and robust HV supervision.

Availability

TPS3762D02OVDDFR is available at Aetrix Electronics and suitable for industrial servo drives, programmable logic controllers, and avionics power management systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPS3762D02OVDDFR 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 high-reliability power management solutions for industrial, automotive, and aerospace markets.

The TPS3762 family was designed specifically for functional safety–compliant high-voltage supervision in demanding industrial automation and avionics applications-emphasizing low IQ, precision thresholds, BIST, and latch behavior.

FAQ

What is the exact overvoltage and undervoltage threshold configuration for TPS3762D02OVDDFR?

The TPS3762D02OVDDFR uses an internal 800 mV reference with external resistor divider on the SENSE pin to set custom thresholds. The "02" suffix indicates 2% hysteresis: for an 800 mV reference, UV release occurs at 816 mV (800 mV + 2%) and OV release at 784 mV (800 mV – 2%). Actual thresholds depend on resistor values selected per TI's application guidelines in Section 8.2 of the datasheet.

Does TPS3762D02OVDDFR support true window supervision (simultaneous OV and UV detection)?

Yes, TPS3762D02OVDDFR is explicitly a window supervisor-its architecture continuously compares SENSE voltage against both upper (VITP) and lower (VITN) thresholds derived from the same 800 mV reference. Faults trigger RESET when SENSE falls below VITN or rises above VITP, with independent hysteresis applied to each boundary.

How does the latch functionality work on TPS3762D02OVDDFR, and how is it cleared?

When a fault occurs, TPS3762D02OVDDFR asserts RESET low and holds it latched until a logic-high pulse (≥1.3 V, ≥1.6 µs wide) is applied to the BIST_EN/LATCH_CLR pin. This single-pin interface simplifies safety-critical designs by eliminating separate latch-enable and clear signals-ensuring deterministic safe-state maintenance until deliberate system intervention.

Can TPS3762D02OVDDFR monitor a voltage rail higher than its own VDD supply?

Yes. TPS3762D02OVDDFR supports independent VDD (2.7–65 V) and SENSE (0–65 V, –65 V reverse tolerant) operation. For example, it can be powered from a 3.3 V auxiliary rail (VDD = 3.3 V) while monitoring a 48 V main bus on SENSE-enabling architectural redundancy and isolation required in SIL-3 systems.

What is the role of the CTS and CTR pins on TPS3762D02OVDDFR, and how are they used?

CTS sets the sense time delay-the minimum duration SENSE must remain outside threshold before RESET asserts-configured via external capacitor or left floating for ~85–100 µs default. CTR sets the reset time delay-the duration RESET stays low after fault clearance-also capacitor-programmable or floating for ~350–600 µs. Both enable transient rejection tailored to specific application noise profiles.