Analog Devices Inc./Maxim Integrated MAX6762TALTD3+

Overview

The MAX6762TALTD3+ from Analog Devices is a dual-voltage window detector IC that monitors both VCC (3.3V nominal) and VCC2 (adjustable down to 0.9V) for undervoltage/overvoltage conditions, features independent UV/OV open-drain outputs, latched OV output, manual reset input, and 100ms minimum reset timeout. It operates from -40°C to +125°C and draws only 13–30µA supply current, enabling reliable power-supply supervision in automotive DC-DC modules.

For engineers reviewing the MAX6762TALTD3+ datasheet, MAX6762TALTD3+ pinout, MAX6762TALTD3+ application, or MAX6762TALTD3+ equivalent, key selection criteria include dual-rail monitoring capability, ±5%/±10%/±15% factory-set window tolerance via SET pin, latch control via OVLATCH, and AEC-Q100 qualification for automotive-grade reliability.

Technical Context

The MAX6762TALTD3+ implements two independent voltage comparators with internal precision reference and programmable hysteresis (0.7%), supporting simultaneous monitoring of primary (VCC = 3.3V) and secondary (VCC2 adjustable) rails. Its latched OV output remains asserted until cleared by OVLATCH, enabling fault capture in safety-critical systems.

It uses a factory-trimmed resistor divider for VCC2 threshold setting (e.g., 0.4255V base), where external R1/R2 networks scale monitored voltages to match the internal reference. The SET pin selects ±5%, ±10%, or ±15% window width, while MR provides active-low manual reset with 300ns propagation delay and 100ms timeout recovery.

Key Specifications

Pinout & Package

MAX6762TALTD3+ is housed in an 8-pin TDFN package (package code T833+2, outline 21-0137) with exposed pad connected to GND for thermal and EMI performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-voltage window detector applications.

Compared with MAX6761TALTD3+, the MAX6762TALTD3+ provides open-drain outputs for flexible bus interfacing; versus TPS3808G33DBVR, it adds critical dual-rail coordination, latch persistence, and AEC-Q100 qualification for automotive deployment.

Availability

MAX6762TALTD3+ is available at Aetrix Electronics and suitable for automotive engine control units, industrial PLCs, telecom DC-DC modules, and medical infusion pumps requiring stable component supply across extended temperature and long lifecycle programs.

Supply support for MAX6762TALTD3+ 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

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.

The MAX6762TALTD3+ belongs to the MAX6754–MAX6764 family of low-power window detectors, designed specifically for robust, multi-rail power-supply supervision in automotive, industrial, and telecom infrastructure applications.

FAQ

What is the function of the OVLATCH pin on the MAX6762TALTD3+?

The OVLATCH pin on the MAX6762TALTD3+ controls latching behavior of the overvoltage output. When driven high, it latches the OV output in asserted state during any VCC or VCC2 overvoltage event; driving it low clears the latch once fault conditions are removed. This enables persistent fault indication without continuous polling, a key requirement in automotive diagnostic systems using the MAX6762TALTD3+.

Does the MAX6762TALTD3+ monitor both VCC and VCC2 simultaneously?

Yes, the MAX6762TALTD3+ monitors VCC (3.3V nominal) and VCC2 (adjustable 0.9V–3.3V) simultaneously using independent comparators. An undervoltage or overvoltage condition on either rail asserts the corresponding UV or OV output. This dual-rail capability is intrinsic to the MAX6762TALTD3+ architecture and enables coordinated power integrity checks in complex multi-voltage systems.

What timeout period does the D3 suffix indicate for the MAX6762TALTD3+?

The D3 suffix in MAX6762TALTD3+ specifies a 100ms minimum reset timeout period. After VCC or VCC2 recovers above UVTH or below OVTH, the RESET-related outputs remain asserted for ≥100ms before deassertion. This ensures sufficient hold time for microcontrollers to complete internal initialization, and is confirmed in the Electrical Characteristics table (tRP = 100/185/320ms min/typ/max) for the MAX6762TALTD3+.

Can the MAX6762TALTD3+ operate with VCC below 1.4V?

Yes - the MAX6762TALTD3+ guarantees correct output logic states (UV/OV asserted) for VCC down to 1.0V, though voltage monitoring functionality requires VCC ≥ 1.4V per datasheet Note 2. Below 1.4V, the internal reference may not be fully stabilized, but the outputs remain in their last valid state, preserving fail-safe behavior during deep brownout. This behavior is explicitly specified for the MAX6762TALTD3+.

How is the ±15% window tolerance configured on the MAX6762TALTD3+?

The ±15% window tolerance on the MAX6762TALTD3+ is configured by biasing the SET pin to VCC/2 using a resistive divider - not by connecting to GND (±5%) or VCC (±10%). The datasheet specifies this exact method in the Pin Description and Detailed Description sections, confirming that VCC/2 bias yields ±15% hysteresis for both UVTH and OVTH thresholds in the MAX6762TALTD3+.