Analog Devices Inc./Maxim Integrated MAX6762TATWD3+T

Overview

MAX6762TATWD3+T from Analog Devices is a dual-voltage window detector IC monitoring both VCC (3.3V nominal) and VCC2 (1.8V nominal) with ±15% factory-trimmed thresholds, 100ms minimum reset timeout, latched overvoltage output, manual reset input, and operation from -40°C to +125°C. It serves as a system-level power supervisor in DC-DC converter modules and automotive control units.

For engineers reviewing the MAX6762TATWD3+T datasheet, MAX6762TATWD3+T pinout, MAX6762TATWD3+T application, or MAX6762TATWD3+T equivalent, key selection criteria include dual-supply monitoring capability, latched OV output behavior, TDFN-8 package compatibility, and AEC-Q100 qualification for automotive use.

Technical Context

The MAX6762TATWD3+T implements independent undervoltage and overvoltage comparators for two supplies: VCC (3.3V nominal) and VCC2 (1.8V nominal), each with ±15% threshold window selected via SET pin biasing at VCC/2. It features latched OV output controlled by OVLATCH pin and internal 100ms minimum timeout on RESET/UV outputs.

Its dual-monitor architecture uses separate internal references for VCC and VCC2 detection paths, supports manual reset assertion via MR pin with 4µs minimum pulse width, and guarantees correct output states down to VCC = 1.0V while requiring ≥1.4V for full voltage monitoring functionality.

Key Specifications

Pinout & Package

MAX6762TATWD3+T is housed in an 8-pin TDFN package (package code T833+2, outline 21-0137) with exposed pad connected to GND. The compact 3mm × 3mm footprint supports high-density PCB layouts and thermal performance of θJA = 41°C/W on multilayer boards.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6761TATWD3+T and TPS3808G33DBVR, MAX6762TATWD3+T uniquely delivers dual-rail monitoring with latched overvoltage response in a thermally optimized TDFN-8 package, making it optimal for automotive and industrial systems requiring robust fault containment.

Availability

MAX6762TATWD3+T is available at Aetrix Electronics and suitable for DC-DC converter modules, automotive power management units, and industrial PLCs requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6762TATWD3+T 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX6762TATWD3+T belongs to the MAX6754–MAX6764 family of low-power window detectors, designed specifically for reliable dual-supply voltage supervision in safety-critical automotive and industrial applications.

FAQ

What is the function of the OVLATCH pin on the MAX6762TATWD3+T?

The OVLATCH pin on the MAX6762TATWD3+T controls latching behavior of the overvoltage output. When driven high, it latches the OV output in asserted state during any VCC or VCC2 overvoltage condition; driving it low clears the latch once overvoltage conditions are removed. This enables persistent fault signaling without continuous monitoring by the host processor. The MAX6762TATWD3+T requires external pullup or pulldown due to its high-impedance input characteristic.

Does the MAX6762TATWD3+T monitor both VCC and VCC2 simultaneously?

Yes, the MAX6762TATWD3+T monitors VCC (3.3V nominal) and VCC2 (1.8V nominal) simultaneously using independent comparator paths. An undervoltage or overvoltage condition on either supply asserts the corresponding UV or OV output. The device guarantees correct output logic states when either supply exceeds 1.0V, though full monitoring functionality requires VCC ≥ 1.4V. This dual-path architecture makes MAX6762TATWD3+T suitable for multi-rail power systems.

What does the 'D3' suffix in MAX6762TATWD3+T indicate?

The 'D3' suffix in MAX6762TATWD3+T specifies a 100ms minimum reset timeout period, with typical value of 185ms and maximum of 320ms over temperature. This distinguishes it from the 'D0' variant (20µs typical propagation delay). The D3 timeout ensures sufficient reset hold time for microprocessors and FPGAs to complete power-on initialization sequences reliably. All MAX6762TATWD3+T units ship with this timing option factory-configured.

Is the MAX6762TATWD3+T AEC-Q100 qualified?

Yes, the MAX6762TATWD3+T is AEC-Q100 qualified for automotive applications. This qualification covers stress testing for temperature cycling, humidity, mechanical shock, and ESD robustness across the full -40°C to +125°C operating range. The qualification applies specifically to /V and /T grade variants - MAX6762TATWD3+T falls under the /T grade designation and meets Grade 1 requirements. This makes MAX6762TATWD3+T suitable for under-hood and cabin electronics.

How is the ±15% window threshold configured on the MAX6762TATWD3+T?

The ±15% window threshold on the MAX6762TATWD3+T is configured by biasing the SET pin to VCC/2 using a resistive divider. Connecting SET directly to GND selects ±5%; connecting to VCC selects ±10%. The MAX6762TATWD3+T's internal circuitry interprets the SET voltage level to scale the UVTH and OVTH thresholds accordingly. This configuration is non-volatile and requires no programming - the window is fixed at power-up based on the applied SET voltage.