Analog Devices Inc./Maxim Integrated MAX16002DTC+

Overview

The MAX16002DTC+ from Maxim Integrated is a low-voltage, quad-voltage microprocessor supervisor IC in a 12-pin TQFN (4mm × 4mm) package. It monitors four independent supply rails (e.g., 3.3V, 2.5V, 1.8V, and adjustable down to 0.4V), provides a shared active-low RESET output asserting on any fault or manual reset, features a 1.6s typical watchdog timeout, and operates across –40°C to +125°C for industrial and automotive-grade systems.

For engineers reviewing the MAX16002DTC+ datasheet, MAX16002DTC+ pinout, MAX16002DTC+ application, or MAX16002DTC+ equivalent, key selection criteria include its fixed/adjustable voltage thresholds, capacitor-adjustable 140ms–280ms reset timeout, integrated 30µA internal pullups eliminating external resistors, watchdog timer with 54s startup delay, and guaranteed logic operation down to VCC = 1V.

Technical Context

The MAX16002DTC+ implements a multi-rail supervision architecture with independent input comparators feeding a shared reset logic block. Its RESET output asserts when any of the four monitored voltages falls below its threshold (with 0.5% hysteresis) or upon MR assertion, and remains asserted for a minimum 140ms after all inputs recover and MR deasserts.

It integrates a watchdog timer with 1.6s typical timeout and 54s startup delay, disabled by leaving WDI floating; a tolerance-select pin (TOL) configures threshold accuracy to ±5% or ±10%; and a margin enable input (MARGIN) forces all outputs high during system margin testing-enabling safe functional validation without false resets.

Key Specifications

Pinout & Package

Package: 12-pin TQFN (4mm × 4mm), exposed pad (EP) internally connected to GND. Thermal pad must be soldered to PCB ground plane for optimal thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16001DTC+, the MAX16002DTC+ trades independent outputs for a simpler shared RESET path and reduced pin count; compared with TPS3808G33DBVR, it delivers full quad supervision, watchdog, margin enable, and AEC-Q100-aligned temperature range - making it suitable for complex multivoltage systems where reliability and feature completeness are critical.

Availability

MAX16002DTC+ is available at Aetrix Electronics and suitable for storage equipment, servers, and networking/telecommunication equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX16002DTC+ 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

Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.

The MAX16000–MAX16007 family was engineered specifically for multivoltage system supervision - delivering configurable thresholds, integrated watchdogs, and extended-temperature operation to replace discrete reset solutions in high-reliability platforms.

FAQ

What voltage thresholds does the MAX16002DTC+ monitor by default?

The MAX16002DTC+ monitors four voltages: IN1 = 3.3V, IN2 = 2.5V, IN3 = adjustable (0.366V–0.400V), and IN4 = 1.8V. Threshold accuracy is selectable via the TOL pin: ±5% when tied to GND, ±10% when tied to VCC. These values are factory-configured per the "MAX16002D" variant in Table 1 of the datasheet.

Does the MAX16002DTC+ support adjustable reset timeout, and how is it configured?

Yes, the MAX16002DTC+ supports adjustable reset timeout. Connect an external capacitor between the SRT pin and GND. The timeout period is calculated as tRP = 2.06 × 10⁶ Ω × CSRT (F). With SRT tied to VCC, the internal minimum timeout of 140ms is used. Typical timeout ranges from 140ms to 280ms depending on capacitor value.

How does the watchdog timer in the MAX16002DTC+ behave during power-up?

The MAX16002DTC+ watchdog timer includes a 54s startup delay after power-up or reset assertion. During this window, no watchdog timeout occurs - allowing time for processor boot and initialization. The timer begins counting only after the reset timeout completes and MR is released, preventing spurious resets during system start-up.

Can the MAX16002DTC+ operate reliably at low VCC levels, and what is the minimum functional voltage?

Yes, the MAX16002DTC+ guarantees correct logic state down to VCC = 1.0V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. This ensures reliable reset generation and watchdog operation even during brown-out conditions common in battery-backed or unregulated power systems.

What is the purpose of the MARGIN pin on the MAX16002DTC+, and how is it used?

The MARGIN pin on the MAX16002DTC+ is an active-low input that forces all outputs (including RESET) into a high-impedance or deasserted state when pulled low - overriding all voltage-monitoring conditions. This enables safe margin testing of individual power rails without triggering unintended system resets, and is essential for production validation of power supply tolerances.