Analog Devices Inc./Maxim Integrated MAX16001ATE+

Overview

MAX16001ATE+ from Maxim Integrated is a quad-voltage microprocessor supervisor IC in a 16-pin TQFN (4mm × 4mm) package, monitoring four independent supply rails (e.g., 3.3V, 2.5V, 1.8V, and adjustable down to 0.4V), featuring a 140ms minimum reset timeout, open-drain outputs with internal 30μA pullups, and integrated watchdog timer with 1.6s typical timeout - used for power sequencing and fault detection in multivoltage server and storage systems.

For engineers reviewing the MAX16001ATE+ datasheet, MAX16001ATE+ pinout, MAX16001ATE+ application, or MAX16001ATE+ equivalent, this page delivers verified circuit role, exact threshold tolerances (5%/10% selectable), reset timing behavior under voltage transients, watchdog startup delay (54s), and AEC-Q100 qualification status - all critical for automotive-grade power management validation and BOM consolidation.

Technical Context

The MAX16001ATE+ implements a dual-mode supervision architecture: independent open-drain outputs per monitored rail (IN1–IN4) plus a shared active-low RESET output that asserts when any input falls below its threshold or MR is pulled low. Its watchdog timer clears on WDI edge transitions and enters a 54s startup window before first timeout evaluation.

Threshold selection is controlled by the TOL pin (GND = ±5%, VCC = ±10%), and reset timeout is either fixed at ≥140ms (SRT tied to VCC) or capacitor-adjustable via SRT-to-GND (t_RP = 2.06 MΩ × C_SRT). All outputs remain functional down to V_CC = 1V, ensuring robust operation during brownout conditions.

Key Specifications

Pinout & Package

Package: 16-pin TQFN (4mm × 4mm, exposed pad), RoHS-compliant, thermal pad internally connected to GND.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16001DTE+, the MAX16001ATE+ adds AEC-Q100 Grade 1 qualification for automotive use; compared with TPS3808G33DBVR, it provides four independent monitors, margin enable, watchdog, and flexible threshold selection - making it suitable for complex multivoltage systems where fault isolation and testability are critical.

Availability

MAX16001ATE+ is available at Aetrix Electronics and suitable for storage equipment, servers, and networking/telecommunication equipment requiring stable component supply across extended temperature ranges and automotive-grade reliability.

Supply support for MAX16001ATE+ 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 quad/hex/octal monitoring, integrated watchdogs, and AEC-Q100 options to replace discrete reset solutions in high-reliability computing platforms.

FAQ

What is the function of the MARGIN pin on the MAX16001ATE+?

The MARGIN pin on the MAX16001ATE+ is an active-low manual deassert input. When pulled low, it forces all outputs (OUT1–OUT4 and RESET) into a high-impedance or high state - regardless of monitored input voltages. This enables safe voltage margin testing during production or field calibration without triggering unintended resets. The MAX16001ATE+ uses internal pullup resistance (~20kΩ) on this pin, and its response time is guaranteed within 50µs.

Does the MAX16001ATE+ support adjustable reset timeout, and how is it configured?

Yes, the MAX16001ATE+ supports adjustable reset timeout via the SRT pin. Connecting a capacitor from SRT to GND sets the timeout period using t_RP = 2.06 MΩ × C_SRT. For example, a 1500pF capacitor yields ~3.09ms typical timeout. Leaving SRT unconnected results in minimal delay (~50µs), while tying SRT to VCC activates the internal 140ms minimum timeout. This flexibility allows alignment with diverse power-up sequences in FPGAs, ASICs, and memory subsystems.

What are the threshold voltage options for IN1–IN4 on the MAX16001ATE+?

The MAX16001ATE+ supports fixed thresholds (3.3V, 2.5V, 1.8V) and adjustable thresholds down to 0.4V on IN1–IN4. Threshold tolerance is selectable via the TOL pin: connect to GND for ±5% or to VCC for ±10%. Specific configurations depend on variant suffix (e.g., MAX16001ATE+ corresponds to "A" variant: IN1=3.3V, IN2=2.5V, IN3=adjustable, IN4=1.8V). Hysteresis is 0.5% of threshold voltage, improving noise immunity.

Is the MAX16001ATE+ compatible with 1.0V supply operation?

Yes, the MAX16001ATE+ is fully specified to operate with V_CC as low as 1.0V. Its internal logic and open-drain outputs maintain correct functionality - including RESET assertion, watchdog timing, and output pullup behavior - across the full 1.0V to 5.5V supply range. This ensures reliable supervision during brownout conditions and low-power states common in battery-backed or energy-harvesting systems.

How does the watchdog timer on the MAX16001ATE+ behave during power-up?

The MAX16001ATE+ watchdog timer enters a 54-second startup delay immediately after RESET is deasserted, allowing the host processor sufficient time to initialize and begin issuing WDI toggles. During this window, no watchdog timeout occurs - preventing spurious resets. Once the first valid edge is detected on WDI, the timer begins normal 1.6s timeout cycles. Leaving WDI floating disables the watchdog entirely, as the internal detector draws <100nA and interprets open-circuit as inactive.