Analog Devices Inc./Maxim Integrated MAX16003ATE+

Overview

MAX16003ATE+ from Maxim Integrated is a low-voltage, hex-voltage microprocessor supervisor IC designed for multivoltage system monitoring in industrial and telecom infrastructure. It monitors six independent supply rails (e.g., 3.3V, 2.5V, 1.8V, and adjustable down to 0.4V), provides an active-low RESET output asserting on any undervoltage or manual reset, features a 140ms minimum reset timeout (capacitor-adjustable), and operates across –40°C to +125°C.

For engineers reviewing the MAX16003ATE+ datasheet, MAX16003ATE+ pinout, MAX16003ATE+ application, or MAX16003ATE+ equivalent, this device supports critical power sequencing, fault detection, and watchdog supervision in high-reliability embedded systems where precise voltage threshold selection (5% or 10% tolerance), margin testing enablement, and open-drain outputs with internal 30µA pullups reduce BOM count.

Technical Context

The MAX16003ATE+ implements independent voltage monitoring per input channel with hysteresis (0.5% of threshold) and propagation delay ≤20µs. Its RESET output asserts when any monitored voltage falls below its threshold or MR is pulled low, remaining asserted for the full reset timeout after all voltages recover and MR is released.

It integrates a watchdog timer with 1.6s typical timeout (1.12–2.40s range), startup delay disabled (unlike MAX16001/2/4/6/7), and WDI input leakage <100nA. The SRT pin enables capacitor-programmable reset timeout (2.06MΩ × CSRT), while TOL selects 5% or 10% threshold tolerance and MARGIN disables all outputs during margin testing.

Key Specifications

Pinout & Package

MAX16003ATE+ is housed in a 16-pin TQFN package (4mm × 4mm, exposed pad), RoHS-compliant, with thermal pad internally connected to GND for enhanced heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16004ATE+, the MAX16003ATE+ offers identical supervision functionality but with a distinct factory-set threshold configuration; versus TPS3808G33DBVR, it delivers six-rail monitoring, watchdog, and programmable timing - making it irreplaceable in complex multivoltage systems requiring coordinated reset and fault isolation.

Availability

MAX16003ATE+ 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 product lifecycles.

Supply support for MAX16003ATE+ 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 and mixed-signal ICs for industrial, communications, computing, and automotive applications.

The MAX16000–MAX16007 family was engineered specifically for multivoltage system supervision in high-reliability infrastructure equipment, emphasizing wide temperature operation, low quiescent current, and flexible threshold programming.

FAQ

What is the function of the MARGIN pin on the MAX16003ATE+?

The MARGIN pin on the MAX16003ATE+ is an active-low input that, when pulled low, deasserts all OUT1–OUT6 outputs and the RESET output regardless of monitored voltage states. This enables safe margin testing of power supplies under load without triggering spurious resets. Its internal 20kΩ pullup ensures default high operation, and it features a 50µs delay to prevent glitches during assertion/deassertion.

Does the MAX16003ATE+ support adjustable reset timeout, and how is it configured?

Yes, the MAX16003ATE+ supports adjustable reset timeout via the SRT pin. Connecting a capacitor from SRT to GND sets the timeout period using the formula tRP = 2.06 × 10⁶ Ω × CSRT (F). With CSRT = 1500pF, timeout is 3.09ms (typ); leaving SRT open yields ~50µs. For the fixed 140ms minimum, connect SRT directly to VCC - no external components required.

What are the voltage threshold options supported by the MAX16003ATE+?

The MAX16003ATE+ supports fixed thresholds for 5V, 3.3V, 3V, 2.5V, 1.8V, 1.5V, 1.2V, and 0.9V systems, plus adjustable monitoring down to 0.4V. Threshold tolerance is selectable via the TOL pin: 5% (TOL = GND) or 10% (TOL = VCC). All six inputs share the same tolerance setting, and hysteresis is fixed at 0.5% of the selected threshold.

How does the watchdog timer in the MAX16003ATE+ differ from those in MAX16001 or MAX16004?

The MAX16003ATE+ watchdog timer has a 1.6s typical timeout (1.12–2.40s) with no startup delay - unlike MAX16001/MAX16004 which impose a 54s startup window before first timeout. It clears on any WDI edge and asserts RESET (not a separate WDO) when timeout occurs. WDI leakage is <100nA, allowing direct connection to low-leakage GPIOs without external buffering.

What package type and footprint does the MAX16003ATE+ use?

The MAX16003ATE+ uses a 16-pin TQFN package (4mm × 4mm body, 0.5mm pitch) with exposed thermal pad (EP), outlined in Maxim document 21-0139 and land pattern 90-0070. The EP is internally connected to GND and must be soldered to the PCB ground plane for thermal performance. RoHS-compliant; suffix "+" denotes lead-free finish.