Analog Devices Inc./Maxim Integrated MAX16062CTG+

Overview

MAX16062CTG+ from Maxim Integrated is an octal-voltage microprocessor supervisor IC designed for multivoltage system monitoring in industrial and embedded applications. It monitors eight independent supply rails (e.g., 3.3V, 2.5V, 1.8V, and adjustable down to 0.4V), provides eight open-drain voltage-monitor outputs with internal 30µA pullups, and features a shared active-low RESET output asserting on any undervoltage or manual reset event. Its 1% threshold accuracy over –40°C to +125°C supports high-reliability power sequencing in servers and telecom equipment.

For engineers reviewing the MAX16062CTG+ datasheet, MAX16062CTG+ pinout, MAX16062CTG+ application, or MAX16062CTG+ equivalent, this page delivers verified technical context-including watchdog timer behavior, capacitor-adjustable reset timeout (140ms min), TOL-selectable 5%/10% thresholds, margin enable functionality, and 24-pin 4mm × 4mm thin QFN package details-essential for BOM validation and fault-tolerant system design.

Technical Context

The MAX16062CTG+ implements eight independent voltage comparators with 1% accurate thresholds across temperature, each driving a dedicated open-drain OUTx output. Its RESET output aggregates all eight monitor states plus MR assertion and remains active for a user-configurable timeout period after recovery, with minimum internal timeout of 140ms or external capacitor adjustment via SRT pin.

It integrates a watchdog timer with 1.6s typical timeout and 54s startup delay, disabled by leaving WDI floating; a tolerance-select input (TOL) sets comparator hysteresis to 5% or 10%; and MARGIN enables simultaneous deassertion of all outputs during margin testing. All outputs operate down to VCC = 1V and support external pullup voltages up to 5.5V.

Key Specifications

Pinout & Package

MAX16062CTG+ uses a 24-pin thin QFN package (4mm × 4mm, 0.5mm pitch) with exposed pad (EP) internally connected to GND for thermal management. Pin functions are validated per Maxim's official MAX16062 pin description.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS389007DSGR and ADM1266ACPZ, the MAX16062CTG+ uniquely balances eight-channel monitoring, 1% accuracy, adjustable thresholds, MARGIN test support, and standalone operation - making it optimal for high-density, calibration-sensitive, and reset-critical embedded systems without communication overhead.

Availability

MAX16062CTG+ is available at Aetrix Electronics and suitable for server power sequencing, industrial PLC control, telecom baseband units, and automotive ADAS domain controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX16062CTG+ 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 demanding industrial, automotive, and communications applications.

The MAX16062CTG+ belongs to Maxim's µP supervisor product line, engineered specifically for high-accuracy, multirail power monitoring in space-constrained, thermally aggressive environments where reliability and deterministic reset behavior are non-negotiable.

FAQ

What is the function of the TOL pin on the MAX16062CTG+?

The TOL pin on the MAX16062CTG+ selects the hysteresis level for all monitored voltage inputs: connecting TOL to GND configures 5% threshold hysteresis, while connecting it to VCC selects 10%. This allows designers to optimize noise immunity versus detection sensitivity per application - for example, 10% hysteresis may be preferred in electrically noisy industrial motor drive environments, whereas 5% suits tightly regulated telecom power supplies. The MAX16062CTG+ datasheet specifies exact hysteresis values under Electrical Characteristics.

Can the MAX16062CTG+ monitor voltages below 1.0V?

Yes, the MAX16062CTG+ can monitor voltages as low as 0.4V using its adjustable input architecture. When configured with TOL = GND, the typical threshold is 0.394V; with TOL = VCC, it is 0.373V. These thresholds apply to any INx pin designated as adjustable in the ordering option (e.g., MAX16062C supports adjustable IN3, IN4, IN5, IN6, IN7, IN8). External resistor dividers extend monitoring range further - for instance, a 1.2V rail can be scaled to 0.394V using R1/R2 = 2.05. The MAX16062CTG+ maintains 1% accuracy across this range.

How does the watchdog timer on the MAX16062CTG+ behave during power-up?

The MAX16062CTG+ watchdog timer enters a 54s startup delay after VCC rises above UVLO (1.8V typical), during which no timeout occurs regardless of WDI state. This prevents spurious resets during slow-ramping or poorly filtered supplies. Once the startup period expires, the timer begins normal operation: a missing edge on WDI for >1.6s (typical) asserts RESET. Leaving WDI unconnected disables the timer entirely, as the internal 400nA detector interprets the floating state as inactive - a key design feature confirmed in the MAX16062CTG+ functional description.

What is the purpose of the MARGIN pin on the MAX16062CTG+?

The MARGIN pin on the MAX16062CTG+ is an active-low input that forces all eight OUTx outputs and the RESET output into a high (deasserted) state, regardless of actual input voltage conditions. This enables safe margin testing - for example, during production, lowering a supply rail to verify fault response without triggering a system reset. The MARGIN function has a 50µs propagation delay (tMD) and is electrically isolated from the monitoring comparators, ensuring no interference with normal supervision. This capability is explicitly documented in the MAX16062CTG+ Applications Information section.

Does the MAX16062CTG+ require external pullup resistors for its open-drain outputs?

No, the MAX16062CTG+ does not require external pullup resistors for standard 3.3V or 5V logic interfacing because all OUTx and RESET outputs include internal 30µA pullups to VCC. These are sufficient to drive typical CMOS inputs. However, if interfacing with a different logic supply (e.g., 1.8V IO), an external pullup to that voltage is permitted - the MAX16062CTG+ output stage blocks reverse current flow up to 5.5V, protecting VCC. This design eliminates eight discrete resistors in most applications, reducing BOM cost and PCB area.