Analog Devices Inc./Maxim Integrated MAX16059ATT16+T

Overview

MAX16059ATT16+T from Analog Devices is a 6-pin TDFN ultra-low-power microprocessor supervisory circuit with factory-trimmed 1.575V reset threshold, 125nA typical supply current, capacitor-adjustable reset timeout (10.5–17.0ms), and no watchdog timer. It monitors single-supply VCC (1.1–5.5V) in battery-powered medical and portable electronics to ensure reliable power-on reset and brownout protection.

For engineers reviewing the MAX16059ATT16+T datasheet, MAX16059ATT16+T pinout, MAX16059ATT16+T application, or MAX16059ATT16+T equivalent, key selection criteria include its open-drain RESET output, -40°C to +125°C automotive temperature range, push-pull/open-drain configuration option, 1.575V threshold tolerance (±2.5% over temp), and compatibility with low-leakage ceramic SRT capacitors (39pF–4.7µF).

Technical Context

The MAX16059ATT16+T implements a precision voltage monitor with hysteresis (0.5%) and guaranteed RESET validity down to VCC = 1.1V. Its internal ramp-based timing circuit uses SRT pin current (210–240nA typ) and threshold (1.173–1.297V) to generate capacitor-programmable reset timeout.

As the open-drain variant of the MAX16057/MAX16059 family, it lacks WDI, WDS, and SWT pins-eliminating watchdog functionality while retaining manual reset (MR) input, reset timeout adjustment, and transient immunity up to 40µs for 100mV VCC glitches.

Key Specifications

Pinout & Package

MAX16059ATT16+T is housed in a 3mm × 3mm, 6-pin TDFN-EP package with exposed pad (EP) recommended to be connected to GND for thermal and EMI performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar supervisory circuit applications.

Compared with MAX16057ATT16+T, MAX16059ATT16+T offers open-drain flexibility for multi-rail interfacing but requires an external pull-up; versus TPS3808G15DBVR, it delivers 6× lower ICC and field-adjustable timing-critical for medical and metering applications demanding decade-long battery operation and design adaptability.

Availability

MAX16059ATT16+T is available at Aetrix Electronics and suitable for glucose monitors, patient monitors, smart meters, and HVAC controllers requiring stable component supply across extended temperature ranges and ultra-low quiescent current.

Supply support for MAX16059ATT16+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 MAX16056–MAX16059 family was designed specifically for ultra-low-power supervisory functions in battery-critical applications such as portable medical devices and energy-harvesting systems, emphasizing nanoampere operation and capacitor-programmable timing.

FAQ

What is the factory-trimmed reset threshold voltage of the MAX16059ATT16+T?

The MAX16059ATT16+T has a factory-trimmed reset threshold of 1.575V, with ±1.5% tolerance at +25°C and ±2.5% over the full -40°C to +125°C operating temperature range. This value is confirmed in Table 1 of the datasheet under suffix "16", and applies specifically to the MAX16059ATT16+T-not other variants in the MAX16056–MAX16059 family.

Does the MAX16059ATT16+T include a watchdog timer function?

No, the MAX16059ATT16+T does not include a watchdog timer. As indicated in the Typical Operating Circuit table and Pin Description section, MAX16059 devices lack WDI, WDS, and SWT pins. The MAX16059ATT16+T is functionally identical to MAX16057ATT16+T except for its open-drain RESET output-both omit watchdog capability entirely.

What capacitor value sets the nominal reset timeout period for the MAX16059ATT16+T?

A 2700pF capacitor connected between the SRT pin and GND sets the nominal reset timeout period of 14.18ms for the MAX16059ATT16+T, as specified in the Electrical Characteristics table under tRP. This value is derived from the formula tRP = 5.15 × 10⁶ × CSRT and is validated across temperature per Table 2.

Can the MAX16059ATT16+T operate with a 1.2V supply voltage?

Yes, the MAX16059ATT16+T operates down to 1.1V supply voltage, as stated in the Absolute Maximum Ratings and Electrical Characteristics tables. At 1.2V, it maintains full supervisory functionality-including valid RESET assertion, MR responsiveness, and SRT-based timeout timing-with supply current rising to ~132nA (typ) per ICC specifications.

Is the exposed pad (EP) on the MAX16059ATT16+T electrically connected internally?

No, the exposed pad (EP) on the MAX16059ATT16+T is not electrically connected to any internal circuitry. As noted in the Pin Description table, EP is a thermal pad intended for soldering to the PCB ground plane to enhance thermal dissipation and reduce noise coupling-its connection is mechanical and thermal, not electrical.