Analog Devices Inc./Maxim Integrated MAX16169AALTA+

Overview

MAX16169AALTA+ from Analog Devices is a nanoPower pushbutton on/off controller and battery freshness seal IC with integrated switch debouncer, latched output, and one-shot interrupt generator. It operates from 1.3V to 5.5V, draws ≤40nA standby current, supports ±60V robust PB_IN input, delivers 200mA latched output with <30mV drop, and features 50ms debounce / 8s shutdown timing - enabling ultra-low-power system power control in disposable IoT and medical devices.

For engineers reviewing the MAX16169AALTA+ datasheet, MAX16169AALTA+ pinout, MAX16169AALTA+ application, or MAX16169AALTA+ equivalent, key selection criteria include its 50ms/8s timing option A configuration (OUT deasserts on long press), ±40kV HBM ESD protection at PB_IN, 6-pin µDFN package, and ability to serve as both power switch and system interrupt source without external components.

Technical Context

The MAX16169AALTA+ implements a deterministic state machine for mechanical switch interface: PB_IN closure ≥50ms triggers latched OUT high and a 32ms INT pulse; closure ≥8s extends INT to 128ms and deasserts OUT. Its internal pull-up/pull-down resistors (1.0–2.0MΩ) eliminate external biasing, and the CLR input provides asynchronous reset with 2×tINT lockout window after OUT assertion.

Designed for battery-sealed applications, the device uses ultra-low-leakage CMOS circuitry to maintain 40nA ISB across –40°C to +125°C, while its PB_IN input includes overvoltage clamping diodes and ±40kV HBM ESD protection - enabling direct connection to unconditioned switches in harsh industrial or portable environments.

Key Specifications

Pinout & Package

MAX16169AALTA+ is housed in a 2mm × 2mm, 6-pin micro dual-flat no-leads (µDFN) package with wettable flanks (package code L622+1C), optimized for space-constrained portable designs and automated optical inspection.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar pushbutton on/off controller applications.

Compared with MAX16168AALTA+, MAX16169AALTA+ provides shorter debounce (50ms vs. 2s) and shutdown (8s vs. 16s) with automatic OUT deassertion - critical for fail-safe power-off in medical and disposable electronics. Versus TPL7407LPGEDR, it delivers autonomous operation without MCU dependency and 1,000× lower quiescent current.

Availability

MAX16169AALTA+ is available at Aetrix Electronics and suitable for portable medical devices, IoT asset trackers, handheld diagnostic tools, and industrial hand scanners requiring stable component supply, guaranteed RoHS compliance, and full traceability.

Supply support for MAX16169AALTA+ 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX16169AALTA+ belongs to Analog Devices' nanoPower interface and power management product line, designed specifically for battery-sealed, ultra-low-power portable electronics where shelf life, ESD resilience, and autonomous power control are critical.

FAQ

What is the debounce time configuration of MAX16169AALTA+?

The MAX16169AALTA+ is configured with a fixed 50ms debounce time (tDB), as specified in the Ordering Information table. This value is factory-set and not user-adjustable. The 50ms interval reliably filters mechanical switch bounce while ensuring responsive activation for typical tactile pushbuttons used in portable devices. MAX16169AALTA+ does not support programmable or external RC-adjustable debounce timing.

Does MAX16169AALTA+ support active-high or active-low pushbutton inputs?

Yes, MAX16169AALTA+ supports both active-high and active-low pushbutton configurations via its dual-function PB_IN/PB_IN pin. When used as PB_IN, the pin is internally pulled up to VCC and responds to a low-going signal; when used as PB_IN, it is internally pulled down and responds to a high-going signal. This flexibility eliminates the need for external biasing resistors in either configuration.

What happens to the OUT pin when the pushbutton is held longer than the shutdown period on MAX16169AALTA+?

On MAX16169AALTA+, holding the pushbutton longer than the 8s shutdown period (tSO) causes the latched OUT signal to deassert - turning off the connected load. Simultaneously, the INT output generates an extended 128ms pulse instead of the standard 32ms pulse. This behavior is specific to timing option A and enables hardware-controlled safe shutdown without MCU intervention.

Can MAX16169AALTA+ drive a 150mA load directly, and what is the expected voltage drop?

Yes, MAX16169AALTA+ can drive a 150mA load directly through its OUT pin. At VCC = 3.3V and 150mA sink current, the voltage drop across OUT is guaranteed to be less than 30mV - meaning the output voltage remains above 3.27V. This low-drop performance allows direct powering of MCUs, sensors, or RF modules without an external pass transistor or regulator.

Is the INT output of MAX16169AALTA+ push-pull or open-drain, and how should it be interfaced?

The INT output of MAX16169AALTA+ is open-drain and active-low. It must be externally pulled up to a logic-compatible voltage (e.g., VCC or regulated 3.3V). During normal operation, INT floats high-impedance when deasserted - even if pulled above VCC - and pulls low for precisely 32ms (short press) or 128ms (long press). This interface simplifies level-shifting and avoids contention in multi-voltage systems.