Analog Devices Inc./Maxim Integrated MAX16150BWT+

Overview

MAX16150BWT+ from Maxim Integrated is a nanoPower pushbutton on/off controller with integrated switch debouncer, latched output, and one-shot interrupt generator. It operates from 1.3V to 5.5V, draws ≤20nA standby current, supports ±60V robust PB_IN input, and delivers 20mA latched output with <100mV drop - enabling direct load control or regulator enable in ultra-low-power portable instruments and disposable electronics.

For engineers reviewing the MAX16150BWT+ datasheet, MAX16150BWT+ pinout, MAX16150BWT+ application, or MAX16150BWT+ equivalent, key selection criteria include its 2s debounce / 16s shutdown timing profile, WLP package footprint, ±15kV HBM ESD protection at PB_IN, and CLR-controlled asynchronous reset capability for battery-powered systems requiring freshness seal functionality.

Technical Context

The MAX16150BWT+ implements a deterministic state machine that latches OUT high after a stable PB_IN low pulse ≥2s (debounce time), and generates a 32ms INT pulse upon detection; a longer press >16s extends INT to 128ms without deasserting OUT. Its internal PB_IN pullup (1.2–2.0MΩ) and hysteresis (100mV) reject mechanical bounce while tolerating ±60V transients.

Unlike the MAX16150A variant, the MAX16150BWT+ maintains OUT assertion during extended PB_IN closures (>16s), making it suitable for systems requiring persistent power enable with differentiated interrupt signaling. The CLR input forces OUT low asynchronously but is locked out for 2×tINT (64–256ms) after each OUT assertion to prevent spurious resets.

Key Specifications

Pinout & Package

MAX16150BWT+ uses a 1mm × 1.5mm, 6-bump wafer-level package (WLP) with bottom-side solder bumps. This ultra-compact RoHS-compliant package minimizes PCB area and thermal resistance (θJA = 95.15°C/W on 4-layer board), ideal for space-constrained wearable and disposable devices.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16150AUT+T, the MAX16150BWT+ offers 60% smaller PCB area and lower thermal resistance in high-density layouts, while TPL7407LPGEDR demands significant firmware and external component investment to replicate basic on/off control - making MAX16150BWT+ the optimal choice for space- and power-constrained single-button systems.

Availability

MAX16150BWT+ is available at Aetrix Electronics and suitable for portable medical sensors, smart wearable trackers, industrial handheld scanners, disposable environmental loggers, and battery-freshness-sealed instrumentation requiring stable component supply across extended production lifecycles.

Supply support for MAX16150BWT+ 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 industrial, medical, and consumer applications, with emphasis on ultra-low-power and high-reliability solutions.

The MAX16150 family targets battery-powered edge devices needing robust, maintenance-free power control - specifically engineered to replace mechanical switches and discrete debounce circuits while enabling true "battery freshness seal" functionality.

FAQ

What is the debounce time configuration for MAX16150BWT+?

The MAX16150BWT+ has a fixed 2-second debounce time (tDB), meaning PB_IN must remain low for ≥2s to register a valid press and assert the latched OUT signal. This value is factory-programmed and not adjustable. Unlike the MAX16150A (50ms), the 2s setting rejects accidental presses and mechanical bounce in high-noise environments, ensuring only intentional user interaction activates the system powered by MAX16150BWT+.

Does MAX16150BWT+ deassert OUT during a long button press?

No. The MAX16150BWT+ maintains OUT in the asserted (high) state even during PB_IN closures exceeding the 16-second shutdown period (tSO). Instead, a long press >16s extends the INT pulse from 32ms to 128ms - providing a distinct hardware-level signal to the host MCU without disrupting power. This behavior differentiates MAX16150BWT+ from the MAX16150A, which deasserts OUT after tSO; MAX16150BWT+ is designed for persistent enable with programmable interrupt semantics.

Can MAX16150BWT+ drive a 15mA load directly?

Yes. The MAX16150BWT+ latched output (OUT) delivers up to 20mA with less than 100mV voltage drop across the full 1.3V–5.5V supply range, making it suitable for directly powering microcontrollers, sensors, or LEDs drawing ≤15mA. At VCC = 3.3V and ISINK = 1.6mA, VOL is guaranteed ≤0.4V; at VCC = 1.3V and ISOURCE = 500µA, VOH remains within VCC − 0.02V. This eliminates external FETs in low-power designs using MAX16150BWT+.

What is the purpose of the CLR input on MAX16150BWT+?

The CLR (Clear) input on MAX16150BWT+ provides asynchronous reset: pulling CLR low forces the latched OUT signal to deassert immediately, regardless of PB_IN state. However, CLR is locked out for 2×tINT (64–256ms) after each OUT assertion to prevent noise-induced resets during power-up or transient events. This makes MAX16150BWT+ suitable for systems requiring controlled shutdown via MCU GPIO or external watchdog, while maintaining immunity to spurious signals.

Is MAX16150BWT+ compatible with 1.8V logic systems?

Yes. MAX16150BWT+ operates down to 1.3V supply voltage and specifies VIH = 80% VCC for PB_IN/CLR when VCC = 1.3V–2.7V, meaning at VCC = 1.8V, a logic high is recognized above ~1.44V - fully compatible with standard 1.8V CMOS outputs. Its INT output is open-drain and can be pulled up to any voltage ≤6V, allowing seamless interfacing with 1.8V, 3.3V, or 5V host MCUs without level shifters - a key design advantage of MAX16150BWT+.