Analog Devices Inc./Maxim Integrated MAX16151AWT+

Overview

The MAX16151AWT+ from Analog Devices is a high-voltage pushbutton on/off controller with integrated switch debouncing, latched 3V output, and one-shot interrupt generation. It accepts noisy mechanical switch inputs up to ±60V, operates from +5V to +36V supply, consumes ≤15μA standby current, and features ±10kV HBM ESD protection - enabling robust power control in industrial handheld instruments and telecom equipment.

For engineers reviewing the MAX16151AWT+ datasheet, MAX16151AWT+ pinout, MAX16151AWT+ application, or MAX16151AWT+ equivalent, this device delivers precise timing-controlled power sequencing (50ms debounce, 8s shutdown), active-high push-pull latched output, and system-level interrupt signaling - critical for battery-powered systems requiring reliable, low-quiescent-power enable control.

Technical Context

The MAX16151AWT+ implements an internal 3V regulator feeding its active-high push-pull OUT pin, while PB_IN uses internal pullup and hysteresis (100mV) to reject noise. Its timing logic distinguishes short presses (>50ms) that assert OUT from long presses (>8s) that deassert OUT - a defining behavior of the "A" variant per Table 1.

INT is an active-low open-drain output with fixed 32ms pulse width for standard presses and extended 128ms duration for shutdown-triggering presses; CLR provides asynchronous reset with 2×tINT lockout window after OUT assertion to prevent spurious clearing.

Key Specifications

Pinout & Package

MAX16151AWT+ is packaged in a 1.23mm × 0.83mm, 6-bump wafer-level package (WLP) with bottom-side solder bumps. Pin mapping follows the 6-WLP land pattern (Outline 21-100258, Land Pattern AN1891).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16151BWT+, the MAX16151AWT+ provides deterministic hardware shutdown on long press - eliminating MCU dependency for safety-critical power-off. Versus TPL7407LDR, it integrates timing, regulation, and ESD protection into a single 0.83mm × 1.23mm WLP, reducing total solution size and quiescent current by >99%.

Availability

MAX16151AWT+ is available at Aetrix Electronics and suitable for portable instruments, industrial control panels, and telecom line cards requiring stable component supply, guaranteed RoHS compliance, and long-term lifecycle support.

Supply support for MAX16151AWT+ 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 semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies.

The MAX16151AWT+ belongs to Analog Devices' high-voltage power management controller product line, designed specifically for robust, low-power enable sequencing in harsh industrial and portable environments.

FAQ

What is the key functional difference between MAX16151AWT+ and MAX16151BWT+?

The MAX16151AWT+ deasserts its latched OUT signal when PB_IN is held low longer than the 8s shutdown period (tSO), enabling hardware-initiated power-off. In contrast, MAX16151BWT+ maintains OUT assertion regardless of press duration - using the same long press only to extend the INT pulse to 128ms. This makes MAX16151AWT+ essential for applications requiring fail-safe shutdown without MCU involvement.

Does MAX16151AWT+ require external components for basic operation?

Yes - a 0.1μF ceramic capacitor is required between VCC and GND for internal regulator stability. The INT output needs an external pullup resistor (typically 10kΩ to OUT or system VDD), and PB_IN may require series resistance if driving from high-capacitance cabling. No external debounce RC network or level-shifting circuitry is needed due to integrated functionality in MAX16151AWT+.

Can MAX16151AWT+ drive a power MOSFET directly?

No - the MAX16151AWT+ OUT pin is rated for ≤1.6mA sink current and 50μA source current under load. It is intended to drive enable inputs of voltage regulators or logic-level signals. To control higher-current loads, use MAX16151AWT+ OUT to gate a discrete MOSFET or dedicated load switch like the MAX16141, which accepts 3V logic-level enable inputs.

What is the purpose of the CLR input on MAX16151AWT+?

The CLR input provides asynchronous reset: pulling CLR low forces the latched OUT signal to deassert immediately, regardless of PB_IN state. It is commonly used for MCU-initiated shutdown or fault recovery. Note that CLR is ignored for ~64ms (2×tINT) after OUT assertion to prevent accidental clearing during debounce or interrupt generation - a timing feature confirmed in the MAX16151AWT+ datasheet's CLR lockout specification.

Is MAX16151AWT+ compatible with 3.3V or 5V logic systems?

Yes - the MAX16151AWT+ OUT pin delivers a regulated 3.0V output, making it natively compatible with 3.3V logic thresholds (VIH ≥ 1.7V). Its INT output is open-drain and can be pulled up to 3.3V, 5V, or even its own OUT rail. PB_IN and CLR accept logic levels referenced to GND, with VIH = 1.7V and VIL = 0.7V - ensuring interoperability with both 3.3V and 5V microcontrollers without level shifters.