General Description

The MAX16122–MAX16125 pushbutton controllers with

single-supply monitors monitor one or two pushbuttons and

generate a hard reset signal if the buttons are pushed and

held for a setup delay. These devices make it easy to “hide”

the hard reset function in an existing pushbutton, such as a

soft power switch. The devices operate from 1.6V to 5.5V

and consume a quiescent current of only 5µA at 3V.

The MAX16122–MAX16125 have pin-programmable or

resistor-adjustable setup delay. Connect the SEL pin to

setup delays (depending on part suffix, see Table 1a) or

connect an external resistor from SEL to GND to set the

setup delays (E suffix only, see Table 1b).

The MAX16124/MAX16125 have one manual reset input

(MR), a reset output (RESET), and a soft reset output

MAX16122/MAX16123 have two identical manual reset

inputs (MR1 and MR2) and one reset output (RESET). A

deglitch block is connected to each input to add a delay to

The devices feature a comparator that monitors the

input supply voltage. A variety of factory-trimmed threshold

options accommodate different supply voltages and

tolerances, eliminating external components. The factory-

set reset thresholds range from 1.58V to 4.63V to monitor

5V, 3.3V, 2.5V, and 1.8V supplies.

The MAX16122–MAX16125 are offered in a tiny 0.86mm

x 1.27mm, 6-bump WLP package and are specified over

the automotive temperature range (-40°C to +125°C).

Benefits and Features

● Low Supply Current: < 5μA (typ) at 3V Over Temperature

1.8V, 2.5V, 3.3V, and 5V Supplies

● Fixed/Pin-Programmable or Resistor-Adjustable

Pushbutton Setup Delay

● Up to 2 Reset Outputs and 2 Debounced Pushbutton

Inputs

● Active-Low RESET Output (Push-Pull or Open-Drain)

● Immune to Short Power-Supply Transients

● 0.86mm x 1.27mm 6-Bump WLP Package

● -40°C to +125°C Operating Temperature Range

Applications

● Smartphones

● Tablet PCs

● eBook Readers

● Portable/Battery-Powered Equipment

● Glucose Monitors/Patient Monitors

● Portable Instrumentation

Ordering Information appears at end of data sheet.

Typical Operating Circuits (continued) appears at end of data sheet.

19-6398; Rev 2; 4/16

SRESET

RESET

RESET

INPUT

I/0

MR

GND

GND

MAX16124

MAX16125

µP

0.1µF

1.6V TO 5.5V

MAX16122–MAX16125

Dual Pushbutton Controllers in

Tiny 6-Bump WLP Package

Typical Operating Circuits