MAX16125 Datasheet, PDF (1/16 Pages) Maxim Integrated Products – Dual Pushbutton Controllers

19-6398; Rev 0; 7/12
MAX16122–MAX16125
Dual Pushbutton Controllers in
Tiny 6-Bump WLP Package
General Description
The MAX16122–MAX16125 pushbutton controllers with
single-supply monitors monitor one or two pushbut-
tons 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 cur-
rent of only 5FA at 3V.
The MAX16122–MAX16125 have pin-programmable or
resistor-adjustable setup delay. Connect the SEL pin to
GND, V_CC, or leave it unconnected to select the different
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
(SRESET) which mirrors the state of the input. The
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 falling edge with a fixed deglitch period of 20ms (t_DB).
The MAX16122–MAX16125 feature a comparator that
monitors the input supply voltage. A variety of factory-
trimmed threshold options accommodate different sup-
ply voltages and tolerances, eliminating external compo-
nents. 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 (-40NC to +125NC).
Benefits and Features
S Low Supply Current: < 5µA (typ) at 3V Over
Temperature
S Precision Factory-Set V_CC Monitoring Threshold
for 1.8V, 2.5V, 3.3V, and 5V Supplies
S Fixed/Pin-Programmable or Resistor-Adjustable
Pushbutton Setup Delay
S Up to 2 Reset Outputs and 2 Debounced
Pushbutton Inputs
S Guaranteed RESET Valid for V_CC Down to 0.95V
S Active-Low RESET Output (Push-Pull or Open-
Drain)
S Immune to Short Power-Supply Transients
S 0.86mm x 1.27mm 6-Bump WLP Package
S -40NC to +125NC Operating Temperature Range
Applications
Smartphones
Tablet PCs
eBook Readers
Portable/Battery-Powered Equipment
Glucose Monitors/Patient Monitors
Portable Instrumentation
Automotive Infotainment
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part,
refer to www.maxim-ic.com/MAX16122.related.
Typical Operating Circuits
1.6V TO 5.5V
0.1µF
VCC
MAX16124
MAX16125
RESET
MR
SRESET
GND
VCC
RESET
INPUT
µP
I/0
GND
Typical Operating Circuits (continued) at end of data sheet.
For pricing, delivery, and ordering information, please contact Maxim Direct
  1
at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.