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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

V

CC

V

CC

MAX16124

MAX16125

RESET

MR

SRESET

GND

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

at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

1

MAX16122–MAX16125

Dual Pushbutton Controllers in

Tiny 6-Bump WLP Package

ABSOLUTE MAXIMUM RATINGS

(All pins referenced to GND)

V

CC

..........................................................................-0.3V to +6V

RESET, SRESET

to GND

Open-Drain ..............................................................-0.3V to +6V

Push-Pull................................................... -0.3V to (V

CC

+ 0.3V)

MR, MR1, MR2

........................................................-0.3V to +6V

SEL ..........................................................................-0.3V to +6V

Input/Output Current (all pins) ...........................................20mA

Continuous Power Dissipation (T

A

= +70NC) (Multilayer Board)

WLP (derate 10.5mW/NC above +70NC) ......................840mW

Operating Temperature Range ........................ -40NC to +125NC

Junction Temperature .....................................................+150NC

Storage Temperature Range............................-65NC to +150

o

C

Soldering Temperature (reflow) ......................................+260NC

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional opera-

tion of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute

maximum rating conditions for extended periods may affect device reliability.

PACKAGE THERMAL CHARACTERISTICS (Note 1)

WLP

Junction-to-Ambient Thermal Resistance (q

JA

) ..........95°C/W

Note 1:

Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-

layer board. For detailed information on package thermal considerations, refer to

www.maxim-ic.com/thermal-tutorial.

ELECTRICAL CHARACTERISTICS

(V

CC

= 1.6V to 5.5V, T

A

= -40NC to +125NC, unless otherwise noted. Typical values are at T

A

= +25NC.) (Note 2)

PARAMETER

Operating Voltage Range

V

CC

Undervoltage Lockout

V

CC

Supply Current

Supply Current with Oscillator

Running

V

CC

Reset Threshold

V

CC

Reset Threshold Hysteresis

Reset Threshold Tempco

V

CC

to

RESET

Output Delay

Reset Timeout Period

Manual Reset Setup Delay

Debounce Period

t

D

t

RP

t

SU

t

DB

V

CC

falling at 10mV/Fs from (V

TH

+ 100mV)

to (V

TH

- 100mV)

See Table 2

Internal timing (see Tables 1a, 1b, 1c)

-10

18

SYMBOL

V

CC

V

CCUVLO

I

CC

I

CC2

V

TH

V

HYST

V

CC

= 5V, steady-state condition;

MR, MR1,

MR2, RESET,

and

SRESET

not asserted

V

CC

= 3V

V

CC

falling

-2.5%

CONDITIONS

RESET

state guaranteed for V

CC

R

0.95V

MIN

1.6

1.25

8

5

V

TH

2

30

10

t

RP

t

SU

20

+10

22

TYP

MAX

5.5

1.55

10

+2.5%

UNITS

V

FA

V

%

ppm/

o

C

Fs

%

ms

2

MAX16122–MAX16125

Dual Pushbutton Controllers in

Tiny 6-Bump WLP Package

ELECTRICAL CHARACTERISTICS (continued)

(V

CC

= 1.6V to 5.5V, T

A

= -40NC to +125NC, unless otherwise noted. Typical values are at T

A

= +25NC.) (Note 2)

PARAMETER

OUTPUTS (RESET,

SRESET)

V

CC

= V

TH(MIN)

, V

TH

> 4.25V,

I

SINK

= 10mA

V

CC

= V

TH(MIN)

, V

TH

> 2.5V,

I

SINK

= 3.2mA

V

CC

= V

TH(MIN)

, V

TH

> 1.67V,

I

SINK

= 1mA

V

CC

= V

TH(MIN)

, V

TH

> 1V, I

SINK

= 100FA

V

CC

> 0.95V, V

CC

falling, I

SINK

= 15FA

V

CC

> 0.95V, I

SOURCE

= 15FA

V

CC

> 1.2V, I

SOURCE

= 100FA

RESET, SRESET

Output High

(Push-Pull Outputs)

V

OH

V

CC

> 1.67V, I

SOURCE

= 150FA

V

CC

> 2.7V, I

SOURCE

= 500FA

V

CC

> 4.5V, I

SOURCE

= 800FA

RESET, SRESET

Output Leakage

Current (Open-Drain Outputs)

MANUAL RESET INPUTS (MR,

MR1, MR2)

MR1, MR2, MR

Input Voltage Low

MR1, MR2, MR

Input Voltage High

Manual Reset Minimum Pulse

Width

Manual Reset Glitch Rejection

Manual Reset to Soft Reset Delay

MR1, MR2, MR

Internal Pullup

Resistance

SELECT (SEL) LOGIC INPUT

SEL Input Low Voltage

SEL Input High Voltage

SEL Input Leakage

0.85 x

V

CC

-8

+8

0.15 x

V

CC

V

µA

t

MRD

25

V

IL

V

IH

0.7 x V

CC

1

100

200

50

80

0.3 x V

CC

V

Fs

ns

kI

0.8 x

V

CC

0.8 x

V

CC

0.8 x

V

CC

0.8 x

V

CC

0.8 x

V

CC

1

0.4

V

FA

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

RESET, SRESET

Output Low

V

OL

Note 2:

All parameters are production tested at T

A

= +25NC. Limits over the operating temperature range are guaranteed by

design.

3

MAX16122–MAX16125

Dual Pushbutton Controllers in

Tiny 6-Bump WLP Package

Typical Operating Characteristics

(V

CC

= 5V, MAX16125WTDB29+, T

A

= +25°C, unless otherwise noted.)

RESET TIMEOUT PERIOD

vs. TEMPERATURE

MAX16122 toc02

MAX16122 toc03

SUPPLY CURRENT vs. SUPPLY VOLTAGE

9

SUPPLY CURRENT (µA)

8

7

6

5

4

3

2

1

1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0

SUPPLY VOLTAGE (V)

MAX16122 toc01

SUPPLY CURRENT vs. TEMPERATURE

10

8

SUPPLY CURRENT (µA)

6

4

2

2.10

10

RESET TIMEOUT PERIOD (ms)

T

A

= +85°C

T

A

= +125°C

2.05

2.00

T

A

= +25°C

T

A

= -40°C

1.95

V

CC

= 3.3V

0

-40 -25 -10 5 20 35 50 65 80 95 110 125

TEMPERATURE (°C)

1.90

V

CC

= 3.0V

-40 -25 -10 5 20 35 50 65 80 95 110 125

TEMPERATURE (°C)

MAXIMUM V

CC

TRANSIENT DURATION

vs. RESET THRESHOLD OVERDRIVE

MAXIMUM V

CC

TRANSIENT DURATION (µs)

V

CC

RESET THRESHOLD

vs. TEMPERATURE

MAX16122 toc04

MAX16125WTDB29+

12

10

8

6

4

2

0

0.05

0.10

0.15

0.20

4

V

CC

RESET THRESHOLD (%)

3

2

1

0

-1

-2

-3

-4

-5

MAX16125WTDB29+

NORMALIZED TO T

A

= +25°C

-40 -25 -10 5 20 35 50 65 80 95 110 125

TEMPERATURE (°C)

0.25

RESET THRESHOLD OVERDRIVE (V)

MAX16122 toc05

14

5

4

MAX16122–MAX16125

Dual Pushbutton Controllers in

Tiny 6-Bump WLP Package

Typical Operating Characteristics (continued)

(V

CC

= 5V, MAX16125WTDB29+, T

A

= +25°C, unless otherwise noted.)

V

CC

TO RESET OUTPUT DELAY

vs. TEMPERATURE

MAX16122 toc06

RESET OUTPUT-LOW VOLTAGE

vs. SINK CURRENT

MAX16122 toc07

PUSHBUTTON TIMING

MAX16122 toc08

10

V

CC

TO RESET OUTPUT DELAY (µs)

8

6

4

2

0

0.40

0.35

0.30

RESET V

OL

(V)

0.25

0.20

0.15

0.10

0.05

MAX16125WTDB29+

MR1

2V/div

SRESET

2V/div

V

CC

= 1.5V

V

CC

= 2.5V

t

SU

= 13.03µs

RESET

2V/div

V

CC

= 2.9V

0

0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0

SINK CURRENT (mA)

2s/div

-40 -25 -10 5 20 35 50 65 80 95 110 125

TEMPERATURE (°C)

0

MAX16122 toc09

22

20

18

SETUP DELAY (s)

16

14

12

10

8

6

4

2

0

10 60 110 160 210 260 310 360 410 460

SEL RESISTANCE TO GND (k

I

)

V

TH

+ 100mV

100mV/div

RESET

2V/div

4µs/div

MAX16122 toc10

V

CC

TO RESET DELAY

t

SU

vs. R

SEL

24

5

MAX16124

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