19-5112; Rev 0; 1/10
µP Supervisory Circuits in
4-Bump (1mm x 1mm) Chip-Scale Package
General Description
The MAX16072/MAX16073/MAX16074 ultra-small, ultra-
low-power, microprocessor (µP) supervisory circuits
feature a precision band-gap reference, comparator,
and internally trimmed resistors that set the threshold
voltage. Designed to monitor the system supply voltage
and assert an output during power-up, power-down,
and brownout conditions, these devices provide excel-
lent circuit reliability and low cost by eliminating external
components and adjustments when monitoring nominal
system voltage from 1.8V to 3.6V.
The MAX16072 has a push-pull, active-low reset output,
the MAX16073 has a push-pull, active-high reset output,
and the MAX16074 has an open-drain active-low reset
output. The devices are designed to ignore fast tran-
sients on V
CC
. The devices also include a manual reset
input (MR).
The MAX16072/MAX16073/MAX16074 are available in a
1mm x 1mm, space-saving, 4-bump, chip-scale pack-
age (UCSP
TM
).
S
Ultra-Low, 0.7µA Supply Current
S
Ultra-Small (1mm x 1mm), 4-Bump UCSP
S
20µs, 8ms, 34ms, and 140ms Reset Timeout
Options Available
S
Factory-Trimmed Reset Thresholds Available
from 1.58V to 3.08V in Approximately 100mV
Increments
S Q2.5%
Threshold Accuracy Over Temperature
S
Manual Reset Input
S
Guaranteed Reset Valid to V
CC
= 1.0V
S
Immune to Short V
CC
Transient
Features
MAX16072/MAX16073/MAX16074
Ordering Information
PART
MAX16072RS_
_D_+
MAX16073RS_
_D_+
RESET OUTPUT TYPE
Push-Pull, Active-Low
Push-Pull, Active-High
PIN-
PACKAGE
4 UCSP
4 UCSP
4 UCSP
Applications
Portable/Battery-Powered Equipment
Cell Phones
PDAs
MP3 Players
Digital Cameras
MAX16074RS_
_D_+ Open-Drain, Active-Low
Note:
All devices are specified over the -40NC to +85NC operat-
ing temperature range.
Insert the desired suffix numbers (from Table 1) into the blanks
“RS_ _D” to indicate the reset trip threshold. Insert the desired
suffix number (from Table 2) into the blank ”D_+” to indicate the
reset timeout. Minimum order quantity may apply.
+Denotes
a lead(Pb)-free/RoHS-compliant package.
Typical Operating Circuit
V
CC
VCC
V
CC
µP
RESET
INPUT
GND
MR
MAX16072
MAX16073
(RESET)/
MAX16074
RESET
GND
( ) FOR THE MAX16073 ONLY
UCSP is a trademark of Maxim Integrated Products, Inc.
_______________________________________________________________
Maxim Integrated Products
1
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.
µP Supervisory Circuits in
4-Bump (1mm x 1mm) Chip-Scale Package
MAX16072/MAX16073/MAX16074
ABSOLUTE MAXIMUM RATINGS
(Voltages referenced to GND.)
V
CC
,
MR
..................................................................-0.3V to +6V
RESET,
RESET
Push-Pull ......................... -0.3V to (V
CC
+ 0.3V)
RESET
Open-Drain ..................................................-0.3V to +6V
Output Current (all pins) .................................................
Q20mA
Continuous Power Dissipation (T
A
= +70NC)
4-Bump UCSP (derate 3mW/NC above +70NC) ..........239mW
Operating Temperature Range .......................... -40NC to +85NC
Storage Temperature Range............................ -65NC to +150NC
Junction Temperature .....................................................+150NC
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
operation 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.
ELECTRICAL CHARACTERISTICS
(V
CC
= 1.5V to 2.75V, T
A
= -40NC to +85NC, unless otherwise noted. Typical values are at T
A
= +25NC and V
CC
= 3.6V.) (Note 1)
PARAMETER
Operating Voltage Range
Supply Current
SYMBOL
V
CC
I
CC
CONDITIONS
T
A
= 0NC to +85NC
T
A
= -40NC to +85NC
V
CC
= 1.8V for V
TH
P
1.66V
V
CC
= 3.6V, no load
V
CC
falling, T
A
= +25NC
Detector Threshold
V
TH
See Table 1
V
CC
falling, T
A
= -40NC to
+85NC
V
TH
-
1.5%
V
TH
-
2.5%
MIN
1.0
1.2
0.7
1.0
V
TH
V
TH
6.3
40
0.7 x
V
CC
0.7 x
V
CC
25
V
CC
R
1.2V, I
SINK
= 100FA
V
CC
R
1.65V, I
SINK
= 1mA
V
CC
R
1.65V, I
SOURCE
= 500FA
Output-Voltage High
V
OH
V
CC
R
1.2V, I
SOURCE
= 50FA
Open-Drain
RESET
Output
Leakage Current
TIMING
MR
Minimum Pulse Width
MR
Glitch Rejection
MR
to RESET/RESET
Propagation Delay
V
CC
to Reset Delay
t
MPW
t
EGR
t
OFF
t
ON
t
DL
(Note 2)
(Note 2)
MR
falling
MR
rising
V
CC
= (V
TH
+ 100mV) to (V
TH
-100mV)
0.8
100
1
200
20
2
400
90
Fs
ns
Fs
ns
Fs
RESET
not asserted (Note 2)
0.8 x
V
CC
0.8 x
V
CC
0.1
50
75
0.4
0.3
TYP
MAX
5.5
5.5
1.2
1.5
V
TH
+
1.5%
V
TH
+
2.5%
UNITS
V
FA
V
Detector Threshold Hysteresis
Detector Threshold Tempco
MR
INPUT
V
HYST
DV
TH
/NC
V
IH
V
CC
rising, V
TH
P
1.66V (Note 2)
(Note 2)
mV
ppm/NC
MR
Input High Voltage
V
IL
MR
Pullup Resistance
RESET/RESET
OUTPUT (Note 3)
Output-Voltage Low
V
OL
V
kI
V
V
FA
2
______________________________________________________________________________________
µP Supervisory Circuits in
4-Bump (1mm x 1mm) Chip-Scale Package
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 1.5V to 2.75V, T
A
= -40NC to +85NC, unless otherwise noted. Typical values are at T
A
= +25NC and V
CC
= 3.6V.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
V
CC
rising, V
CC
= (V
TH
- 100mV)
to (V
TH
+ 100mV)
MAX1607_RSD0+
MAX1607_RSD1+
MAX1607_RSD2+
MAX1607_RSD3+
MIN
20
8
34
140
TYP
80
13
52
210
MAX
120
17
69
280
UNITS
Fs
ms
ms
ms
MAX16072/MAX16073/MAX16074
Reset Active Timeout Period
t
RP
Note 1:
Production testing done at T
A
= +25NC only. Overtemperature limits are guaranteed by design and are not production
tested.
Note 2:
Guaranteed by design.
Note 3:
Reset is guaranteed down to V
CC
= 1.0V.
Typical Operating Characteristics
(T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX16072 toc01
SUPPLY CURRENT
vs. TEMPERATURE
MAX16072 toc02
NORMALIZED RESET THRESHOLD
vs. TEMPERATURE
NORMALIZED RESET THRESHOLD (%)
MAX16072 toc03
5
4
SUPPLY CURRENT (µA)
3
2
1
0
3.0
2.5
SUPPLY CURRENT (µA)
2.0
1.5
1.0
0.5
0
V
CC
= 3V
V
CC
= 5V
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-40
-15
10
35
60
V
CC
RISING
V
CC
FALLING
V
CC
= 1.8V
-40
-15
10
35
60
85
1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
SUPPLY VOLTAGE (V)
85
TEMPERATURE (°C)
TEMPERATURE (°C)
_______________________________________________________________________________________
3
µP Supervisory Circuits in
4-Bump (1mm x 1mm) Chip-Scale Package
MAX16072/MAX16073/MAX16074
Typical Operating Characteristics (continued)
(T
A
= +25°C, unless otherwise noted.)
OUTPUT LOW VOLTAGE
vs. SINK CURRENT
MAX16072 toc04
OUTPUT HIGH VOLTAGE
vs. SOURCE CURRENT
MAX16072 toc05
MAXIMUM TRANSIENT DURATION
vs. RESET THRESHOLD OVERDRIVE
45
TRANSIENT DURATION (µs)
40
35
30
25
20
15
10
5
0
1
10
100
1000
RESET THRESHOLD OVERDRIVE (mV)
V
RST
= 3.08V
V
RST
= 1.63V
RESET OCCURS ABOVE LINES
MAX16072 toc06
2.00
1.75
1.50
1.25
1.00
0.75
0.50
0.25
0
0
2
4
6
8
V
CC
= 1.8V
V
CC
= 3V
V
OL
(V)
5.0
4.5
4.0
3.5
V
OH
(V)
3.0
2.5
2.0
1.5
1.0
0.5
0
0
2
4
6
8
V
CC
= 1.8V
V
CC
= 3V
V
CC
= 5V
50
V
CC
= 5V
10 12 14 16 18 20
10 12 14 16 18 20
I
SINK
(mA)
I
SOURCE
(mA)
V
CC
TO RESET PROPAGATION DELAY
vs. TEMPERATURE
MAX16072 toc07
V
CC
TO RESET PROPAGATION DELAY
vs. TEMPERATURE
V
OD
= OVERDRIVE VOLTAGE
100
PROPAGATION DELAY (µS)
MAX16072 toc08
MR TO RESET DELAY (t
ON
)
vs. V
CC
MAX16072 toc09
80
V
OD
= OVERDRIVE VOLTAGE
PROPAGATION DELAY (µs)
60
V
OD
= 100mV
40
V
OD
= 200mV
120
150
120
RESET DELAY (ns)
90
60
30
V
OD
= 10mV
80
60
40
20
V
OD
= 200mV
V
CC
RISING
0
V
OD
= 20mV
V
OD
= 100mV
20
V
OD
= 10mV
V
OD
= 20mV
V
CC
FALLING
MR RISING
0
-40
-15
10
35
60
85
TEMPERATURE (°C)
-40
-15
10
35
60
85
0
1.650
1.925
2.200
V
CC
(V)
2.475
2.750
TEMPERATURE (°C)
MR TO RESET DELAY (t
OFF
)
vs. V
CC
MAX16072 toc10
MR TURN-ON
MAX16072 toc11
MR TURN-OFF
MAX16072 toc12
1.25
1.00
RESET DELAY (µs)
0.75
0.50
0.25
MR FALLING
0
1.650
1.925
2.200
V
CC
(V)
2.475
MR
1V/div
MR
1V/div
RESET
1V/div
RESET
1V/div
2.750
100ns/div
200ns/div
4
______________________________________________________________________________________
µP Supervisory Circuits in
4-Bump (1mm x 1mm) Chip-Scale Package
Bump Configuration
MAX16072
MAX16073
MAX16074
1
2
V
CC
MAX16072/MAX16073/MAX16074
TOP VIEW
(BUMP SIDE DOWN)
+
A
GND
B
RESET/
(RESET)
MR
UCSP
( ) FOR THE MAX16073 ONLY
Bump Description
BUMP
MAX16072
A1
MAX16073
A1
MAX16074
A1
NAME
GND
Ground
Active-Low Push-Pull Reset Output.
RESET
changes from high to
low when V
CC
drops below the detector threshold (V
TH
) or
MR
is
pulled low.
RESET
remains low for the reset timeout period after V
CC
exceeds V
TH
and
MR
is high. When
MR
is low,
RESET
is low.
Active-High Push-Pull Reset Output.
RESET
changes from low to
high when V
CC
drops below the detector threshold (V
TH
) or
MR
is
pulled low.
RESET
remains high for the reset timeout period after V
CC
exceeds V
TH
and
MR
is high. When
MR
is low,
RESET
is high.
Active-Low Open-Drain Reset Output.
RESET
changes from high-
impedance to active-low when V
CC
drops below the detector thresh-
old (V
TH
) or
MR
is pulled low.
RESET
remains low for the reset timeout
period after V
CC
exceeds the reset threshold and
MR
is high. When
MR
is low,
RESET
is low.
Supply Voltage and Input for the Reset Threshold Monitor
Active-Low Manual-Reset Input. Drive low to force a reset. Reset
remains active as long as
MR
is low and for the reset timeout period (if
applicable) after
MR
is driven high.
MR
has an internal pullup resistor
connected to V
CC,
and may be left unconnected if not used.
FUNCTION
B1
—
—
RESET
—
B1
—
RESET
—
—
B1
RESET
A2
A2
A2
V
CC
B2
B2
B2
MR
_______________________________________________________________________________________
5
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