19-4100; Rev 0; 4/08
1% Accurate, Low-Voltage,
Quad Window Voltage Detector
General Description
The MAX16063 is a 1% accurate, adjustable, quad win-
dow voltage detector in a small thin QFN package. This
device is designed to provide a higher level of system
reliability by monitoring multiple supply voltages and pro-
viding a fault signal when any of the voltages exceed
their overvoltage thresholds or fall below their undervolt-
age thresholds.
The MAX16063 offers user-adjustable voltage thresh-
olds that allow voltages to be monitored down to 0.4V.
This allows the upper and lower trip thresholds of each
window detector to be set externally with the use of
three external resistors.
Each monitored threshold has an independent open-
drain output for signaling a fault condition. The outputs
can be wire-ORed together to provide a single fault out-
put. The open-drain outputs are internally pulled up
with a 30µA current, but can be externally driven to
other voltage levels for interfacing to other logic levels.
Features include a margin input to disable the outputs
during margin testing or any other time after power-up
operations. Also featured is a reset output that
deasserts after a reset timeout period after all voltages
are within their threshold specifications. The reset time-
out is internally set to 140ms (min), but can be external-
ly adjusted to other reset timeouts using an external
capacitor. In addition, the MAX16063 offers a manual
reset input.
This device is offered in a 4mm x 4mm thin QFN pack-
age and is fully specified from -40°C to +125°C.
Features
o
Monitor Four Undervoltage/Overvoltage Conditions
o
1% Accuracy Over Temperature
o
User-Adjustable Voltage Thresholds
(Down to 0.4V)
o
Open-Drain Outputs with Internal Pullups Reduce
the Number of External Components
o
Manual Reset Input
o
Margin Enable Input
o
Fixed or Adjustable
RESET
Timeout
o
Guaranteed to Remain Asserted Down to V
CC
= 1V
o
Fully Specified from -40°C to +125°C
o
Small, 4mm x 4mm Thin QFN Package
MAX16063
Ordering Information
PART
MAX16063TG+
TEMP RANGE
-40°C to +125°C
PIN-PACKAGE
24 TQFN-EP*
+Denotes
a lead-free package.
*EP
= Exposed pad.
For tape-and-reel, add a “T” after the “+.” Tape-and-reel are
offered in 2.5k increments.
Typical Operating Circuit
3.5V
2.5V
1.8V
1.5V
SRT
UVIN1
V
CC
MARGIN
RESET
RESET
V
CC
µC
GND
UVOUT1
Applications
Storage Equipment
Networking/Telecommunications Equipment
Multivoltage ASICs
Servers
Automotive
OVIN2
OVIN1
OVOUT1
UVIN2
MAX16063
UVOUT2
OVOUT2
UVIN3
UVOUT3
OVIN3
OVOUT3
UVIN4
UVOUT4
OVIN4
OVOUT4
MR
GND
Pin Configuration appears at end of data sheet.
________________________________________________________________
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.
1% Accurate, Low-Voltage,
Quad Window Voltage Detector
MAX16063
ABSOLUTE MAXIMUM RATINGS
V
CC
,
OVOUT_, UVOUT_,
RESET,
UVIN_, OVIN_ to GND .........................................-0.3V to +6V
MARGIN, MR,
SRT to GND ........................-0.3V to (V
CC
+ 0.3V)
Input/Output Current
(RESET,
MARGIN,
SRT,
MR,
UVOUT_, OVOUT_)
.......±20mA
Continuous Power Dissipation (T
A
= +70°C)
24-Pin Thin QFN (derate 16.9mW/°C above +70°C) ....1666mW
Operating Temperature Range .........................-40°C to +125°C
Junction Temperature .....................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
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
= 2.0V to 5.5V, T
A
= -40°C to +125°C, unless otherwise specified. Typical values are at V
CC
= 3.3V, T
A
= +25°C.) (Note 1)
PARAMETER
Operating Voltage Range
Supply Current (Note 3)
UVLO (Undervoltage Lockout)
UVLO Hysteresis
UVIN_/OVIN_
Adjustable Threshold (UVIN_
Falling/OVIN_ Rising)
UVIN_/OVIN_ Hysteresis
UVIN_/OVIN_ Input Current
RESET
SRT = V
CC
Reset Timeout
t
RP
C
SRT
= 1500pF (Note 4)
C
SRT
= 100pF
C
SRT
= open
SRT Ramp Current
SRT Threshold
SRT Hysteresis
UVIN_/OVIN_ to Reset Delay
t
RD
UVIN_ falling/OVIN_ rising
I
SRT
V
SRT
= 0V
460
1.173
140
2.43
200
3.09
0.206
0.05
600
1.235
100
20
740
1.293
nA
V
mV
µs
280
3.92
ms
V
TH
V
TH
_
HYS
I
IB
UVIN_ falling/OVIN_ rising (percentage of the
threshold)
-100
0.390
0.394
0.5
+100
0.398
V
% V
TH
nA
SYMBOL
V
CC
I
CC
V
UVLO
V
UVLO_HYS
(Note 2)
V
CC
= 3.3V, outputs deasserted
V
CC
= 5V, outputs deasserted
V
CC
rising
1.62
CONDITIONS
MIN
1.0
45
50
1.80
65
TYP
MAX
5.5
65
70
1.98
UNITS
V
µA
V
mV
2
_______________________________________________________________________________________
1% Accurate, Low-Voltage,
Quad Window Voltage Detector
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 2.0V to 5.5V, T
A
= -40°C to +125°C, unless otherwise specified. Typical values are at V
CC
= 3.3V, T
A
= +25°C.) (Note 1)
PARAMETER
RESET
Output-Voltage Low
SYMBOL
V
OL
CONDITIONS
V
CC
= 3.3V, I
SINK
= 10mA,
RESET
asserted
V
CC
= 2.5V, I
SINK
= 6mA,
RESET
asserted
V
CC
= 1.2V, I
SINK
= 50µA,
RESET
asserted
RESET
Output-Voltage High
MR
Input-Voltage Low
MR
Input-Voltage High
MR
Minimum Pulse Width
MR
Glitch Rejection
MR
to
RESET
Delay
MR
Pullup Resistance
OUTPUTS (UVOUT_/OVOUT_)
UVOUT_, OVOUT_
Output-
Voltage Low
UVOUT_, OVOUT_
Output-
Voltage High
UVIN_/OVIN_ to
UVOUT_/
OVOUT_
Propagation Delay
DIGITAL LOGIC
MARGIN
Input-Voltage Low
MARGIN
Input-Voltage High
MARGIN
Pullup Resistance
MARGIN
Delay Time
t
MD
V
IL
V
IH
Pulled up to V
CC
Rising or falling (Note 5)
0.7 x
V
CC
12
20
50
28
0.3 x
V
CC
V
V
kΩ
µs
V
OL
V
OH
t
D
V
CC
= 3.3V, I
SINK
= 2mA
V
CC
= 2.5V, I
SINK
= 1.2mA
V
CC
≥
2.0V, I
SOURCE
= 6µA
(V
TH
- 100mV) to (V
TH
+ 100mV)
0.8 x
V
CC
20
0.3
0.3
V
V
µs
12
V
OH
V
IL
V
IH
0.7 x
V
CC
1
100
200
20
28
V
CC
≥
2.0V, I
SOURCE
= 6µA,
RESET
deasserted
0.8 x
V
CC
0.3 x
V
CC
MIN
TYP
MAX
0.3
0.3
0.3
V
V
V
µs
ns
ns
kΩ
V
UNITS
MAX16063
Note 1:
Note 2:
Note 3:
Note 4:
Devices are tested at T
A
= +25°C and guaranteed by design for T
A
= T
MIN
to T
MAX
.
The outputs are guaranteed to remain asserted down to V
CC
= 1V.
Measured with
MR
and
MARGIN
unconnected.
The minimum and maximum specifications for this parameter are guaranteed by using the worse case of the SRT current
and SRT threshold specifications.
Note 5:
Amount of time required for logic to lock/unlock outputs from margin testing.
_______________________________________________________________________________________
3
1% Accurate, Low-Voltage,
Quad Window Voltage Detector
MAX16063
Typical Operating Characteristics
(V
CC
= 3.3V, T
A
= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX16063 toc01
SUPPLY CURRENT
vs. TEMPERATURE
MARGIN AND MR
UNCONNECTED
V
CC
= 5V
MAX16063 toc02
UVIN_/OVIN_ THRESHOLD
vs. SUPPLY VOLTAGE
MAX16063 toc03
60
55
SUPPLY CURRENT (µA)
50
45
40
35
30
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
MARGIN AND MR
UNCONNECTED
65
60
SUPPLY CURRENT (µA)
55
50
45
V
CC
= 3.3V
40
35
30
V
CC
= 2.5V
0.450
0.425
INPUT THRESHOLD
0.400
0.375
0.350
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
SUPPLY VOLTAGE (V)
5.5
SUPPLY VOLTAGE (V)
UVIN_/OVIN_ THRESHOLD
vs. TEMPERATURE
MAX16063 toc04
OUTPUT VOLTAGE
vs. SINK CURRENT
MAXIMUM TRANSIENT DURATION (µs)
100
MAX16063 toc05
MAXIMUM TRANSIENT DURATION
vs. INPUT OVERDRIVE
OUTPUT GOES LOW
ABOVE THIS LINE
MAX16063 toc06
0.45
0.44
0.43
INPUT THRESHOLD
0.42
0.41
0.40
0.39
0.38
0.37
0.36
0.35
600
500
400
300
200
100
0
75
V
OUT_
(mV)
50
25
UVOUT_ / OVOUT_ LOW
0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
0
1
2
3
4
5
6
7
8
SINK CURRENT (mA)
1
10
100
1000
INPUT OVERDRIVE (mV)
4
_______________________________________________________________________________________
1% Accurate, Low-Voltage,
Quad Window Voltage Detector
Typical Operating Characteristics (continued)
(V
CC
= 3.3V, T
A
= +25°C, unless otherwise noted.)
MAX16063
RESET TIMEOUT PERIOD
vs. TEMPERATURE
197
RESET TIMEOUT PERIOD (ms)
196
195
194
193
192
191
190
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
MAX16063 toc07
RESET TIMEOUT DELAY
MAX16063 toc08
198
UVIN1
1V/div
UVOUT1
2V/div
RESET
2V/div
SRT = V
CC
40ms/div
UVIN_ TO UVOUT_ DELAY TIME
MAX16063 toc09
MARGIN ENABLE FUNCTION
MAX16063 toc10
UVIN1
2V/div
MARGIN
2V/div
UVOUT_
2V/div
UVOUT1
2V/div
RESET
2V/div
UVIN_ BELOW RESPECTIVE THRESHOLDS
4µs/div
100µs/div
_______________________________________________________________________________________
5
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