19-4099; Rev 0; 4/08
1% Accurate, Quad-/Hex-/Octal-Voltage
µP Supervisors
General Description
The MAX16060/MAX16061/MAX16062 are 1% accurate,
quad-/hex-/octal-voltage µP supervisors in a small thin
QFN package. These devices provide supervisory func-
tions for complex multivoltage systems. The MAX16060
monitors four voltages, the MAX16061 monitors six volt-
ages, and the MAX16062 monitors eight voltages.
These devices offer independent outputs for each mon-
itored voltage along with a reset output that asserts
whenever any of the monitored voltages fall below their
respective thresholds (down to 0.4V) or the manual
reset input is asserted. The reset output remains assert-
ed for the reset timeout after all voltages are above their
respective thresholds and the manual reset input is
deasserted. The minimum reset timeout is internally set
to 140ms or can be adjusted with an external capacitor.
All open-drain outputs have internal 30µA pullups that
eliminate the need for external pullup resistors.
However, each output can be driven with an external
voltage up to 5.5V. Other features offered include a
manual reset input, a tolerance pin for selecting 5% or
10% input thresholds, and a margin enable function for
deasserting the outputs during margin testing.
An additional feature is a watchdog timer that asserts
RESET
when the watchdog timeout period (1.6s typ) is
exceeded. The watchdog timer can be disabled by
leaving WDI unconnected.
These devices are offered in 16-, 20-, and 24-pin thin
QFN packages (4mm x 4mm) and are fully specified
from -40°C to +125°C.
Features
o
Fixed Thresholds for 3.3V, 2.5V, and 1.8V Systems
o
Adjustable Thresholds Monitor Low Voltages
(Down to 0.4V)
o
1% Accurate over Temperature
o
Open-Drain Outputs with Internal Pullups Reduce
the Number of External Components
o
Fixed 140ms (min) or Capacitor-Adjustable Reset
Timeout
o
Manual Reset, Margin Enable, and Tolerance
Select Inputs
o
Watchdog Timer
1.6s (typ) Timeout Period
54s Startup Delay After Reset
o
Monitors Four (MAX16060), Six (MAX16061), or
Eight (MAX16062) Voltages
o
RESET
Output Indicates All Voltages Present
o
Independent Voltage Monitors
o
Guaranteed to Remain Asserted Down to V
CC
= 1V
o
Small (4mm x 4mm) Thin QFN Package
MAX16060/MAX16061/MAX16062
Applications
Storage Equipment
Servers
Networking/Telecommun-
ication Equipment
Multivoltage ASICs
Automotive
Typical Operating Circuit
Ordering Information
PART
MAX16060_TE+
MAX16061_TP+
MAX16062_TG+
TEMP RANGE
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
PIN-PACKAGE
16 TQFN-EP*
20 TQFN-EP*
24 TQFN-EP*
V
IN1
V
IN2
V
IN3
V
CC
IN1
IN2
IN3
SRT
MARGIN
RESET
WDI
RST
μP
I/O
MAX16061A
V
IN4
V
IN5
IN4
IN5
OUT1
OUT2
OUT3
Note:
The “_” is a placeholder for the input voltage threshold.
See Table 1. The MAX16060/MAX16061/MAX16062 are avail-
able in factory-preset thresholds/configuration combinations.
Choose the desired combination and complete part number
from Table 1.
+Denotes
a lead-free package.
For tape-and-reel, add a “T” after the “+.” Tape-and-reel are
offered in 2.5k increments.
*EP
= Exposed pad.
V
IN6
IN6
OUT4
OUT5
OUT6
MR
GND
TOL
________________________________________________________________
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, Quad-/Hex-/Octal-Voltage
µP Supervisors
MAX16060/MAX16061/MAX16062
ABSOLUTE MAXIMUM RATINGS
V
CC
, OUT_, IN_,
RESET
to GND ..............................-0.3V to +6V
TOL,
MARGIN, MR,
SRT, WDI to GND ...........-0.3V to V
CC
+ 0.3
Input/Output Current (RESET,
MARGIN,
SRT,
MR,
TOL, OUT_, WDI).........................................±20mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin TQFN (derate 16.9mW/°C above +70°C) ......1349mW
20-Pin TQFN (derate 16.9mW/°C above +70°C) ......1355mW
24-Pin TQFN (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
IN_ (See Table 1)
3.3V threshold, TOL = GND
3.3V threshold, TOL = V
CC
Threshold Voltages (IN_ Falling)
V
TH
2.5V threshold, TOL = GND
2.5V threshold, TOL = V
CC
1.8V threshold, TOL = GND
1.8V threshold, TOL = V
CC
Adjustable Threshold
(IN_ Falling)
IN_ Hysteresis
IN_ Input Current
V
TH
V
TH
_
HYS
TOL = GND
TOL = V
CC
IN_ rising
Fixed thresholds
Adjustable thresholds
-100
3.069
2.904
2.325
2.200
1.674
1.584
0.390
0.369
3.102
2.937
2.350
2.225
1.692
1.602
0.394
0.373
0.5
3
16
+100
3.135
2.970
2.375
2.250
1.710
1.620
0.398
0.377
V
% V
TH
µA
nA
V
SYMBOL
V
CC
I
CC
V
UVLO
V
UVLO_HYS
(Note 2)
V
CC
= 3.3V, OUT_,
RESET
not asserted
V
CC
= 5V, OUT_,
RESET
not asserted
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, Quad-/Hex-/Octal-Voltage
µP Supervisors
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
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
IN_ to Reset Delay
RESET
Output-Voltage Low
t
RD
V
OL
IN_ falling
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 (OUT_ )
OUT_ Output-Voltage Low
OUT_ Output-Voltage High
IN_ to OUT_ Propagation Delay
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
Pulled up to V
CC
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
I
SRT
V
SRT
= 0V
460
1.173
140
2.43
200
3.09
0.206
50
600
1.235
100
20
0.3
0.3
0.3
V
V
V
µs
ns
ns
kΩ
V
740
1.293
µs
nA
V
mV
µs
280
3.92
ms
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
MAX16060/MAX16061/MAX16062
_______________________________________________________________________________________
3
1% Accurate, Quad-/Hex-/Octal-Voltage
µP Supervisors
MAX16060/MAX16061/MAX16062
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
WATCHDOG TIMER
WDI Input-Voltage Low
WDI Input-Voltage High
WDI Pulse Width
Watchdog Timeout Period
Watchdog Startup Period
Watchdog Input Current
DIGITAL LOGIC
TOL Input-Voltage Low
TOL Input-Voltage High
TOL Input Current
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 6)
0.7 x
V
CC
12
20
50
28
V
IL
V
IH
TOL = V
CC
0.7 x
V
CC
100
0.3 x
V
CC
0.3 x
V
CC
V
V
nA
V
V
kΩ
µs
V
WDI
= 0 to V
CC
(Note 5)
t
WDI
V
IL
V
IH
(Note 5)
0.7 x
V
CC
50
1.12
35
-1
1.60
54
2.40
72
+1
0.3 x
V
CC
V
V
ns
s
s
µA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Note 1:
Devices are tested at T
A
= +25°C and guaranteed by design for T
A
= T
MIN
to T
MAX
.
Note 2:
The outputs are guaranteed to remain asserted down to V
CC
= 1V.
Note 3:
Measured with WDI,
MARGIN,
and
MR
unconnected.
Note 4:
The minimum and maximum specifications for this parameter are guaranteed by using the worst case of the SRT ramp cur-
rent and SRT threshold specifications.
Note 5:
Guaranteed by design and not production tested.
Note 6:
Amount of time required for logic to lock/unlock outputs from margin testing.
4
_______________________________________________________________________________________
1% Accurate, Quad-/Hex-/Octal-Voltage
µP Supervisors
Typical Operating Characteristics
(V
CC
= 3.3V, T
A
= +25°C, unless otherwise noted.)
NORMALIZED THRESHOLD
vs. SUPPLY VOLTAGE
MAX16060/1/2 toc02
MAX16060/MAX16061/MAX16062
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX16060/1/2 toc01
SUPPLY CURRENT vs. TEMPERATURE
60
WDI, MARGIN, AND MR UNCONNECTED
55
SUPPLY CURRENT (μA)
50
45
40
V
CC
= 2.5V
35
30
V
CC
= 3.3V
V
CC
= 5V
1.0100
1.0075
NORMALIZED THRESHOLD
1.0050
1.0025
1.0000
0.9975
0.9950
0.9925
0.9900
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
1.5
2.0
WDI, MARGIN, AND MR UNCONNECTED
55
SUPPLY CURRENT (μA)
50
45
40
35
30
1.5
2.0
2.5 3.0 3.5 4.0 4.5
SUPPLY VOLTAGE (V)
5.0
5.5
2.5 3.0 3.5 4.0 4.5
SUPPLY VOLTAGE (V)
5.0
5.5
NORMALIZED THRESHOLD
vs. TEMPERATURE
MAX16060/1/2 toc04
OUTPUT VOLTAGE vs. SINK CURRENT
100
MAX16060/1/2 toc05
OUTPUT VOLTAGE vs. SOURCE CURRENT
MAX16060/1/2 toc06
1.001
1.000
NORMALIZED THRESHOLD
0.999
0.998
0.997
1000
800
V
CC
- V
OUT_
(mV)
75
V
OUT
_ (mV)
600
50
400
25
0.996
OUT_ LOW
0.995
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
0
0
1
2
3
4
5
6
SINK CURRENT (mA)
7
8
200
OUT_ HIGH
0
0
5
10
15
20
SOURCE CURRENT (μA)
25
30
MAXIMUM TRANSIENT DURATION
vs. INPUT OVERDRIVE
MAXIMUM TRANSIENT DURATION (μs)
OUTPUT GOES LOW
ABOVE THIS LINE
MAX16060/1/2 toc07
RESET TIMEOUT PERIOD
vs. TEMPERATURE
197
RESET TIMEOUT PERIOD (ms)
196
195
194
193
192
191
190
MAX16060/1/2 toc08
RESET TIMEOUT DELAY
MAX16060/1/2 toc09
600
500
400
300
200
100
0
1
10
100
198
SRT = V
CC
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
40ms/div
1000
INPUT OVERDRIVE (mV)
_______________________________________________________________________________________
5
MAX16060/1/2 toc03
60
IN1
5V/div
OUT1
2V/div
RESET
2V/div
单片机
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