19-5986; Rev 1; 12/11
EVALUATION KIT AVAILABLE
MAX44269
1.3mm x 1.3mm, Low-Power
Dual Comparator
General Description
The MAX44269 is an ultra-small and low-power dual
comparator ideal for battery-powered applications such
as cell phones, notebooks, and portable medical devices
that have extremely aggressive board space and power
constraints. The comparator is available in a miniature
1.3mm x 1.3mm, 9-bump WLP package, making it the
industry’s smallest dual comparator.
The IC can be powered from supply rails as low as 1.8V
and up to 5.5V. It requires just 0.5µA of typical supply
current per comparator. It has a rail-to-rail input struc-
ture and a unique output stage that limits supply current
surges while switching. This design also minimizes over-
all power consumption under dynamic conditions. The
IC has open-drain outputs, making it suitable for mixed
voltage systems. The IC also features internal filtering to
provide high RF immunity. It operates over a -40°C to
+85°C temperature.
S
Ultra-Low Power Consumption
0.5µA per Comparator
S
Ultra-Small 1.3mm x 1.3mm WLP Package
S
Guaranteed Operation Down to V
CC
= 1.8V
S
Input Common-Mode Voltage Range Extends
200mV Beyond-the-Rails
S
6V Tolerant Inputs Independent of Supply
S
Open-Drain Outputs
S
Internal Filters Enhance RF Immunity
S
Crowbar-Current-Free Switching
S
Internal Hysteresis for Clean Switching
S
No Output Phase Reversal for Overdriven Inputs
Features
Applications
Smartphones
Notebooks
Two-Cell Battery-Powered Devices
Battery-Operated Sensors
Ultra-Low-Power Systems
Portable Medical Mobile Accessories
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/MAX44269.related.
Typical Application Circuit
V
CC
V
CC
V
PULL
MAX44269
V
CC
OUT1
V
REF
V
PULL
V
CC
REMOTE KEY
CONNECTOR
OUT2
GND
ACCESSORY ID
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
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.
MAX44269
1.3mm x 1.3mm, Low-Power
Dual Comparator
ABSOLUTE MAXIMUM RATINGS
V
CC
to GND.............................................................-0.3V to +6V
INA+, INA-, INB+, INB- to GND ..............................-0.3V to +6V
Continuous Input Current into Any Pin ............................
Q20mA
Maximum Power Dissipation
(derate 11.9mW/NC at T
A
= +70NC) ............................952mW
Output Voltage to GND (OUT_) ..............................-0.3V to +6V
Output Current (OUT_) ....................................................
Q50mA
Output Short-Circuit Duration (OUT_) .......................Continuous
Operating Temperature Range .......................... -40NC to +85NC
Storage Temperature Range............................ -65NC to +150NC
Junction Temperature .....................................................+150NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
PACKAGE THERMAL CHARACTERISTICS (Note 1)
WLP
Junction-to-Ambient Thermal Resistance (q
JA
) ..........84°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.
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.
ELECTRICAL CHARACTERISTICS
(V
CC
= 5V, V
GND
= 0V, V
IN-
= V
IN+
= 1.2V, R
PULLUP
= 100kI to V
CC
, T
A
= -40NC to +85NC. Typical values are at T
A
= +25NC, unless
otherwise noted.) (Note 2)
PARAMETER
DC CHARACTERISTICS
Input-Referred Hysteresis
Input Offset Voltage
Input Bias Current
V
HYS
V
OS
I
B
(V
GND
- 0.2V)
P
V
CM
P
(V
CC
+ 0.2V) (Note 3)
V
GND
- 0.2V
P
V
CM
P
V
CC
+ 0.2V (Note 4)
T
A
= +25NC
T
A
= -40NC to +85NC
V
CC
= 1.8V,
I
SINK
= 1mA
V
CC
= 5V, I
SINK
= 6mA
Input Voltage Range
Output Short-Circuit
Current
Output Leakage Current
V
CM
I
SC
I
LEAK
Inferred from V
OS
test
Sinking, V
OUT
= V
CC
V
CC
= 5.5V, V
OUT
= 5.5V
V
CC
= 1.8V
V
CC
= 5V
T
A
= +25NC
-40NC
P
T
A
P
+85NC
T
A
= +25NC
-40NC
P
T
A
P
+85NC
V
GND
- 0.2V
3
30
0.2
285
T
A
= +25NC
-40NC
P
T
A
P
+85NC
0.15
0.2
105
200
300
350
450
V
CC
+ 0.2V
V
mA
nA
mV
4
0.15
6
5
10
mV
mV
nA
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Output-Voltage Swing Low
V
OL
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
Maxim Integrated Products
2
MAX44269
1.3mm x 1.3mm, Low-Power
Dual Comparator
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= 5V, V
GND
= 0V, V
IN-
= V
IN+
= 1.2V, R
PULLUP
= 100kI to V
CC
, T
A
= -40NC to +85NC. Typical values are at T
A
= +25NC, unless
otherwise noted.) (Note 2)
PARAMETER
AC CHARACTERISTICS
Input overdrive =
Q100mV,
V
CC
= 5V
Propagation Delay High to
Low (Note 5)
t
PHL
Input overdrive =
Q100mV,
V
CC
= 1.8V
Input overdrive =
Q20mV,
V
CC
= 5V
Input overdrive =
Q20mV,
V
CC
= 1.8V
Input overdrive =
Q100mV,
V
CC
= 5V
Propagation Delay Low to
High (Note 5)
Fall Time
POWER SUPPLY
Supply Voltage Range
Power-Supply Rejection
Ratio
Supply Current per
Comparator
Power-Up Time
Note
Note
Note
Note
2:
3:
4:
5:
V
CC
PSRR
Guaranteed from PSRR tests
V
CC
= 1.8V to 5.5V
V
CC
= 1.8V, T
A
= +25NC
I
CC
t
ON
V
CC
= 5V, T
A
= +25NC
V
CC
= 5V, -40NC
P
T
A
P
+85NC
1
1.8
60
80
0.4
0.5
0.75
0.85
1
ms
FA
5.5
V
dB
t
PLH
t
F
Input overdrive =
Q100mV,
V
CC
= 1.8V
Input overdrive =
Q20mV,
V
CC
= 5V
Input overdrive =
Q20mV,
V
CC
= 1.8V
C
LOAD
= 15pF
5
7
8
12
34
12
35
12
0.2
Fs
Fs
Fs
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
All devices are 100% production tested at T
A
= +25NC. Temperature limits are guaranteed by design.
Hysteresis is the input voltage difference between the two switching points.
V
OS
is the average of the positive and negative trip points minus V
REF
.
Overdrive is defined as the voltage above or below the switching points.
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
Maxim Integrated Products
3
MAX44269
1.3mm x 1.3mm, Low-Power
Dual Comparator
Typical Operating Characteristics
(V
CC
= 5V, V
GND
= 0V, V
IN-
= V
IN+
= 1.2V, R
PULLUP
= 100kΩ to V
CC
, T
A
= -40NC to +85NC. Typical values are at T
A
= +25NC, unless
otherwise noted. All devices are 100% production tested at T
A
= +25NC. Temperature limits are guaranteed by design.)
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX44269 toc01
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX44269 toc02
SUPPLY CURRENT vs. TRANSITION
FREQUENCY (V
OVERDRIVE
= 20mV)
12
SUPPLY CURRENT (µA)
10
8
6
MAX44269 toc03
1.2
1.4
1.2
SUPPLY CURRENT (µA)
1.0
0.8
0.6
0.4
0.2
14
T
A
= +85°C
1.0
SUPPLY CURRENT (µA)
0.8
0.6
T
A
= +85°C
V
CC
= 5V
V
CC
= 2.7V
T
A
= +25°C
0.4
0.2
0
T
A
= -40°C
T
A
= +25°C
T
A
= -40°C
4
2
V
CC
= 1.8V
V
OUT
= HIGH
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
SUPPLY VOLTAGE (V)
0
V
OUT
= LOW
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0
SUPPLY VOLTAGE (V)
0
1
10
100
1k
10k
INPUT FREQUENCY (Hz)
INPUT OFFSET VOLTAGE
vs. TEMPERATURE
MAX44269 toc04
INPUT BIAS CURRENT
vs. TEMPERATURE
MAX44269 toc05
INPUT BIAS CURRENT
vs. COMMON-MODE VOLTAGE
450
INPUT BIAS CURRENT (nA)
400
350
300
250
200
150
100
50
0
MAX44269 toc06
0
-0.05
INPUT OFFSET VOLTAGE (mV)
-0.10
-0.15
-0.20
-0.25
-0.30
-0.35
-0.40
-0.45
-0.50
-40
-20
0
20
40
60
80
0.20
0.18
INPUT BIAS CURRENT (nA)
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
0
500
V
DD
= 5V
V
DD
= 5V
V
DD
= 1.8V
V
DD
= 2.7V
V
DD
= 5V
V
DD
= 0V
V
DD
= 2.7V
V
DD
= 1.8V
V
DD
= 2.7V
V
DD
= 1.8V
100
-40
-20
0
20
40
60
80
100
-1
0
1
2
3
4
5
6
TEMPERATURE (°C)
TEMPERATURE (°C)
INPUT COMMON-MODE VOLTAGE (V)
OUTPUT-VOLTAGE LOW
vs. PULLUP RESISTANCE
MAX44269 toc07
SHORT-CIRCUIT CURRENT
vs. SUPPLY VOLTAGE
MAX44269 toc08
INPUT OFFSET VOLTAGE HISTOGRAM
40
35
OCCURRENCE (%)
30
25
20
15
10
5
0
MAX44269 toc09
10,000
OUTPUT VOLTAGE LOW (V
OL
- V
EE
)
40
35
SHORT-CIRCUIT CURRENT (mA)
30
25
20
15
10
5
45
V
OUT
= LOW
1000
T
A
= -40°C
100
T
A
= +25°C
10
T
A
= +85°C
1
100
1k
10k
100k
PULLUP RESISTANCE (
I
)
0
0
1
2
3
4
5
6
SUPPLY VOLTAGE (V)
-2 -1.5 -1.0 -0.5 0
0.5 1.0 1.5 2.0 2.5
INPUT OFFSET VOLTAGE (mV)
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
Maxim Integrated Products
4
MAX44269
1.3mm x 1.3mm, Low-Power
Dual Comparator
Typical Operating Characteristics (continued)
(V
CC
= 5V, V
GND
= 0V, V
IN-
= V
IN+
= 1.2V, R
PULLUP
= 100kΩ to V
CC
, T
A
= -40NC to +85NC. Typical values are at T
A
= +25NC, unless
otherwise noted. All devices are 100% production tested at T
A
= +25NC. Temperature limits are guaranteed by design.)
LEAKAGE CURRENT vs. TEMPERATURE
MAX44269 toc10
PROPAGATION DELAY
vs. PULLUP RESISTANCE
MAX44269 toc11
PROPAGATION DELAY
vs. CAPACITIVE LOAD
90
PROPAGATION DELAY (µs)
80
70
60
50
40
30
20
10
0
MAX44269 toc12
0.50
0.45
OUTPUT LEAKAGE CURRENT (nA)
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
-50
-30
-10
10
30
50
70
90
120
100
PROPAGATION DELAY (µs)
80
t
PLH
60
40
20
t
PHL
100
t
PLH
V
CC
= 5V
V
CC
= 2.7V
t
PHL
V
CC
= 1.8V
0
110
1k
10k
100k
1M
10M
TEMPERATURE (°C)
PULLUP RESISTANCE (I)
0
200
400
600
800
1000
CAPACITIVE LOAD (pF)
PROPAGATION DELAY vs. TEMPERATURE
(V
OVERDRIVE
= 100mV, V
DD
= 5V)
40
PROPAGATION DELAY (µs)
35
30
25
20
15
10
5
0
-40
-20
0
20
40
60
80
100
TEMPERATURE (°C)
MAX44269 toc13
PROPAGATION DELAY
vs. INPUT OVERDRIVE (t
PLH
)
MAX44269 toc14
PROPAGATION DELAY
vs. INPUT OVERDRIVE (t
PHL
)
MAX44269 toc15
45
60
50
PROPAGATION DELAY (µs)
40
30
20
10
0
0
200
400
600
800
12
10
PROPAGATION DELAY (µs)
8
6
4
2
0
T
A
= -40°C
T
A
= +25°C
t
PLH
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
t
PHL
T
A
= +85°C
0
200
400
600
800
1000
1000
INPUT OVERDRIVE VOLTAGE (mV)
INPUT OVERDRIVE VOLTAGE (mV)
INPUT REFERRED HYSTERESIS
vs. TEMPERATURE
MAX44269 toc16
4.5
INPUT REFERRED HYSTERESIS (mV)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
-40
-20
0
20
40
60
80
SMALL-SIGNAL TRANSIENT RESPONSE
(V
CC
= 1.8V)
MAX44269 toc17
SMALL-SIGNAL TRANSIENT RESPONSE
(V
CC
= 5V)
V
IN+
20mV/div
MAX44269 toc18
V
IN+
20mV/div
V
OUT
1V/div
V
OUT
2V/div
100
20µs/div
20µs/div
TEMPERATURE (°C)
½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½½
Maxim Integrated Products
5
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