General Description
The MAX9065 is an ultra-small, low-power, window com-
parator ideal for a wide variety of portable electronics
applications such as cell phones, portable media players,
and notebooks that have extremely tight board space and
power constraints. It comes in both a 4-bump UCSP™
package with a 1mm x 1mm footprint (as small as two
0402 resistors) and a 5-pin SOT23 package.
The MAX9065 features a common-mode input range of
-0.3V to +5.5V independent of supply voltage. The input
current goes to zero when the MAX9065 is powered down
(VCC = 0). Additionally, the MAX9065 features high RF
immunity.
The MAX9065 has a push-pull output and consumes only
1μA (max) supply current. The MAX9065 operates down to
1.0V over the extended -40°C to +85°C temperature range.
Applications
●Cell Phones
●Portable Media Players
●Electronic Toys
●Notebook Computers
●Portable Medical Devices
Features
●Tiny 1mm x 1mm 4-Bump UCSP
• Footprint = Two 0402 Resistors
• Also Available in 5-Pin SOT23 Package
●Ultra-Low Power Operating Current
• 1μA (max)
●-0.3V to +5.5V Input Voltage Range
● 1.0V to 5.5V VCC Range
● 3.0V and 4.2V Trigger Points
● -40°C to +85°C Extended Temperature Range
19-4224; Rev 4; 3/17
UCSP is a trademark of Maxim Integrated Products, Inc.
Note: All devices are specified over the extended -40°C to
+85°C operating temperature range.
+Denotes a lead-free/RoHS-compliant package.
G45 = Protective die coating.
Pin Congurations Typical Operating Circuit
Ordering Information
PART PIN-PACKAGE TOP MARK
MAX9065EBS+G45 4 UCSP AGC
MAX9065EUK+ 5 SOT23 AFFL
MAX9065AEWS+TCNB 4 WLP AGO
GND
INGND
1 5 OUTVCC
MAX9065
SOT23
TOP VIEW
2
3 4
OUT
VCC
UCSP
TOP VIEW
(BUMPS ON BOTTOM)
A1 A2
B1 B2
IN
GND
MAX9065 +
IN
1.0V TO 5.5V
MICRO
CONTROLLER
N
VCC
VLOWER
VUPPER
OUT
VCC
GND
0.1µF
I/O
VDD
MAX9065
0.2V
REF +
MAX9065 Ultra-Small, nanoPower, Window Comparator
in 4 UCSP and 5 SOT23
EVALUATION KIT AVAILABLE
VCC, IN to GND ....................................................... -0.3V to +6V
OUT to GND ............................................. -0.3V to (VCC + 0.3V)
Output Short-Circuit Current Duration ................................... 10s
Input Current into Any Terminal ........................................ ±20mA
Continuous Power Dissipation
4-Bump UCSP (derate 3.0mW/°C above +70°C) ........238mW
5-Pin SOT23 (derate 3.9mW/°C above +70°C) ..........312mW
4-Bump WLP (derate 3mW/ºC above +70ºC) .............915mW
Operating Temperature Range ........................... -40°C to +85°C
Junction Temperature ...................................................... +150°C
Storage Temperature Range ............................ -65°C to +150°C
Lead Temperature (SOT23 only, soldering 10s) .............+300°C
Soldering Temperature (reflow) ....................................... +260°C
(VCC = 3.3V, TA = -40°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1)
Absolute Maximum Ratings
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
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DC CHARACTERISTICS
Upper Threshold Voltage UTV
MAX9065EBS+
4 UCSP
TA = +25°C 4.158 4.20 4.242
V
-40°C < TA < +85°C 4.10 4.30
MAX9065EUK+
5 SOT23
TA = +25°C 4.04 4.20 4.36
-40°C < TA < +85°C 3.98 4.42
MAX9065AEBS+
4 UCSP
TA = +25°C 1.152 1.20 1.248
-40°C < TA < +85°C 1.132 1.268
Lower Threshold Voltage LTV
MAX9065EBS+
4 UCSP
TA = +25°C 2.94 3.00 3.06
V
-40°C < TA < +85°C 2.92 3.08
MAX9065EUK+
5 SOT23
TA = +25°C 2.88 3.00 3.12
-40°C < TA < +85°C 2.83 3.17
MAX9065AEBS+
4 UCSP
TA = +25°C 0.576 0.60 0.624
-40°C < TA < +85°C 0.566 0.634
Input Voltage Range VIN -0.3 +5.5 V
Hysteresis VHYS (Note 2) ±1.0 %
Resistor String Input Resistance RIN 5.8 11 17.7 MΩ
Input Shutdown Current IIN_SHDN VCC = 0V, VIN = 5.5V 1 15 nA
Output Voltage Low VOL
ISINK = 100µA, VCC = 1V, TA = +25°C 0.2
VISINK = 1.2mA, VCC = 3.3V 0.3
ISINK = 1.2mA, VCC = 5.5V 0.5
Output Voltage High VOH
ISOURCE = 25µA, VCC = 1V, TA = +25°C VCC - 0.2
VISOURCE = 0.3mA, VCC = 3.3V VCC - 0.3
ISOURCE = 0.75mA, VCC = 5.5V VCC - 0.5
AC CHARACTERISTICS
Propagation Delay tPD Overdrive = ±100mV (Notes 3, 4) 25 µs
Fall Time tFCL = 10pF 14 ns
Rise Time tRCL = 10pF 30 ns
MAX9065 Ultra-Small, nanoPower, Window Comparator
in 4 UCSP and 5 SOT23
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(VCC = 3.3V, TA = -40°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.) (Note 1)
Note 1: All devices are 100% production tested at TA = +25°C. Temperature limits are guaranteed by design.
Note 2: Hysteresis is the input voltage difference between the two switching points.
Note 3: Overdrive is defined as the voltage above or below the average of the switching points.
Note 4: Guaranteed by ATE and/or bench characterization over temperature.
(VCC = 3.3V, TA = -40°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.)
Electrical Characteristics (continued)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
POWER SUPPLY
Supply Voltage VCC Guaranteed by VOS tests 1 5.5 V
Supply Current ICC
VCC = 5.5V 0.7 1.35 µA
VCC = 1.0V, TA = +25°C 0.6 1.0
Power-Supply Rejection Ratio PSRR VCC = 0.9V to 5.5V, TA = +25°C 40 53 dB
Power-Up Time tON 3 ms
Typical Operating Characteristics
0
400
200
800
600
1000
1200
0 2 31 4 5 6
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX9065 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (nA)
TA = +85°C
TA = +25°C
TA = -40°C
0
1.0
0.5
2.0
1.5
2.5
3.0
0 42 6 8
OUTPUT VOLTAGE HIGH
vs. SOURCE CURRENT
MAX9065 toc04
SOURCE CURRENT (mA)
OUTPUT VOLTAGE HIGH (V)
VCC = 5V
VCC = 3.3V
VCC = 1.8V
0
1.0
0.5
2.0
1.5
2.5
3.0
0 84 12 16 20
OUTPUT VOLTAGE LOW
vs. SINK CURRENT
MAX9065 toc03
SINK CURRENT (mA)
OUTPUT VOLTAGE LOW (V)
VCC = 5V
VCC = 3.3V
VCC = 1.8V
2.8
3.0
3.2
3.4
3.6
3.8
4.0
4.2
4.4
-40 -15 10 35 60 85
THRESHOLD VOLTAGE
vs. TEMPERATURE
MAX9065 toc06
TEMPERATURE (°C)
THRESHOLD VOLTAGE (V)
VTH = 4.2V
VTH = 3V
SUPPLY CURRENT
vs. OUTPUT TRANSITION FREQUENCY
MAX9065 toc02
OUTPUT TRANSITION FREQUENCY (kHz)
SUPPLY CURRENT (µA)
101
5
10
15
20
25
30
35
40
45
50
0
0.1 100
VCC = 5V
VCC = 3.3V
VCC = 1.8V
0
30
20
10
40
50
60
70
80
90
100
-40 10-15 35 60 85
HYSTERESIS VOLTAGE
vs. TEMPERATURE
MAX9065 toc05
TEMPERATURE (°C)
HYSTERESIS (mV)
VTH = 4.2V
VTH = 3V
MAX9065 Ultra-Small, nanoPower, Window Comparator
in 4 UCSP and 5 SOT23
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(VCC = 3.3V, TA = -40°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.)
Typical Operating Characteristics (continued)
2.4
2.8
2.6
3.2
3.0
3.6
3.4
3.8
4.2
4.0
4.4
1.0 2.0 2.5 3.01.5 3.5 4.0 4.5 5.55.0 6.0
THRESHOLD VOLTAGE
vs. SUPPLY VOLTAGE
MAX9065 toc07
SUPPLY VOLTAGE (V)
THRESHOLD VOLTAGE (V)
VTH = 4.2V
VTH = 3V
0
5
15
10
20
25
0 21 3 4 5 6
PROPAGATION DELAY
vs. SUPPLY VOLTAGE
MAX9065 toc10
SUPPLY VOLTAGE (V)
PROPAGATION DELAY (ms)
VTH = 4.2V
VTH = 3V
VOD = ±200mV
1ms/div
OUTPUT RESPONSE TO SUPPLY
VOLTAGE TRANSIENT
VCC
200mV/div
OUT
2V/div
OUT
2V/div
OUT
2V/div
MAX9065 toc13
VIN = VTH + 50mV
VIN = VTH + 150mV
VIN = VTH + 300mV
3.2V
3V
0V
0V
0V
7
11
9
17
15
13
23
21
19
25
-40 10-15 35 60 85
PROPAGATION DELAY
vs. TEMPERATURE
MAX9065 toc08
TEMPERATURE (°C)
PROPAGATION DELAY (µs)
VCC = 5V
VCC = 3.3V
VCC = 1.8V
0
50
100
150
200
250
0 80 10040 6020 120 140 160 180 200
PROPAGATION DELAY
vs. INPUT OVERDRIVE
MAX9065 toc09
INPUT OVERDRIVE (mV)
PROPAGATION DELAY (µs)
VCC = 1.8V
VCC = 3.3V
VCC = 5V
VTH = 4.2V
200µs/div
1kHz FREQUENCY RESPONSE
IN
200mV/div
OUT
2V/div
MAX9065 toc11
VCC = 3.3V
4.4V
4V
0V
1ms/div
POWER-UP/POWER-DOWN RESPONSE
VCC
2V/div
OUT
2V/div
MAX9065 toc14
VIN = 4.3V
VCC = 3.3V
0V
0V
20µs/div
IN
200mV/div
OUT
2V/div
MAX9065 toc12
VCC = 3.3V
4.4V
4V
0V
10kHz FREQUENCY RESPONSE
POWER-SUPPLY REJECTION
FOR NO FALSE TRIGGERING
MAX9065 toc15
FREQUENCY (Hz)
TRIP POINT (V)
100k10k1k100
4.08
4.10
4.12
4.14
4.16
4.18
4.20
4.22
4.24
4.26
4.28
4.30
4.32
4.34
4.06
10 1M
UPPER TRIP
POINT
LOWER TRIP
POINT
VCC = 3.3V + 100mVP-P
MAX9065 Ultra-Small, nanoPower, Window Comparator
in 4 UCSP and 5 SOT23
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Detailed Description
The MAX9065 is an extremely small window comparator
designed for compact, low-current applications, featuring
a supply current of less than 1μA (max).
MAX9065 Operation
At the heart of the MAX9065 are two comparators, a
resistor-divider with a disconnect switch, a 200mV refer-
ence, digital logic circuitry, and an output stage (see the
Typical Operating Circuit).
The digital logic circuitry and the output stage together
behave like an AND gate. The gate’s inputs are the out-
puts of the two comparators. When either comparator’s
output is low, the output asserts low. When both compara-
tor’s outputs are high, the output asserts high.
When power is applied to VCC, the n-channel FET at the
bottom of the resistor-divider is turned on. The resistor-
divider provides two voltages, VUPPER and VLOWER,
for comparison with an internal 0.2V reference voltage.
When the input voltage exceeds 4.2V, VUPPER is greater
than 0.2V, causing the output to assert low. When the
input voltage falls below 3.0V, VLOWER is less than 0.2V,
causing the output also to assert low. With the input volt-
age between 3.0V and 4.2V, the output asserts high, indi-
cating that the input voltage is within the desired range.
Table 1 summarizes the operation of the MAX9065.
When VCC goes to 0V, the n-channel FET is turned off,
eliminating the resistor-divider as a leakage path for current.
MAX9065A Operation
The resistor-divider provides two voltages, VUPPER and
VLOWER, for comparison with an internal 0.2V reference
voltage. When the input voltage exceeds 1.2V, VUPPER is
greater than 0.2V, causing the output to assert low.
When the input voltage falls below 0.6V, VLOWER is less
than 0.2V, causing the output also to assert low. With the
input voltage between 0.6V and 1.2V, the output asserts
high, indicating that the input voltage is within the desired
range. Table 2 summarizes the operation of the MAX9065A.
Applications
The MAX9065 is designed specifically to monitor the
voltage on a single lithium battery. Keeping the voltage
on a lithium battery within a tight range is important to
prevent damage to the battery. Specifically, ensuring that
the battery’s voltage neither exceeds 4.2V nor falls below
3.0V lengthens the lifetime of the battery and avoids any
hazardous battery conditions.
Hysteresis
There are four trip points for hysteresis. See Figure 1.
Power-Supply Considerations
Bypass VCC with a 0.1μF capacitor to ground.
Table 1. MAX9065 Operation
Table 2. MAX9065A Operation
Pin Description
PIN NAME FUNCTION
SOT23 UCSP
1 B1 VCC
External Supply Input.
Bypass to ground with a
0.1µF bypass capacitor.
2, 3 B2 GND Ground
4 A2 IN Window Comparator Input
5 A1 OUT Push-Pull Output
INPUT VOLTAGE OUTPUT
VIN > 4.2V Low
3.0V < VIN < 4.2V High
VIN < 3.0V Low
INPUT VOLTAGE OUTPUT
VIN > 1.2V Low
0.6V < VIN < 1.2V High
VIN < 0.6V Low
Chip Information
PROCESS: BiCMOS
MAX9065 Ultra-Small, nanoPower, Window Comparator
in 4 UCSP and 5 SOT23
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Figure 1. Hysteresis Trip Points
HYSTERESIS = 1%
UTV = 4.2V (MAX9065)
UTV = 1.2V (MAX9065A)
LTV = 3.0V (MAX9065)
LTV = 0.6V (MAX9065A)
HYSTERESIS = 1%
IN
OUT
MAX9065 Ultra-Small, nanoPower, Window Comparator
in 4 UCSP and 5 SOT23
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Package Information
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
PACKAGE TYPE PACKAGE CODE OUTLINE NO. LAND
PATTERN NO.
5 SOT23 U5+2 21-0057 90-0174
4 UCSP B4+1 21-0117 Refer to Application Note 1891
4 WLP W41E1+1 21-0885 90-0366
MAX9065 Ultra-Small, nanoPower, Window Comparator
in 4 UCSP and 5 SOT23
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Package Information (continued)
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
D1
E1/ e
b
SE
SD
0.05
M S
AB
A
B
E
D
Pin 1
Indicator
Marking
A3
A
A2 A1
0.05
S
S
SEE NOTE 7
SIDE VIEW
TOP VIEW
BOTTOM VIEW
A
1
0.64
0.24
0.40
0.040
0.31
0.50
0.50
0.50
0.25
0.25
A
1
AAAA
B
2
1.009
1.009
FRONT VIEW
TITLE
DOCUMENT CONTROL NO.
REV.
1
1
APPROVAL
COMMON DIMENSIONS
A
A2
A1
A3
b
E1
D1
e
SD
SE
0.05
0.03
0.03
BASIC
REF
BASIC
NOTES:
1. Terminal pitch is defined by terminal center to center value.
2. Outer dimension is defined by center lines between scribe lines.
3. All dimensions in millimeter.
4. Marking shown is for package orientation reference only.
5. Tolerance is ± 0.02 unless specified otherwise.
6. All dimensions apply to PbFree (+) package codes only.
7. Front - side finish can be either Black or Clear.
BASIC
BASIC
- DRAWING NOT TO SCALE -
C
BASIC
BASIC
maxim
integrated
TM
21-0885
PACKAGE OUTLINE 4 BUMPS
WLP PKG. 0.50mm PITCH,
W41E1+1
D
0.025
0.025
E
DEPOPULATED BUMPS:
NONE
MAX9065 Ultra-Small, nanoPower, Window Comparator
in 4 UCSP and 5 SOT23
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Package Information (continued)
For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”,
“#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing
pertains to the package regardless of RoHS status.
MAX9065 Ultra-Small, nanoPower, Window Comparator
in 4 UCSP and 5 SOT23
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Revision History
REVISION
NUMBER
REVISION
DATE DESCRIPTION PAGES
CHANGED
0 7/08 Initial release —
1 10/08 Removed future part reference from 5 SOT23 package 1
2 1/11 Added G45 designation 1
3 8/15 Corrected error in Typical Operating Circuit 1
4 3/17 Updated title to include “nanoPower” and updated package outline drawings 1–10
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specications without notice at any time. The parametric values (min and max limits)
shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
MAX9065 Ultra-Small, nanoPower, Window Comparator
in 4 UCSP and 5 SOT23
© 2017 Maxim Integrated Products, Inc.
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