MAX9025EBT+T-MAX9026EBT-MAX9027EBT-MAX9028EBT+-MAX9028EBT+T Fast Delivery |IC PHOENIX CO.,LIMITED

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MAX9025EBT+T-MAX9026EBT-MAX9027EBT-MAX9028EBT+-MAX9028EBT+T
UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference
General Description
The MAX9025/MAX9028 nanopower comparators in
space-saving chip-scale (UCSP™) packages feature
Beyond-the-Rails™ inputs and are guaranteed to oper-
ate down to +1.8V. The MAX9025/MAX9026 feature
an on-board 1.236V ±1% reference and draw an ultra-low supply current of only 1µA, while the MAX9027−
MAX9028 (without reference) require just 0.6µA of supply current. These features make the MAX9025−
MAX9028 family of comparators ideal for all 2-cell battery-
monitoring/management applications.
The unique design of the output stage limits supply-
current surges while switching, virtually eliminating the
supply glitches typical of many other comparators. This
design also minimizes overall power consumption under
dynamic conditions. The MAX9025/MAX9027 have a
push-pull output stage that sinks and sources current.
Large internal-output drivers allow rail-to-rail output swing
with loads up to 5mA. The MAX9026/MAX9028 have an
open-drain output stage that makes them suitable for
mixed-voltage system design. All devices are available in
the miniature 6-bump UCSP packages.
Refer to the MAX9117 data sheet for similar comparators
in 5-pin SC70 packages and the MAX9017 data sheet for
similar dual comparators in 8-pin SOT23 packages.
Applications●2-Cell Battery Monitoring/Management●Ultra-Low-Power Systems●Mobile Communications●Notebooks and PDAs●Sensing at Ground or Supply Line●Telemetry and Remote Systems●Medical Instruments
Features●Space-Saving UCSP Package (1mm x 1.52mm)●Ultra-Low Supply Current 0.6µA (MAX9027/MAX9028) 1µA with Reference (MAX9025/MAX9026) ●Guaranteed to Operate Down to +1.8V●Internal 1.236V ±1% Reference (MAX9025/
MAX9026)●Input Voltage Range Extends 200mV
Beyond-the-Rails ●CMOS Push-Pull Output with ±5mA Drive Capability
(MAX9025/MAX9027) ●Open-Drain Output Versions Available (MAX9026/
MAX9028) ●Crowbar-Current-Free Switching●Internal Hysteresis for Clean Switching●No Phase Reversal for Overdriven Inputs
Typical Application Circuit appears at end of data sheet.
+Denotes lead(Pb)-free/RoHS-compliant package.
T = Tape and reel.
Beyond-the-Rails and UCSP are trademarks of Maxim
Integrated Products, Inc.
PARTINTERNAL
REFERENCE
OUTPUT
TYPE
SUPPLY
CURRENT (µA)
MAX9025YesPush-Pull1.0
MAX9026YesOpen-Drain1.0
MAX9027NoPush-Pull0.6
MAX9028NoOpen-Drain0.6
PARTTEMP
RANGE
BUMP-
PACKAGE
TOP
MARK
MAX9025EBT+T-40°C to +85°C6 UCSPADB
MAX9026EBT+T-40°C to +85°C6 UCSPADC
MAX9027EBT+T-40°C to +85°C6 UCSPADD
MAX9028EBT+T-40°C to +85°C6 UCSPADE
TOP VIEW
(BUMPS ON BOTTOM)
UCSP
MAX9025–
MAX9028
VCCB
OUT
VEE
IN+
REF
(VEE)
IN-
( ) MAX9027/MAX9028 PINS
Selector Guide
Ordering Information
Pin Conigurations
MAX9025–MAX9028UCSP, 1.8V, Nanopower, Beyond-the-Rails
Comparators With/Without Reference
EVALUATION KIT AVAILABLE
Supply Voltage (VCC to VEE) ................................................+6V
Voltage Inputs (IN+, IN-, REF) ......(VEE - 0.3V) to (VCC + 0.3V)
Output Voltage
MAX9025/MAX9027 ................(VEE - 0.3V) to (VCC + 0.3V)
MAX9026/MAX9028 ...............................(VEE - 0.3V) to +6V
Current into Input Pins .......................................................20mA
Output Current ..................................................................±50mA
Output Short-Circuit Duration ................................................10s
Continuous Power Dissipation (TA = +70°C)
6-Bump UCSP (derate 3.9mW/°C above +70°C) ........308mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature Range ............................-65°C to +150°C
Bump Temperature (soldering) Reflow ............................+235°C
(VCC = +5V, VEE = 0V, VIN+ = VREF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
Absolute Maximum Ratings
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Supply Voltage RangeVCCInferred from the PSRR test1.85.5V
Supply CurrentICC
VCC = 1.8V0.81.5VCC = 5VTA = +25°C1.01.7
TA = TMIN to TMAX2.2
IN+ Voltage RangeVIN+Inferred from output swing testVEE -
VCC +
0.2V
Input Offset VoltageVOS(Note 2)TA = +25°C0.35mVTA = TMIN to TMAX10
Input-Referred HysteresisVHB(Note 3)4mV
Input Bias CurrentIBTA = +25°C0.151nA
TA = TMIN to TMAX2
Power-Supply Rejection RatioPSRRVCC = 1.8V to 5.5V0.11mV/V
Output Voltage Swing HighVCC -
VOH
MAX9025, VCC = 5V,
ISOURCE = 6mA
TA = +25°C250350TA = TMIN to TMAX450
MAX9025, VCC = 1.8V,
ISOURCE = 1mA
TA = +25°C56200
TA = TMIN to TMAX300
Output Voltage Swing LowVOL
VCC = 5V,
ISINK = 6mA
TA = +25°C250350
TA = TMIN to TMAX450
VCC = 1.8V,
ISINK = 1mA
TA = +25°C57200
TA = TMIN to TMAX300
Output Leakage CurrentILEAKMAX9026 only, VO = 5.5V0.0011µA
Output Short-Circuit CurrentISC
Sourcing, VO = VEEVCC = 5V35
VCC = 1.8V3
Sinking, VO = VCCVCC = 5V33
VCC = 1.8V3
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-MAX9025/MAX9026 (with REF)
MAX9025–MAX9028UCSP, 1.8V, Nanopower, Beyond-the-Rails
Comparators With/Without Reference
(VCC = +5V, VEE = 0V, VCM = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
(VCC = +5V, VEE = 0V, VIN+ = VREF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
High-to-Low Propagation
Delay (Note 4)tPD-VCC = 1.8V7µsVCC = 5V6
Low-to-High Propagation
Delay (Note 4)tPD+
MAX9025 onlyVCC = 1.8V11VCC = 5V28
MAX9026 only,
RPULLUP = 100kΩ
VCC = 1.8V12
VCC = 5V31
Rise TimetRISEMAX9025 only, CL = 15pF1.6µs
Fall TimetFALLCL = 15pF0.2µs
Power-Up TimetON1.2ms
Reference VoltageVREFTA = +25°C1.2241.2361.248VTA = TMIN to TMAX1.2051.267
Reference Voltage Temperature CoeficientTCREF40ppm/
Reference Output Voltage
NoiseENCREF = 1nFBW = 10Hz to 100kHz29µVRMSBW = 10Hz to 6kHz60
Reference Line RegulationDVREF/ DVCCVCC = 1.8V to 5.5V0.5mV/V
Reference Load RegulationDVREF/ DIOUTDIOUT = 0nA to 100nA0.03mV/
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Supply Voltage RangeVCCInferred from the PSRR test1.85.5V
Supply CurrentICC
VCC = 1.8V0.450.75VCC = 5VTA = +25°C0.61.0
TA = TMIN to TMAX1.25
Input Common-Mode
Voltage RangeVCMInferred from the CMRR testVEE -
VCC +
0.2V
Input Offset VoltageVOS-0.2V ≤ VCM ≤
(VCC + 0.2V)
(Note 2)
TA = +25°C0.35TA = TMIN to TMAX10
Input-Referred HysteresisVHB-0.2V ≤ VCM ≤ (VCC + 0.2V) (Note 3)4mV
Input Bias CurrentIB
TA = +25°C0.151TA = TMIN to TMAX2
Power-Supply Rejection RatioPSRRVCC = 1.8V to 5.5V0.11mV/V
Electrical Characteristics-MAX9025/MAX9026 (with REF) (continued)
Electrical Characteristics-MAX9027/MAX9028 (without REF)
MAX9025–MAX9028UCSP, 1.8V, Nanopower, Beyond-the-Rails
Comparators With/Without Reference
(VCC = +5V, VEE = 0V, VCM = 0V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
Note 1: All specifications are 100% tested at TA = +25°C. Specification limits over temperature (TA = TMIN to TMAX) are guaran-
teed by design, not production tested.
Note 2: VOS is defined as the center of the hysteresis band at the input.
Note 3: The hysteresis-related trip points are defined as the edges of the hysteresis band, measured with respect to the center of
the band (i.e., VOS) (Figure 2).
Note 4: Specified with an input overdrive (VOVERDRIVE) of 100mV, and load capacitance of CL = 15pF. VOVERDRIVE is defined
above and beyond the offset voltage and hysteresis of the comparator input. For the MAX9025/MAX9026, reference volt-
age error should also be added.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Output Voltage Swing HighVCC - VOH
MAX9027 only, VCC =
5V, ISOURCE = 5mA
TA = +25°C191400
TA = TMIN to TMAX500
MAX9028 only, VCC =
1.8V, ISOURCE = 1mA
TA = +25°C58200
TA = TMIN to TMAX300
Output Voltage Swing LowVOL
VCC = 5V,
ISINK = 5mA
TA = +25°C191400TA = TMIN to TMAX500
VCC = 1.8V,
ISINK = 1mA
TA = +25°C56200
TA = TMIN to TMAX300
Output Leakage CurrentILEAKMAX9028 only, VO = 5.5V0.0011µA
Output Short-Circuit CurrentISC
Sourcing, VO = VEEVCC = 5V35VCC = 1.8V3
Sourcing, VO = VCC
VCC = 5V33
VCC = 1.8V3
High-to-Low Propagation Delay
(Note 4)tPD-VCC = 1.8V16µs
VCC = 5V14
Low-to-High Propagation Delay
(Note 4)tPD+
MAX9027 onlyVCC = 1.8V15
VCC = 5V40
MAX9028 only
VCC = 1.8V,
RPULLUP = 100kΩ16
VCC = 5V,
RPULLUP = 100kΩ45
Rise TimetRISEMAX9027 only, CL = 15pF1.6µs
Fall TimetFALLCL = 15pF0.2µs
Power-Up TimetON1.2ms
Electrical Characteristics-MAX9027/MAX9028 (without REF) (continued)
MAX9025–MAX9028UCSP, 1.8V, Nanopower, Beyond-the-Rails
Comparators With/Without Reference
(VCC = +5V, VEE = 0V, CL = 15pF, VOVERDRIVE = 100mV, TA = +25°C, unless otherwise noted.)
MAX9025/MAX9026
SUPPLY CURRENT vs. SUPPLY VOLTAGE
MAX9025-28 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (nA)
TA = +85ºC
TA = +25ºC
TA = -40ºC
MAX9025-28 toc02
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (nA)
MAX9027/MAX9028
SUPPLY CURRENT vs. SUPPLY VOLTAGE
TA = +85°C
TA = +25°C
TA = -40°C
MAX9025-28 toc03
TEMPERATURE (ºC)
SUPPLY CURRENT (nA)3510-15
MAX9025/MAX9026
SUPPLY CURRENT vs. TEMPERATURE
VCC = 5V
VCC = 1.8V
VCC = 3V
MAX9025-28 toc04
TEMPERATURE (ºC)
SUPPLY CURRENT (nA)3510-15
VCC = 5V
VCC = 3V
MAX9027/MAX9028
SUPPLY CURRENT vs. TEMPERATURE
VCC = 1.8V
MAX9025-28 toc05
TRANSITION FREQUENCY (kHz)
SUPPLY CURRENT (1
MAX9025/MAX9026
SUPPLY CURRENT vs. OUTPUT
TRANSITION FREQUENCY
VCC = 5V
VCC = 3V
VCC = 1.8V
MAX9025-28 toc06
TRANSITION FREQUENCY (kHz)
SUPPLY CURRENT (1
MAX9027/MAX9028
SUPPLY CURRENT vs. OUTPUT
TRANSITION FREQUENCY
VCC = 5V
VCC = 3V
VCC = 1.8V
OUTPUT VOLTAGE LOW
vs. SINK CURRENT
MAX9025-28 toc07
OUTPUT VOLTAGE LOW (mV)642
VCC = 5V
VCC = 3V
VCC = 1.8V
OUTPUT VOLTAGE LOW
vs. SINK CURRENT
MAX9025-28 toc08
OUTPUT VOLTAGE LOW (mV)642
TA = +85°C
TA = +25°C
TA = -40°C
MAX9025/MAX9027
OUTPUT VOLTAGE HIGH vs. SOURCE CURRENT
MAX9025-28 toc09
OUTPUT VOLTAGE HIGH (V
- V
, mV)642
VCC = 5V
VCC = 3VVCC = 1.8V
Typical Operating Characteristics
MAX9025–MAX9028UCSP, 1.8V, Nanopower, Beyond-the-Rails
Comparators With/Without Reference
(VCC = +5V, VEE = 0V, CL = 15pF, VOVERDRIVE = 100mV, TA = +25°C, unless otherwise noted.)
MAX9025/MAX9027
OUTPUT VOLTAGE HIGH vs. SOURCE CURRENT
MAX9025-28 toc10
SOURCE CURRENT (mA)
OUTPUT VOLTAGE HIGH (V
- V
, mV)642
TA = +85°C
TA = +25°C
TA = -40°C
SHORT-CIRCUIT SINK
CURRENT vs. TEMPERATURE
MAX9025-28 toc11
TEMPERATURE (ºC)
SHORT-CIRCUIT SINK CURRENT (mA)3510-15
VCC = 5V
VCC = 3V
VCC = 1.8V
VOUT = VCC
MAX9025/MAX9027 SHORT-CIRCUIT SOURCE
CURRENT vs. TEMPERATURE
MAX9025-28 toc12
TEMPERATURE (ºC)
SHORT-CIRCUIT SINK CURRENT (mA)3510-15
VCC = 5V
VCC = 3V
VCC = 1.8V
VOUT = VEE
OFFSET VOLTAGE
vs. TEMPERATURE
MAX9025-28 toc13
TEMPERATURE (ºC)
OFFSET VOLTAGE (mV)3510-15
VCC = 5V
VCC = 3VVCC = 1.8V
HYSTERESIS VOLTAGE
vs. TEMPERATURE
MAX9025-28 toc14
TEMPERATURE (ºC)
HYSTERESIS VOLTAGE (mV)3510-15
VCC = 5V
VCC = 3VVCC = 1.8V
INPUT BIAS CURRENT
vs. INPUT BIAS VOLTAGE
MAX9025-28 toc15
INPUT BIAS VOLTAGE (IN-) (V)
INPUT BIAS CURRENT (IN-) (nA)
IN+ = 2.5V
MAX9025/MAX9026
REFERENCE VOLTAGE vs. TEMPERATURE
MAX9025-28 toc16
REFERENCE VOLTAGE (V)
VCC = 5V
VCC = 3V
VCC = 1.8V
MAX9025/MAX9026
REFERENCE VOLTAGE vs. TEMPERATURE
MAX9025-28 toc17
REFERENCE VOLTAGE (V)
5 DEVICES
MAX9025/MAX9026
REFERENCE VOLTAGE
vs. SUPPLY VOLTAGE
MAX9025-28 toc18
REFERENCE VOLTAGE (V)
Typical Operating Characteristics (continued)
MAX9025–MAX9028UCSP, 1.8V, Nanopower, Beyond-the-Rails
Comparators With/Without Reference
(VCC = +5V, VEE = 0V, CL = 15pF, VOVERDRIVE = 100mV, TA = +25°C, unless otherwise noted.)
MAX9025/MAX9026
REFERENCE VOLTAGE
vs. REFERENCE CURRENT
MAX9025-28 toc19
REFERENCE CURRENT (nA)
REFERENCE VOLTAGE (V)0-50
VCC = 5V
VCC = 3V
VCC = 1.8V
PROPAGATION DELAY (tPD-)
vs. TEMPERATURE
MAX9025-28 toc20
TEMPERATURE (°C)
tPD-3510-15
VCC = 5V
VCC = 3V
VCC = 1.8V
MAX9025/MAX9027
PROPAGATION DELAY (tPD+)
vs. TEMPERATURE
MAX9025-28 toc21
TEMPERATURE (ºC)
tPD+3510-15
VCC = 5V
VCC = 3V
VCC = 1.8V
PROPAGATION DELAY (tPD-)
vs. CAPACITIVE LOAD
MAX9025-28 toc22
CAPACITIVE LOAD (nF)
tPD-
VCC = 5V
VCC = 3V
VCC = 1.8V
MAX9025/MAX9027
PROPAGATION DELAY (tPD+)
vs. CAPACITIVE LOAD
MAX9025-28 toc23
CAPACITIVE LOAD (nF)
tPD+
VCC = 5VVCC = 3V
VCC = 1.8V1020304050
PROPAGATION DELAY (tPD-)
vs. INPUT OVERDRIVE
MAX9025-28 toc24
INPUT OVERDRIVE (mV)
tPD-
VCC = 5V
VCC = 3V
VCC = 1.8V
MAX9025/MAX9027
PROPAGATION DELAY (tPD+)
vs. INPUT OVERDRIVE
MAX9025-28 toc25
tPD+
VCC = 5V
VCC = 3V
VCC = 1.8V
MAX9026/MAX9028
PROPAGATION DELAY (tPD+)
vs. PULLUP RESISTANCE
MAX9025-28 toc26
tPD+
VCC = 5V
VCC = 3V
VCC = 1.8V
PROPAGATION DELAY (VCC = 5V)
+100mV
MAX9025 toc27
-100mV
OUT
2V/div
IN+
Typical Operating Characteristics (continued)
MAX9025–MAX9028UCSP, 1.8V, Nanopower, Beyond-the-Rails
Comparators With/Without Reference

Partno	Mfg	Dc	Qty	Available	Descript
MAX9025EBT+T	MAXIM	N/a	2500	avai	UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference
MAX9026EBT	MAXIM	N/a	12474	avai	UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference
MAX9027EBT	MAXIM	N/a	1607	avai	UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference
MAX9028EBT+ \|MAX9028EBT	MAXIM	N/a	360	avai	UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference
MAX9028EBT+T	MAXIM	N/a	50000	avai	UCSP, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference