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General Description
The MAX9117–MAX9120 nanopower comparators in
space-saving SC70 packages feature Beyond-the-
Rails™ inputs and are guaranteed to operate down to
+1.6V. The MAX9117/MAX9118 feature an on-board
1.252V ±1.75% reference and draw an ultra-low supply
current of only 600nA, while the MAX9119/MAX9120
(without reference) require just 350nA of supply current.
These features make the MAX9117–MAX9120 family of
comparators ideal for all 2-cell battery-monitoring/man-
agement applications.
The unique design of the output stage limits supply-cur-
rent surges while switching, virtually eliminating the sup-
ply glitches typical of many other comparators. This
design also minimizes overall power consumption under
dynamic conditions. The MAX9117/MAX9119 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 MAX9118/MAX9120
have an open-drain output stage that makes them suit-
able for mixed-voltage system design. All devices are
available in the ultra-small 5-pin SC70 package.
Applications
2-Cell Battery Monitoring/Management
Ultra-Low-Power Systems
Mobile Communications
Notebooks and PDAs
Threshold Detectors/Discriminators
Sensing at Ground or Supply Line
Telemetry and Remote Systems
Medical Instruments
Features
♦ Space-Saving SC70 Package (Half the Size of
SOT23)
♦ Ultra-Low Supply Current
350nA Per Comparator (MAX9119/MAX9120)
600nA Per Comparator with Reference
(MAX9117/MAX9118)
♦ Guaranteed to Operate Down to +1.6V
♦ Internal 1.252V ±1.75% Reference
(MAX9117/MAX9118)
♦ Input Voltage Range Extends 200mV
Beyond-the-Rails
♦ CMOS Push-Pull Output with ±5mA Drive
Capability (MAX9117/MAX9119)
♦ Open-Drain Output Versions Available
(MAX9118/MAX9120)
♦ Crowbar-Current-Free Switching
♦ Internal Hysteresis for Clean Switching
♦ No Phase Reversal for Overdriven Inputs
MAX9117–MAX9120
SC70, 1.6V, Nanopower, Beyond-the-Rails
Comparators With/Without Reference
________________________________________________________________ Maxim Integrated Products 1
V
EE
IN- (REF)
IN+
1
5
V
CC
OUT
MAX9117
MAX9118
MAX9119
MAX9120
SC70
TOP VIEW
2
3
4
( ) ARE FOR MAX9117/MAX9118.
IN- (REF)
N.C.
V
EE
1
8
N.C.
N.C.
MAX9117
MAX9120
SO
2
IN+
3
V
CC
7
OUT
6
4
5
Typical Application Circuit appears at end of data sheet.
Pin Configurations
Selector Guide
Ordering Information
Beyond-the-Rails is a trademark of Maxim Integrated Products, Inc.
19-1862; Rev 4; 1/07
PART
INTERNAL
REFERENCE
OUTPUT
TYPE
SUPPLY
CURRENT
(nA)
MAX9117 Yes Push-Pull 600
MAX9118 Yes Open-Drain 600
350Push-PullNoMAX9119
MAX9120 No Open-Drain 350
PART
PIN-
PACKAGE
TOP
MARK
PKG
CODE
MAX9117EXK-T 5 SC70-5
ABW
X5-1
MAX9117ESA+ 8 SO
—
S8-2
MAX9118EXK-T 5 SC70-5
ABX
X5-1
MAX9119EXK-T 5 SC70-5
ABY
X5-1
MAX9120EXK-T 5 SC70-5
ABZ
X5-1
MAX9120ESA+ 8 SO
—
S8-2
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Note: All devices specified for over -40°C to +85°C operating
temperature range.
+Denotes lead-free package.
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