Datasheet MAX917, MAX918, MAX919, MAX920 (Maxim)

19-1512; Rev 2; 10/10
SOT23, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference MAX917–MAX920 General Description Features
The MAX917–MAX920 nanopower comparators in ♦
Ultra-Low Supply Current
space-saving SOT23 packages feature Beyond-the-
380nA per Comparator (MAX919/MAX920)
Rails™ inputs and are guaranteed to operate down to
750nA per Comparator with Reference
+1.8V. The MAX917/MAX918 feature an on-board
(MAX917/MAX918)
1.245V ±1.5% reference and draw an ultra-low supply ♦
Guaranteed to Operate Down to +1.8V
current of only 750nA, while the MAX919/MAX920 (with- ♦
Internal 1.245V ±1.5% Reference
out reference) require just 380nA of supply current.
(MAX917/MAX918)
These features make the MAX917–MAX920 family of ♦
Input Voltage Range Extends 200mV
comparators ideal for all 2-cell battery applications,
Beyond-the-Rails
including monitoring/management. ♦
CMOS Push-Pull Output with ±8mA Drive
The unique design of the output stage limits supply-cur-
Capability (MAX917/MAX919)
rent surges while switching, virtually eliminating the ♦
Open-Drain Output Versions Available
supply glitches typical of many other comparators. This
(MAX918/MAX920)
design also minimizes overall power consumption ♦
Crowbar-Current-Free Switching
under dynamic conditions. The MAX917/MAX919 have a push-pull output stage that sinks and sources current. ♦
Internal Hysteresis for Clean Switching
Large internal output drivers allow rail-to-rail output ♦
No Phase Reversal for Overdriven Inputs
swing with loads up to 8mA. The MAX918/MAX920 ♦
Space-Saving SOT23 Package
have an open-drain output stage that makes them suit- able for mixed-voltage system design.
Ordering Information TOP PKG PART PIN-PACKAGE MARK Applications CODE
2-Cell Battery Monitoring/Management
MAX917
EUK+T 5 SOT23 ADIQ U5+1 MAX917ESA+ 8 SO — S8+2 Ultra-Low-Power Systems
MAX918
EUK+T 5 SOT23 ADIR U5+1 Mobile Communications MAX918ESA+ 8 SO — S8+2 Notebooks and PDAs
MAX919
EUK+T 5 SOT23 ADIS U5+1 Threshold Detectors/Discriminators MAX919EUK/V+T 5 SOT23 AFGP U5+1 Sensing at Ground or Supply Line MAX919ESA+ 8 SO — S8+2 Telemetry and Remote Systems
MAX920
EUK+T 5 SOT23 ADIT U5+1 Medical Instruments MAX920ESA+ 8 SO — S8+2
Note:
All devices are specified over the -40°C to +85°C operating temperature range. +Denotes a lead(Pb)-free/RoHS-compliant package.
Selector Guide
/V denotes an automotive qualified part.
Pin Configurations SUPPLY INTERNAL OUTPUT PART CURRENT REFERENCE TYPE
TOP VIEW
(nA)
MAX917 Yes Push-Pull 750 OUT 1 5 VCC MAX918 Yes Open-Drain 750 MAX919 No Push-Pull 380 MAX917 VEE 2 MAX918 MAX920 No Open-Drain 380 MAX919 MAX920
Typical Application Circuit appears at end of data sheet.
IN+ 3 4 IN- (REF)
SOT23
( ) ARE FOR MAX917/MAX918. Beyond-the-Rails is a trademark of Maxim Integrated Products, Inc. Pin Configurations continue at end of data sheet.
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