MAX917 Maxim, MAX917 Datasheet

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MAX917

Manufacturer Part Number
MAX917
Description
The MAX917–MAX920 nanopower comparators in space-saving SOT23 packages feature Beyond-the-Rails™ inputs and are guaranteed to operate down to +1
Manufacturer
Maxim
Datasheet

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The MAX917–MAX920 nanopower comparators in
space-saving SOT23 packages feature Beyond-the-
Rails™ inputs and are guaranteed to operate down to
+1.8V. The MAX917/MAX918 feature an on-board
1.245V ±1.5% reference and draw an ultra-low supply
current of only 750nA, while the MAX919/MAX920 (with-
out reference) require just 380nA of supply current.
These features make the MAX917–MAX920 family of
comparators ideal for all 2-cell battery applications,
including monitoring/management.
The unique design of the output stage limits supply-cur-
rent surges while switching, virtually eliminating the
supply glitches typical of many other comparators. This
design also minimizes overall power consumption
under dynamic conditions. The MAX917/MAX919 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 8mA. The MAX918/MAX920
have an open-drain output stage that makes them suit-
able for mixed-voltage system design.
Typical Application Circuit appears at end of data sheet.
19-1512; Rev 2; 10/10
Beyond-the-Rails is a trademark of Maxim Integrated Products, Inc.
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.
MAX917
MAX918
MAX919
MAX920
PART
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
SOT23, 1.8V, Nanopower, Beyond-the-Rails
REFERENCE
INTERNAL
Yes
Yes
No
No
________________________________________________________________ Maxim Integrated Products
General Description
Comparators With/Without Reference
Open-Drain
Open-Drain
Push-Pull
Push-Pull
OUTPUT
TYPE
Selector Guide
Applications
CURRENT
SUPPLY
(nA)
750
750
380
380
♦ Ultra-Low Supply Current
♦ Guaranteed to Operate Down to +1.8V
♦ Internal 1.245V ±1.5% Reference
♦ Input Voltage Range Extends 200mV
♦ CMOS Push-Pull Output with ±8mA Drive
♦ Open-Drain Output Versions Available
♦ Crowbar-Current-Free Switching
♦ Internal Hysteresis for Clean Switching
♦ No Phase Reversal for Overdriven Inputs
♦ Space-Saving SOT23 Package
Note: All devices are specified over the -40°C to +85°C operating
temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
/V denotes an automotive qualified part.
Pin Configurations continue at end of data sheet.
MAX917EUK+T
MAX917ESA+
MAX918EUK+T
MAX918ESA+
MAX919EUK+T
MAX919EUK/V+T
MAX919ESA+
MAX920EUK+T
MAX920ESA+
( ) ARE FOR MAX917/MAX918.
(MAX917/MAX918)
Beyond-the-Rails
Capability (MAX917/MAX919)
(MAX918/MAX920)
TOP VIEW
380nA per Comparator (MAX919/MAX920)
750nA per Comparator with Reference
PART
(MAX917/MAX918)
OUT
V
IN+
EE
PIN-PACKAGE
5 SOT23
8 SO
5 SOT23
8 SO
5 SOT23
5 SOT23
8 SO
5 SOT23
8 SO
1
2
3
Ordering Information
MAX917
MAX918
MAX919
MAX920
SOT23
Pin Configurations
5
4
V
IN- (REF)
MARK
AFGP
CC
ADIQ
ADIR
ADIS
TOP
ADIT
Features
CODE
U5+1
U5+1
U5+1
U5+1
U5+1
S8+2
S8+2
S8+2
S8+2
PKG
1

Related parts for MAX917

MAX917 Summary of contents

Page 1

... MAX919/MAX920 (with- out reference) require just 380nA of supply current. These features make the MAX917–MAX920 family of comparators ideal for all 2-cell battery applications, including monitoring/management. The unique design of the output stage limits supply-cur- rent surges while switching, virtually eliminating the supply glitches typical of many other comparators ...

Page 2

... +25° MIN MAX V = 1. +25°C MAX917 only 5V 8mA SOURCE MIN - +25°C MAX917 only 1.8V 1mA SOURCE MIN T = +25° 5V 8mA SINK MIN +25° 1.8V ...

Page 3

... SOT23, 1.8V, Nanopower, Beyond-the-Rails Comparators With/Without Reference ELECTRICAL CHARACTERISTICS—MAX917/MAX918 (continued +5V 0V IN+ REF A PARAMETER SYMBOL High-to-Low Propagation Delay t PD- (Note 4) Low-to-High Propagation Delay t PD+ (Note 4) Rise Time t RISE Fall Time t FALL Power-Up Time t ON Reference Voltage ...

Page 4

... 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 (Figure 2). OS Note 4: Specified with an input overdrive (V above and beyond the offset voltage and hysteresis of the comparator input. For the MAX917/MAX918, reference voltage error should also be added. 4 _______________________________________________________________________________________ CONDITIONS ...

Page 5

... TEMPERATURE (°C) MAX919/MAX920 SUPPLY CURRENT vs. OUTPUT TRANSITION FREQUENCY 1. 100 1k 10k 100k OUTPUT TRANSITION FREQUENCY (Hz) MAX917/MAX919 OUTPUT-VOLTAGE HIGH vs. SOURCE CURRENT 0 1. 0.4 0.3 0.2 0 SOURCE CURRENT (mA) 5 ...

Page 6

... SHORT-CIRCUIT SOURCE CURRENT vs. TEMPERATURE 140 120 100 1. -40 - TEMPERATURE (°C) MAX917/MAX918 REFERENCE VOLTAGE vs. TEMPERATURE 1.246 1.245 1.244 V = 1.8V CC 1.243 1.242 1.241 -40 - TEMPERATURE (°C) MAX917/MAX918 REFERENCE OUTPUT VOLTAGE vs. ...

Page 7

... PROPAGATION DELAY (t vs. INPUT OVERDRIVE 100 INPUT OVERDRIVE (mV) ) vs. PROPAGATION DELAY ( 5V) CC 10k 20μs/div ) PD 1. 100 1000 ) PD 1. PD- MAX917-920 toc27 IN+ (50mV/ div) OUT (2V/div) 7 ...

Page 8

... PD 1.8V) CC MAX917-920 toc32 20μs/div = 5V) MAX917-920 toc34 IN+ (50mV/div) OUT (2V/div) MAX917/MAX919 PROPAGATION DELAY ( 3V) CC MAX917-920 toc30 IN+ (50mV/ div) OUT (2V/div) 20μs/div MAX917/MAX919 10kHz RESPONSE (V = 1.8V) CC MAX917-920 toc33 IN+ (50mV/ div) OUT (1V/div) 20μs/div POWER-UP/DOWN RESPONSE MAX917-920 toc35 ...

Page 9

... Large internal output drivers allow rail-to-rail output swing with up to ±8mA loads. The output stage employs a unique design that mini- mizes supply-current surges while switching, virtually eliminating the supply glitches typical of many other comparators. The MAX917/MAX919 have a push-pull _______________________________________________________________________________________ IN+ OUT IN- ...

Page 10

... MAX406. Applications Information Low-Voltage, Low-Power Operation The MAX917–MAX920 are ideally suited for use with most battery-powered systems. Table 1 lists a variety of battery types, capacities, and approximate operating times for the MAX917–MAX920, assuming nominal conditions. ...

Page 11

... They have open-drain outputs and require an external pullup resistor (Figure 4). Additional hysteresis = 5V, and can be generated using positive feedback, but the for- mulas differ slightly from those of the MAX917/ MAX919. Use the following procedure to calculate resistor values. ). For this HB 1) Select R3 according to the formulas the two resulting resistor values ...

Page 12

... Figure 4. MAX918/MAX920 Additional Hysteresis Pin Configurations (continued) TOP VIEW N.C. 1 IN- (REF) 2 MAX917 MAX918 3 IN+ MAX919 MAX920 ARE FOR MAX917/MAX918. 12 ______________________________________________________________________________________ Figure 5 shows a zero-crossing detector application. ⎛ ⎞ ⎜ ⎟ The MAX919’s inverting input is connected to ground, ⎝ ⎠ R1 ...

Page 13

... Comparators With/Without Reference For the latest package outline information and land patterns www.maxim-ic.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 ...

Page 14

... Comparators With/Without Reference For the latest package outline information and land patterns www.maxim-ic.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 ...

Page 15

... Added lead-free and automotive qualified parts Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 15 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © ...

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