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MAX920EUK-T

P1-P3P4-P6P7-P9P10-P12P13-P15
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.
General Description
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.
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
♦ Ultra-Low Supply Current
380nA per Comparator (MAX919/MAX920)
750nA per Comparator with Reference
(MAX917/MAX918)
♦ Guaranteed to Operate Down to +1.8V
♦ Internal 1.245V ±1.5% Reference
(MAX917/MAX918)
♦ Input Voltage Range Extends 200mV
Beyond-the-Rails
♦ CMOS Push-Pull Output with ±8mA Drive
Capability (MAX917/MAX919)
♦ Open-Drain Output Versions Available
(MAX918/MAX920)
♦ Crowbar-Current-Free Switching
♦ Internal Hysteresis for Clean Switching
♦ No Phase Reversal for Overdriven Inputs
♦ Space-Saving SOT23 Package
MAX917–MAX920
SOT23, 1.8V, Nanopower, Beyond-the-Rails
Comparators With/Without Reference
________________________________________________________________ Maxim Integrated Products 1
V
EE
IN- (REF)
IN+
1
5
V
CC
OUT
MAX917
MAX918
MAX919
MAX920
SOT23
TOP VIEW
2
3
4
( ) ARE FOR MAX917/MAX918.
PART PIN-PACKAGE
TOP
MARK
PKG
CODE
MAX917EUK+T 5 SOT23
ADIQ
U5+1
MAX917ESA+ 8 SO
—
S8+2
MAX918EUK+T 5 SOT23
ADIR
U5+1
MAX918ESA+ 8 SO
—
S8+2
MAX919EUK+T 5 SOT23
ADIS
U5+1
MAX919EUK/V+T 5 SOT23
AFGP
U5+1
MAX919ESA+ 8 SO
—
S8+2
MAX920EUK+T 5 SOT23
ADIT
U5+1
MAX920ESA+ 8 SO
—
S8+2
Pin Configurations continue at end of data sheet.
Typical Application Circuit appears at end of data sheet.
Pin Configurations
Selector Guide
Ordering Information
Open-DrainYesMAX918 750
380
380
750
SUPPLY
CURRENT
(nA)
Open-DrainNoMAX920
PART
Push-PullNoMAX919
Push-PullYesMAX917
OUTPUT
TYPE
INTERNAL
REFERENCE
Beyond-the-Rails is a trademark of Maxim Integrated Products, Inc.
19-1512; Rev 2; 10/10
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.
MAX917–MAX920
SOT23, 1.8V, Nanopower, Beyond-the-Rails
Comparators With/Without Reference
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX917/MAX918
(V
CC
= +5V, V
EE
= 0V, V
IN+
= V
REF
, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
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.
Supply Voltage (V
CC
to V
EE
)..................................................+6V
Voltage Inputs (IN+, IN-, REF) .........(V
EE
- 0.3V) to (V
CC
+ 0.3V)
Current Into Input Pins......................................................±20mA
Output Voltage
MAX917/MAX919 ........................(V
EE
- 0.3V) to (V
CC
+ 0.3V)
MAX918/MAX920 ......................................(V
EE
- 0.3V) to +6V
Output Current..................................................................±50mA
Output Short-Circuit Duration .............................................10sec
Continuous Power Dissipation (T
A
= +70°C)
5-Pin SOT23 (derate 7.31mW/°C above +70°C).........571mW
8-Pin SO (derate 5.88mW/°C above +70°C)...............471mW
Operating Temperature Range ...........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
Soldering Temperature (reflow) .......................................+260°C
V
CC
= 1.8V
V
CC
= 1.8V
V
CC
= 5V
V
CC
= 1.8V
V
CC
= 5V
Output-Voltage Swing Low V
OL
190 400
mV
500
55 200
T
A
= T
MIN
to T
MAX
T
A
= +25°C
300
V
CC
= 5V,
I
SINK
= 8mA
T
A
= T
MIN
to T
MAX
V
CC
= 1.8V,
I
SINK
= 1mA
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
T
A
= T
MIN
to T
MAX
T
A
= +25°C
PARAMETER SYMBOL MIN TYP MAX UNITS
10
Input Offset Voltage V
OS
15
mV
IN+ Voltage Range V
IN+
V
EE
- 0.2 V
CC
+ 0.2 V
1.60
Input-Referred Hysteresis V
HB
4 mV
Input Bias Current I
B
0.15 1
nA
2
Power-Supply Rejection Ratio PSRR 0.1 1 mV/V
Supply Current
Supply Voltage Range V
CC
1.8 5.5 V
I
CC
0.75
µA
0.80 1.30
Output-Voltage Swing High V
CC
- V
OH
190 400
mV
500
55 200
300
Output Leakage Current I
LEAK
0.001 1 µA
Output Short-Circuit Current I
SC
95
mA
8
98
10
CONDITIONS
MAX917 only, V
CC
=
5V, I
SOURCE
= 8mA
(Note 2)
Inferred from the output swing test
(Note 3)
MAX917 only, V
CC
=
1.8V, I
SOURCE
= 1mA
V
CC
= 1.8V to 5.5V
MAX918 only, V
O
= 5.5V
Sourcing, V
O
= V
EE
Inferred from the PSRR test
Sinking, V
O
= V
CC
V
CC
= 5V
MAX917–MAX920
SOT23, 1.8V, Nanopower, Beyond-the-Rails
Comparators With/Without Reference
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS—MAX919/MAX920
(V
CC
= +5V, V
EE
= 0V, V
CM
= 0V, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
V
CC
= 1.8V
V
CC
= 5V
Inferred from the PSRR test
-0.2V ≤ V
CM
≤ (V
CC
+ 0.2V) (Note 3)
T
A
= +25°C
Inferred from the CMRR test
-0.2V ≤ V
CM
≤
(V
CC
+ 0.2V) (Note 2)
T
A
= +25°C
CONDITIONS
T
A
= T
MIN
to T
MAX
0.45 0.80
µA
0.38
I
CC
V1.8 5.5V
CC
Supply Voltage Range
Supply Current
nA
0.15 1
I
B
Input Bias Current
mV4V
HB
Input-Referred Hysteresis
1.2
T
A
= +25°C
VV
EE
- 0.2 V
CC
+ 0.2V
CM
Input Common-Mode
Voltage Range
mV
15
V
OS
Input Offset Voltage
10
UNITSMIN TYP MAXSYMBOLPARAMETER
T
A
= T
MIN
to T
MAX
2T
A
= T
MIN
to T
MAX
V
CC
= 5V,
R
PULLUP
= 100kΩ
V
CC
= 1.8V,
R
PULLUP
= 100kΩ
V
CC
= 5V
V
CC
= 1.8V
V
CC
= 1.8V
MAX917 only
95
µs
30
t
PD+
Low-to-High Propagation Delay
(Note 4)
35
MAX918 only
120
µs
95
CONDITIONS
T
A
= +25°C
ms1.2
22
17
t
PD-
High-to-Low Propagation Delay
(Note 4)
t
ON
Power-Up Time
ΔI
OUT
= 10nA mV/nA±0.2
ΔV
REF
/
ΔI
OUT
Reference Load Regulation
UNITS
MIN TYP MAXSYMBOL
PARAMETER
C
L
= 15pF
1.8V ≤ V
CC
≤ 5.5V
BW = 10Hz to 100kHz, C
REF
= 1nF
MAX917 only, C
L
= 15pF
V
CC
= 5V
BW = 10Hz to 100kHz
T
A
= T
MIN
to T
MAX
mV/V0.1
ΔV
REF
/
ΔV
CC
Reference Line Regulation
215
µV
RMS
e
n
Reference Output
Voltage Noise
1.200 1.290
V
1.227 1.245 1.263
V
REF
Reference Voltage
µs4t
FALL
Fall Time
µs6t
RISE
Rise Time
ppm/°CTC
REF
Reference Voltage Temperature
Coefficient
600
ELECTRICAL CHARACTERISTICS—MAX917/MAX918 (continued)
(V
CC
= +5V, V
EE
= 0V, V
IN+
= V
REF
, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at T
A
= +25°C.) (Note 1)
P1-P3P4-P6P7-P9P10-P12P13-P15

MAX920EUK-T

Mfr. #:
Buy MAX920EUK-T
Manufacturer:
Maxim Integrated
Description:
Analog Comparators 1.8V nPower Comparator
Lifecycle:
New from this manufacturer.
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