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LTC1843IS8#TR

Description
Comparator Dual ±5.5V/11V 8-Pin SOIC N T/R
CategoryThe comparator   
File Size206KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LTC1843IS8#TR Overview

Comparator Dual ±5.5V/11V 8-Pin SOIC N T/R

LTC1843IS8#TR Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesNot Compliant
ECCN (US)EAR99
Part StatusUnconfirmed
HTS8542.39.00.01
SVHCYes
SVHC Exceeds ThresholdYes
Manufacturer TypeUltra Low Power Comparator
Number of Channels per Chip2
Rail to RailNo
Typical CMRR (dB)80
Typical PSRR (dB)80
Maximum Propagation Delay Time (ns)12000(Typ)
Output TypeOpen Drain
Maximum Operating Supply Voltage (V)±5.5|11
Maximum Input Offset Voltage (mV)10@5V@-40C to 85C
Minimum Single Supply Voltage (V)2.5
Typical Single Supply Voltage (V)3|5|9
Maximum Single Supply Voltage (V)11
Minimum Dual Supply Voltage (V)±1.25
Typical Dual Supply Voltage (V)±3|±5
Maximum Dual Supply Voltage (V)±5.5
Maximum Quiescent Current (mA)5.7@5V@-40C to 85C
Maximum Power Dissipation (mW)500
Power Supply TypeSingle|Dual
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
PackagingTape and Reel
Standard Package NameSOP
Pin Count8
Supplier PackageSOIC N
MountingSurface Mount
Package Height1.5(Max)
Package Length5(Max)
Package Width3.99(Max)
PCB changed8
Lead ShapeGull-wing
LTC1841/LTC1842/LTC1843
Ultralow Power Dual
Comparators with Reference
FEATURES
s
s
DESCRIPTION
The LTC
®
1841/LTC1842/LTC1843 are ultralow power dual
comparators with built-in reference (LTC1842/LTC1843).
The comparators feature less than 5.7µA supply current
over temperature, a 1.182V
±1%
reference, program-
mable hysteresis and open-drain outputs that sink cur-
rent. The reference output can drive a bypass capacitor of
up to 0.01µF without oscillation.
The LTC1841 operates from a single 2V to 11V supply or
a dual
±1V
to
±5.5V
supply. The LTC1842/LTC1843
operate from a single 2.5V to 11V supply or a dual
±1.25V
to
±5.5V
supply. The LTC1842/LTC1843 hysteresis is
easily programmed by using two resistors and the HYST
pin. The comparators’ input operates from the negative
supply to within 1.3V of the positive supply. The compara-
tors’ output stage can typically sink greater than 20mA. By
eliminating the cross-conduction current that normally
happens when the comparators change logic states, power
supply glitches are eliminated.
The LTC1841/LTC1842/LTC1843 are available in SO-8
packages.
s
s
s
s
s
s
Ultralow Quiescent Current: 3.5
µ
A Typ
Open-Drain Outputs Typically Sink
Greater Than 20mA
Wide Supply Range: (LTC1841)
Single: 2V to 11V
Dual:
±1V
to
±5.5V
Input Voltage Range Includes the Negative Supply
Reference Output Drives 0.01
µ
F Capacitor
Adjustable Hysteresis
12µs Propagation Delay with 10mV Overdrive
No Current Spike When Switching
APPLICATIONS
s
s
s
s
Battery-Powered System Monitoring
Threshold Detectors
Window Comparators
Oscillator Circuits
, LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATION
Single Li-Ion Cell to 5V Supply
1-CELL
Li-Ion
BATTERY
R1
1.5M
+
C1
100µF
R6
25k
7
V
CC
LTC1843
OUT B 8
6
L1
10µH
7
D1
SUPPLY CURRENT (µA)
3 IN A
+
R3
1M
6 REF
V
2
R4
20k
R5
1.1M
+
R2
100k
4 IN B
V
IN
SW
LT1302-5
Si9924DY
3
SHDN
I
T
8
4
PGND SENSE
V
C
GND
2
R
C
20k
C
C
0.0µF
1
OUTPUT
5V
600mA
+
C2
100µF
+
OUT A 1
R7
500k
LBO
1841/43 TA01
HYST
5
C1, C2: SANYO OS-CON
D1: MOTOROLA MBRS130LT3
L1: COILTRONICS CTX10-3
U
U
U
LTC1843 Supply Current
vs Supply Voltage
5
T
A
= 25°C
4
3
2
1
0
0
2
6
8
4
SUPPLY VOLTAGE (V)
10
12
1841/43 TA02
1
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