![](http://datasheet.mmic.net.cn/Linear-Technology/LTC1842IS8-TRPBF_datasheet_105396/LTC1842IS8-TRPBF_3.png)
3
LTC1841/LTC1842/LTC1843
ELECTRICAL CHARACTERISTICS V+ = 5V, V– = 0V, T
A = 25°C unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
tPD
Propagation Delay
COUT = 10pF, RPULL-UP = 100k Overdrive = 10mV
12
s
Overdrive = 100mV
4
s
ILEAK
Output Leakage Current
VOUT = 12V (Note 2)
q
1
100
nA
VOL
Output Low Voltage
IOUT = 1.8mA
q
V – + 0.4V
V
Reference (LTC1842/LTC1843)
VREF
Reference Voltage
No Load
25
°C
1.174
1.182
1.190
V
0
°C to 70°C
q
1.170
1.194
V
–40
°C to 85°C
q
1.164
1.200
V
VREF Load Regulation
ISOURCE = 1mA
q
13
mV
ISINK =10A
1.75
4
mV
q
6mV
en
Voltage Noise
100Hz to 100kHz
100
VRMS
V + = 3V, V – = 0V, TA = 25°C unless otherwise noted.
SYMBOL PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Power Supply
V +
Supply Voltage Range
LTC1841
q
2.0
11
V
LTC1842/LTC1843
q
2.5
11
V
ICC
Supply Current
HYST = REF (Note 2)
q
3.5
5.5
A
Comparator
VOS
Comparator Input Offset Voltage
(Note 3)
q
±3
±10
mV
IIN
Input Leakage Current (IN +, IN –)IN + = IN – = 1.5V (LTC1841),
q
±0.01
±1nA
IN + = IN – = VREF (LTC1842/LTC1843)
VIN
Comparator Input Voltage Range
q
V –
V + – 1.3V
V
PSRR
Power Supply Rejection Ratio
V + = 2V to 11V (LTC 1841),
0.1
1
mV/V
V + = 2.5V to 11V (LTC1842/LTC1843)
CMRR
Common Mode Rejection Ratio
VCM = V – to (V + – 1.3V) LTC1841
q
0.1
1
mV/V
VHYST
Hysteresis Input Voltage Range
LTC1842/LTC1843
q
VREF – 50mV
VREF
V
tPD
Propagation Delay
COUT = 10pF, RPULL-UP = 100k Overdrive = 10mV
14
s
Overdrive = 100mV
5
s
ILEAK
Output Leakage Current
VOUT = 12V (Note 2)
q
1
100
nA
VOL
Output Low Voltage
IO = 0.8mA
q
V – + 0.4V
V
Reference (LTC1842/LTC1843)
VREF
Reference Voltage
No Load
25
°C
1.174
1.182
1.190
V
0
°C to 70°C
q
1.170
1.194
V
–40
°C to 85°C
q
1.164
1.200
V
VREF Load Regulation
ISOURCE = 1mA
q
26
mV
ISINK =10A
1.75
4
mV
q
6mV
en
Voltage Noise
100Hz to 100kHz
100
VRMS
The q denotes specifications which apply over the full operating
temperature range.
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: IN + = IN – + 80mV, output is in high impedance state.
Note 3: VCM = 1/2(V + – V –) for LTC1841, VCM = VREF for LTC1842/
LTC1843.