Datasheet
4
LTC1443/LTC1444/LTC1445
144345fc
LTC1444/LTC1445
Hysteresis Control
V
REF
– V
HYST
(mV)
0
IN
+
– IN
–
(mV)
–20
0
20
30
50
LTC1443/44/45 • TPC01
–40
–60
–80
10 20 40
40
60
80
Supply Current vs Supply Voltage Supply Current vs Temperature
SUPPLY VOLTAGE (V)
1.0
4.0
SUPPLY CURRENT (µA)
4.2
4.4
4.6
4.8
5.0
5.2
1.5 2.0 2.5 3.0
LTC1443/44/45 • TPC02
T
A
= 25°C
TEMPERATURE (°C)
–60
SUPPLY CURRENT (µA)
20
5.8
5.4
5.0
4.6
4.2
3.8
3.4
3.0
LTC1443/44/45 • TPC03
–20 60
–40
40
080100 120
IN
+
= (IN
–
+ 100mV)
V
–
= GND (LTC1443)
V
+
= 3V
V
–
= 0V
V
+
= 5V
V
–
= 0V
V
+
= 5V
V
–
= –5V
LTC1444/LTC1445 Reference
Voltage vs Temperature
TEMPERATURE (°C)
–60
1.208
REFERENCE VOLTAGE (V)
1.212
1.216
1.220
1.224
–40 –20 0 20
LTC1443/44/45 • TPC04
40 60 80 100 120
V
+
= 5V
TEMPERATURE (°C)
–60
REFERENCE VOLTAGE (V)
1.186
1.184
1.182
1.180
1.178
1.176
1.174
1.172
1.170
100
LTC1443/44/45 • TPC05
–20
20
60
80
–40
0
40
120 140
V
+
= 5V
V
–
= GND
LTC1443 Reference Voltage
vs Temperature
LOAD CURRENT (mA)
REFERENCE VOLTAGE (V)
1.184
1.183
1.182
1.181
1.180
1.179
1.178
0.2 0.4 0.6 0.8
LTC1443/44/45 • TPC06
1.00.10 0.3 0.5 0.7 0.9
V
+
= 5V
V
–
= GND
T
A
= 25°C
SOURCE
LTC1443 Reference Output
Voltage vs Output Load Current
TYPICAL PERFOR A CE CHARACTERISTICS
UW
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
+
= 3V, V
–
= GND = 0V, unless otherwise noted.
ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Reference
V
REF
Reference Voltage No Load, LTC1443 C Temp Range ● 1.170 1.182 1.194 V
I Temp Range ● 1.164 1.200 V
No Load, LTC1444/ C Temp Range ● 1.209 1.221 1.233 V
LTC1445
I Temp Range
● 1.203 1.239 V
I
SOURCE
Reference Output Source Current ∆V
REF
≤ 1mV ● 60 120 µA
I
SINK
Reference Output Sink Current ∆V
REF
≤ 2.5mV 10 15 µA
∆V
REF
≤ 5mV ● 10 15 µA
Noise Noise Voltage 100Hz to 100kHz 100 µV
RMS
Maximum Rating condition for extended periods may affect device
reliability and lifetime.