Datasheet

4
LTC1421/LTC1421-2.5
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
TEMPERATURE (°C)
–50
1.232
1.234
1.238
25 75
1421 G01
1.230
1.228
–25 0
50 100 125
1.226
1.224
1.236
REFERENCE VOLTAGE (V)
V
CCLO
= 5V
V
CCHI
= 12V
Reference Voltage vs
Temperature
SOURCE CURRENT (mA)
0
REFERENCE VOLTAGE (V)
1.235
1.240
1.245
8
1421 G03
1.230
1.225
1.220
2
4
6
10
V
CCLO
= 5V
V
CCHI
= 12V
Reference Voltage
vs Source CurrentGate Voltage vs Temperature
TEMPERATURE (°C)
–50
21
22
24
25 75
1421 G02
20
19
–25 0
50 100 125
18
17
23
GATE VOLTAGE (V)
V
CCLO
= 5V
V
CCHI
= 12V
GATEHI
GATELO
GATELO Voltage vs V
CCLO
Voltage
V
CCLO
VOLTAGE (V)
0
20
22
26
610
1421 G04
18
16
24
81214
14
12
24
GATELO VOLTAGE (V)
V
CCHI
= 12V
GATEHI Voltage vs V
CCHI
Voltage
V
CCHI
VOLTAGE (V)
0
20
22
26
610
1421 G05
18
16
24
81214
14
12
24
GATEHI VOLTAGE (V)
V
CCLO
= 5V
I
CCLO
Supply Current
vs Temperature
TEMPERATURE (°C)
–50
1400
25 75
1421 G06
1300
–25 0
50 100 125
1200
1500
I
CCLO
SUPPLY CURRENT (µA)
V
CCLO
= 5V
V
CCHI
= 12V
V
OL
vs I
SINK
CPON Voltage vs Sink Current
(Charge Pump Off)
I
CCHI
Supply Current
vs Temperature
TEMPERATURE (°C)
–50
540
25 75
1421 G07
530
–25 0
50 100 125
520
550
545
535
525
555
I
CCHI
SUPPLY CURRENT (µA)
V
CCLO
= 5V
V
CCHI
= 12V
SINK CURRENT (mA)
0
0
VOLTAGE (mV)
100
200
300
400
500
FAULT
600
2468
1421 G08
10
V
CCLO
= 5V
V
CCHI
= 12V
COMPOUT
PWRGD
RESET
SINK CURRENT (mA)
0
0
CPON VOLTAGE (V)
0.5
1.0
1.5
2.0
2.5
0.5
1.0 1.5 2.0
1421 G09
2.5 3.0
V
CCLO
= 5V
V
CCHI
= 12V