LTC1421 Datasheet, PDF (4/24 Pages) Linear Technology – Hot Swap Controller

LTC1421/LTC1421-2.5
TYPICAL PERFORMANCE CHARACTERISTICS
Reference Voltage vs
Temperature
1.238
1.236
V_CCLO = 5V
V_CCHI = 12V
1.234
1.232
1.230
1.228
1.226
1.224
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1421 G01
GATELO Voltage vs V_CCLO Voltage
26
V_CCHI = 12V
24
22
20
18
16
14
12
02
4 6 8 10
V_CCLO VOLTAGE (V)
12 14
1421 G04
I_CCHI Supply Current
vs Temperature
555
V_CCLO = 5V
550 ^{VCCHI = 12V}
545
540
535
530
525
520
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1421 G07
Gate Voltage vs Temperature
24
V_CCLO = 5V
23 ^{VCCHI = 12V}
22
GATEHI
21
20
19
GATELO
18
17
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1421 G02
GATEHI Voltage vs V_CCHI Voltage
26
V_CCLO = 5V
24
22
20
18
16
14
12
02
4 6 8 10
V_CCHI VOLTAGE (V)
12 14
1421 G05
V_OL vs I_SINK
600
V_CCLO = 5V
V_CCHI = 12V
500
400
COMPOUT
PWRGD
RESET
300
FAULT
200
100
0
0
2
4
6
8
10
SINK CURRENT (mA)
1421 G08
Reference Voltage
vs Source Current
1.245
1.240
V_CCLO = 5V
V_CCHI = 12V
1.235
1.230
1.225
1.220
0
2
4
6
8
SOURCE CURRENT (mA)
10
1421 G03
I_CCLO Supply Current
vs Temperature
V_CCLO = 5V
1500 ^{VCCHI = 12V}
1400
1300
1200
– 50 – 25
0 25 50 75
TEMPERATURE (°C)
100 125
1421 G06
CPON Voltage vs Sink Current
(Charge Pump Off)
2.5
V_CCLO = 5V
V_CCHI = 12V
2.0
1.5
1.0
0.5
0
0 0.5 1.0 1.5 2.0 2.5 3.0
SINK CURRENT (mA)
1421 G09
4