Datasheet

3
LTC1422
1422fb
TYPICAL PERFORMANCE CHARACTERISTICS
UW
SUPPLY VOLTAGE (V)
2
0
GATE VOLTAGE (V)
5
10
15
20
30
4
6810
1422 G03
12 14
25
T
A
= 25°C
I
G
= 0A
Gate Voltage (V
GATE
)
vs Supply Voltage
Gate Current vs Temperature
SUPPLY VOLTAGE (V)
2
FEEDBACK THRESHOLD VOLTAGE (V)
1.2350
1.2345
1.2340
1.2335
1.2330
1.2325
1.2320
4
6810
1422 G07
12 14
T
A
= 25°C
HIGH THRESHOLD
LOW THRESHOLD
Feedback Threshold Voltage
vs Supply Voltage
Glitch Filter Time
vs Feedback Transient
Gate Voltage (V
GATE
)
vs Temperature
TEMPERATURE (°C)
–55
16.4
GATE VOLTAGE (V)
16.6
17.0
17.2
17.4
65
18.2
1422 G04
16.8
5–35
85
25–15
105
45
125
17.6
17.8
18.0
V
CC
= 5V
I
G
= 0A
SUPPLY VOLTAGE (V)
2
0
SUPPLY CURRENT (µA)
200
400
600
800
1200
4
6810
1422 G01
12 14
1000
T
A
= 25°C
Supply Current vs Supply Voltage Supply Current vs Temperature
TEMPERATURE (°C)
–55
550
SUPPLY CURRENT (µA)
575
625
650
675
65
775
1422 G02
600
5–35
85
25–15
105
45
125
700
725
750
V
CC
= 5V
Gate Current vs Supply Voltage
SUPPLY VOLTAGE (V)
2
4
GATE CURRENT (µA)
6
8
10
12
16
4
6810
1422 G05
12 14
14
T
A
= 25°C
V
G
= 0V
FEEDBACK TRANSIENT (mV)
0
10
GLITCH FILTER TIME (µs)
20
30
40
50
70
40
80 120 160
1422 G09
200 240
60
T
A
= 25°C
Feedback Threshold Voltage
vs Temperature
TEMPERATURE (°C)
–55
FEEDBACK THRESHOLD VOLTAGE (V)
65
1.237
1.236
1.235
1.234
1.233
1.232
1.231
1.230
1.229
1.228
1422 G08
5–35
85
25–15
105
45
125
HIGH THRESHOLD
LOW THRESHOLD
TEMPERATURE (°C)
–55
8.6
GATE CURRENT (µA)
8.8
9.2
9.4
9.6
65
10.4
1422 G06
9.0
5–35
85
25–15
105
45
125
9.8
10.0
10.2
V
CC
= 5V
V
G
= 0V