LTC1644
5
1644f
TYPICAL PERFOR A CE CHARACTERISTICS
UW
5V/3.3V Circuit Breaker Trip
Voltage vs Temperature
5V/3.3V Circuit Breaker Overcurrent
Fault Response Time
vs Temperature
5V/3.3V Circuit Breaker Short-
Circuit Response Time
vs Temperature
GATE Pin Current vs Temperature
(V
GATE
= 2V, FAULT = 0V)
GATE Pin Current vs Temperature
(V
GATE
= 5V, OFF/ON = 4V)
GATE Pin Voltage vs Temperature
12V Internal Switch Voltage Drop
vs Temperature
V
EE
Internal Switch Voltage Drop
vs Temperature
TEMPERATURE (°C)
–50
48.0
47.5
47.0
46.5
46.0
45.5
45.0
44.5
25 75
1644 G11
–25 0
50 100
5V/3.3V CIRCUIT BREAKER OVERCURRENT
FAULT RESPONSE TIME (µs)
TEMPERATURE (°C)
–50
0.100
5V/3.3V CIRCUIT BREAKER SHORT-CIRCUIT
RESPONSE TIME (µs)
0.105
0.110
0.115
0.120
0.125
–25
02550
1644 G12
75 100
GATE Pin Current vs Temperature
(V
GATE
= 0V, OFF/ON = 0V)
TEMPERATURE (°C)
–50
GATE PIN CURRENT (mA)
6
8
10
25
75
1644 G13
4
2
0
–25 0 50
12
14
16
100
V
GATE
= 2V
FAULT = 0V
TEMPERATURE (°C)
–50
300
250
200
150
100
50
0
25 75
1644 G14
–25 0
50 100
GATE PIN CURRENT (µA)
V
GATE
= 5V
OFF/ON = 4V
TEMPERATURE (°C)
–50
–85
GATE PIN CURRENT (A)
–80
–70
–65
–60
50
–40
1644 G15
–75
0
–25
75
25 100
–55
–50
–45
V
GATE
= 5V
OFF/ON = 4V
TEMPERATURE (°C)
–50
11.97
11.96
11.95
11.94
11.93
11.92
25 75
1644 G16
–25 0
50 100
GATE PIN VOLTAGE (V)
I
GATE
= –1µA
TEMPERATURE (°C)
–50
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0
25 75
1644 G17
–25 0
50 100
V
CC
INTERNAL SWITCH VOLTAGE DROP (V)
I = 500mA
TEMPERATURE (°C)
–50
0
V
EE
INTERNAL SWITCH VOLTAGE DROP (V)
0.02
0.06
0.08
0.10
50
0.18
1644 G18
0.04
0
–25
75
25 100
0.12
0.14
0.16
I
EE
= 100mA
TEMPERATURE (°C)
–50
56.2
56.0
55.8
55.6
55.4
55.2
55.0
54.8
25 75
1644 G10
–25 0
50 100
5V/3.3V CIRCUIT BREAKER TRIP VOLTAGE (mV)
TIMER PIN FLOATING
