Datasheet

3
LTC1477/LTC1478
TYPICAL PERFORMANCE CHARACTERISTICS
U
W
Supply Current (ON) Switch Resistance
Switch Resistance (5V)
SUPPLY VOLTAGE (V)
0
0
SUPPLY CURRENT (µA)
50
100
150
200
300
1
234
LTC1477/1478 • TPC01
56
250
T
A
= 25°C
OUTPUT TURNED ON, NO LOAD
INPUT VOLTAGE (V)
1
0
SWITCH RESISTANCE (Ω)
0.05
0.10
0.15
0.20
0.30
2
345
LTC1477/1478 • TPC02
67
0.25
T
A
= 25°C
V
IN2
= V
IN3
= NC
ALL V
IN
PINS 
CONNECTED
JUNCTION TEMPERATURE (°C)
0
0
SWITCH RESISTANCE (Ω)
0.05
0.10
0.15
0.20
0.25
0.30
25 50 75 100
LTC1477/1478 • TPC03
125
V
INS
= V
IN1
= 5V
V
IN2
= V
IN3
= NC
ALL V
IN
PINS = 5V
Switch Resistance (3.3V) Short-Circuit Current
Output Current (5V)
JUNCTION TEMPERATURE (°C)
0
0
SWITCH RESISTANCE (Ω)
0.05
0.10
0.15
0.20
0.25
0.30
25 50 75 100
LTC1477/1478 • TPC04
125
V
INS
= V
IN1
= 3.3V
V
IN2
= V
IN3
= NC
ALL V
IN
PINS = 3.3V
OUTPUT VOLTAGE (V)
0
0
OUTPUT CURRENT (A)
1
2
3
4
6
1
234
LTC1477/1478 • TPC06
56
5
T
A
= 25°C
ALL V
IN
PINS = 5V
V
IN2
= V
IN3
= NC
SUPPLY VOLTAGE (V)
0
0
SHORT-CIRCUIT CURRENT (A)
0.5
1.0
1.5
2.0
3.0
1
234
LTC1477/1478 • TPC05
56
2.5
T
J
= 25°C
ALL V
IN
PINS
CONNECTED
V
IN2
= V
IN3
= NC
Output Current (3.3V) Inrush Current (5V)
Inrush Current (3.3V)
TIME (ms)
–0.4
INRUSH CURRENT (A)OUTPUT VOLTAGE (V)

0
1
2.8
LTC1477/1478 • TPC09
6
4
0
0.4
1.2
2.0
2
3
2
0
0.8
1.6
2.4
C
OUT
= 470µF
R
OUT
= 10Ω
C
OUT
= 10µF
R
OUT
= 10Ω
CURRENT
LIMITED
T
J
= 25°C
ALL V
IN
PINS = 3.3V
OUTPUT VOLTAGE (V)
0
0
OUTPUT CURRENT (A)
1
2
3
4
6
1
234
LTC1477/1478 • TPC07
56
5
T
A
= 25°C
ALL V
IN
PINS = 3.3V
V
IN2
= V
IN3
= NC
TIME (ms)
–0.4
INRUSH CURRENT (A)OUTPUT VOLTAGE (V)

0
1
2.8
LTC1477/1478 • TPC08
6
4
0
0.4
1.2
2.0
2
3
2
0
0.8
1.6
2.4
C
OUT
= 470µF
R
OUT
= 10Ω
C
OUT
= 10µF
R
OUT
= 10Ω
CURRENT
LIMITED
T
J
= 25°C
ALL V
IN
PINS = 5V