LTC1644 LINER [Linear Technology], LTC1644 Datasheet - Page 4

• Manufacturer Part Number: LTC1644
• Description: CompactPCI Bus Hot Swap Controller
• Manufacturer: LINER [Linear Technology]

LTC1644
4
TYPICAL PERFOR A CE CHARACTERISTICS
2.56
2.55
2.54
2.53
2.52
2.51
2.50
2.49
2.48
2.47
3.2
3.1
3.0
2.9
2.8
11
10
9
8
7
6
5
4
3
2
1
0
–50
–50
0
3.3V and 5V Current Foldback
Profile
12V
vs Temperature
3V
vs Temperature
3V
IN
OUT
IN
–25
–25
UVLO Threshold Voltage
1
Supply Current
OUTPUT VOLTAGE (V)
TEMPERATURE ( C)
TEMPERATURE ( C)
0
0
5V
RAMPING
2
RAMPING
DOWN
OUT
UP
25
25
3
T
R
A
50
SENSE
50
= 25 C
W
= 0.005
4
75
75
1644 G07
1644 G01
1644 G04
100
100
U
5
8.50
8.45
8.40
8.35
8.30
8.20
8.25
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
60
50
10
40
30
20
0
0
–50
–50
0
12V Output Current
12V
vs Temperature
5V Foldback Current Limit Voltage
vs Temperature
T
12V
TIMER = 0V
A
= 25 C
IN
IN
–25
–25
2
= 12V
Undervoltage Lockout
OUTPUT VOLTAGE (V)
TEMPERATURE ( C)
TEMPERATURE ( C)
4
0
0
5V
5V
RAMPING
RAMPING
OUT
OUT
DOWN
UP
25
25
6
= 3V
= 0V
50
50
8
10
75
75
1644 G02
1644 G05
1644 G08
100
12
100
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
2.55
2.54
2.53
2.52
2.51
2.50
2.49
2.48
2.46
2.47
60
50
40
30
20
10
0
0
–50
–50
0
– 12V Output Current
5V
vs Temperature
3V Foldback Current Limit Voltage
vs Temperature
T
V
TIMER = 0V
A
EEIN
IN
= 25 C
–25
–25
–2
UVLO Threshold Voltage
= –12V
OUTPUT VOLTAGE (V)
TEMPERATURE ( C)
TEMPERATURE ( C)
–4
0
0
3V
3V
RAMPING
RAMPING
DOWN
OUT
OUT
UP
–6
25
25
= 2V
= 0V
–8
50
50
–10
75
75
1644 G03
1644 G09
1644 G06
1644f
–12
100
100