LTC4244 Datasheet, PDF (4/28 Pages) Linear Technology – Rugged, CompactPCI Bus Hot Swap Controllers

LTC4244/LTC4244-1
TYPICAL PERFOR A CE CHARACTERISTICS
3.3V and 5V Current Foldback
Profile
60
50
3.3V
5V
40
30
20
10
0
0
1
2
3
4
5
VOLTAGE (V)
4244 G01
12V Foldback Current Limit vs
Temperature
0.9
0.8
12V_OUT = 10V
0.7
0.6
0.5
12V_OUT = 0V
0.4
0.3
0.2
0.1
0
–50 –25 0
25 50 75 100
TEMPERATURE (°C)
4244 G04
V_EE Internal Switch Voltage Drop
vs Temperature
0.14
I_VEEIN = 100mA
0.12
0.10
0.08
0.06
0.04
0.02
0
–50
–25 0 25 50
TEMPERATURE (°C)
75 100
4244 G07
4
12V_OUT Current vs 12V_OUT
Voltage
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
2
4
6
8 10 12
VOLTAGE (V)
4244 G02
V_EE Foldback Current Limit vs
Temperature
0.6
V_EEOUT = 10V
0.5
0.4
0.3
0.2
V_EEOUT = 0V
0.1
0
–50
–25 0 25 50
TEMPERATURE (°C)
75 100
4244 G05
5V_IN Foldback Current Limit
Voltage vs Temperature
60
5V_OUT = 3V
50
40
30
20
5V_OUT = 0V
10
0
–50
–25 0 25 50
TEMPERATURE (°C)
75 100
4244 G08
V_EEOUT Current vs V_EEOUT Voltage
–0.6
–0.5
–0.4
–0.3
–0.2
–0.1
0
0 –2 –4 –6 –8 –10 –12
VOLTAGE (V)
4244 G03
12V Internal Switch Voltage Drop
vs Temperature
0.30
I_12VOUT = 550mA
0.25
0.20
0.15
0.10
0.05
0
–50
–25 0 25 50
TEMPERATURE (°C)
75 100
4244 G06
3.3V_IN Foldback Current Limit
Voltage vs Temperature
60
3.3V_OUT = 2V
50
40
30
20
3.3V_OUT = 0V
10
0
–50
–25 0 25 50
TEMPERATURE (°C)
75 100
4244 G09
42441f