Datasheet

TPS2044, TPS2054
QUAD POWER-DISTRIBUTION SWITCHES
SLVS174B – JULY 1998 – REVISED FEBRUARY 1999
14
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 24
1.15
1.125
1.1
2.5 3 3.5 4
Threshold Trip Current – A
1.175
THRESHOLD TRIP CURRENT
vs
INPUT VOLTAGE
1.2
4.5 5 65.5
V
I
– Input Voltage – V
T
A
= 25°C
Load Ramp = 1 A/10 ms
Figure 25
0.8
–50 –25 0 25 50
0.9
SHORT-CIRCUIT OUTPUT CURRENT
vs
JUNCTION TEMPERATURE
0.95
75 100 125
0.85
T
J
– Junction Temperature – °C
– Short-circuit Output Current – A
I
OS
V
I(INx)
= 5 V
V
I(INx)
= 4 V
V
I(INx)
= 2.7 V
Figure 26
2.2
2.1
2
–50 –25 0 25 50 75
UVLO – Undervoltage Lockout – V
2.3
2.4
UNDERVOLTAGE LOCKOUT
vs
JUNCTION TEMPERATURE
2.5
100 125 150
T
J
– Junction Temperature – °C
Start Threshold
Stop Threshold
Figure 27
250
150
100
0
0 2.5 5 7.5
Current Limit Response –
350
450
Peak Current – A
CURRENT LIMIT RESPONSE
vs
PEAK CURRENT
500
10 12.5
400
300
200
50
sµ
V
I(INx)
= 5 V
T
A
= 25°C