TPS2149
TPS2159
SLVS401 – AUGUST 2001
TYPICAL CHARACTERISTICS
SWITCH TURNOFF DELAY AND FALL TIME
SWITCH TURNON DELAY AND RISE TIME
WITH 120-µF LOAD
WITH 120-µF LOAD
V
I(EN)
(5 V/div)
V
I(EN)
(5 V/div)
V
O(OUT)
(2 V/div)
V
O(OUT)
(2 V/div)
V = 5 V
V = 5 V
I
T
= 25°C
= 120 µF
= 25 Ω
T
= 25°C
= 120 µF
= 25 Ω
A
L
L
C
R
0
4
8
12 16 20 24 28 32 36 40
t – Time – ms
0
2
4
6
8
10 12 14 16 18 20
t – Time – ms
Figure 4
Figure 5
SHORT-CIRCUIT CURRENT, SWITCH
ENABLED INTO A SHORT
LDO TURNON DELAY AND RISE TIME
WITH 4.7-µF LOAD
V = 5 V
I
A
T
= 25°C
= 4.7 µF
= 13.2 Ω
C
R
L
L
V
I(EN)
(5 V/div)
V
I(LDO_EN)
(5 V/div)
V
O(LDO_OUT)
(1 V/div
I
O(OUT)
(100 mA/div)
0
1
2
3
4
5
6
7
8
9
10
0
0.4 0.8 1.2 1.6
t – Time – ms
2
2.4 2.8 3.2 3.6 4.2
t – Time – ms
Figure 6
Figure 7
9
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