Datasheet

TPS72201, TPS72215
TPS72216, TPS72218
SLVS390B – DECEMBER 2001 – REVISED MAY 2002
www.ti.com
6
TYPICAL CHARACTERISTICS
Fi
g
ure 10
TPS72218
LINE TRANSIENT RESPONSE
V
I
t – Time – ms
0 0.30.20.1 0.4 0.5 0.70.6 0.8 0.9 1
– Input Voltage – VV
O
– Output Voltage –V
0
-1
2.8
1
3.8
I
O
= 50 mA
C
o
= 1 µF
dV
I
dt
+
0.4 V
µs
V
I
V
O
Figure 11
100
t – Time – µs
TPS72218
LOAD TRANSIENT RESPONSE
50
0 15050 200 250 350300 400 450
0
V
O
Output Voltage – mV
∆
– Change In
–100
500
– Output Current – mA
I
O
V
I
= 2.8 V
C
o
= 1 µF
0
dI
O
dt
+
0.1A
µs
100
Figure 12
Power Up / Power Down – V
POWER UP / POWER DOWN
V
I
V
O
C
o
= 1 µF
C
i
= 1 µF
R
L
= 36 Ω
0
1
2
3
4
5
6
t – Time – ms
0302010 40 50 7060 80 90 100
Fi
g
ure 13
0
10
20
30
40
50
60
70
80
0 5 10 15 20 25 30 35 40 45 50
DC DROPOUT VOLTAGE
vs
OUTPUT CURRENT
I
O
– Output Current – mA
T
J
= 125°C
T
J
= 25°C
T
J
= –55°C
DC Dropout Voltage – mV
Figure 14
0
10
20
30
40
50
60
70
80
1.8 2.5 3.3 4.0 4.8 5.5
TPS72201
DROPOUT VOLTAGE
vs
INPUT VOLTAGE
V
I
– Input Voltage – V
– Dropout Voltage – mV
V
DO
T
J
= 25°C
T
J
= –40°C
T
J
= 125°C
I
O
= 50 mA
Figure 15
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
T
J
= 25°C
I
O
= 50 mA
– Minimum Required Input Voltage – V
MINIMUM REQUIRED INPUT VOLTAGE
vs
OUTPUT VOLTAGE
V
O
– Output Voltage – V
V
I
T
J
= 125°C
T
J
= –40°C