1.9
2.0
2.1
2.2
2.3
2.4
2.5
0
10
20
30
40
50
INPUT VOLTAGE (V)
C
U
R
R
EN
T
(
A
)
85°C
SHORT CIRCUIT
ONSET
1.8
1.9
2.0
2.1
2.2
2.3
2.4
0
10
20
30
40
50
INPUT VOLTAGE (V)
C
U
R
R
EN
T
(A)
25°C
SHORT CIRCUIT
ONSET
1.8
1.9
2.0
2.1
2.2
2.3
2.4
0
5
10
15
20
25
INPUT VOLTAGE (V)
C
U
R
R
EN
T
(
A
)
25°C
SHORT CIRCUIT
ONSET
0
0.2
0.4
0.6
0.8
1
1.2
50
60
70
80
90
100
110
120
AMBIENT TEMPERATURE (C)
O
U
T
PU
T
C
U
R
R
EN
T
(
A
)
36V
IN
6V
IN
24V
IN
12V
IN
VOUT = 3.3V
Æ
JA = 19°C/W
20 mV/Div
200
P
s/Div
0.5 A/Div
SNVS649E – JANUARY 2010 – REVISED MARCH 2013
Typical Performance Characteristics (continued)
Unless otherwise specified, the following conditions apply: V
IN
= 24V; Cin = 10uF X7R Ceramic; C
O
= 100uF X7R Ceramic;
Tambient = 25 C for efficiency curves and waveforms.
Output Ripple
Transient Response
24V
IN
3.3V
O
1A, BW = 200 MHz
24V
IN
3.3V
O
0.5A to 1A Step
Figure 27.
Figure 28.
Thermal Derating V
OUT
= 3.3V
Current Limit 1.8V
OUT
@ 25°C
Figure 29.
Figure 30.
Current Limit 3.3V
OUT
@ 25°C
Current Limit 3.3V
OUT
@ 85°C
Figure 31.
Figure 32.
10
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