Datasheet

-55C
3
3.5
4
4.5
5
0 5 10 15 20 25
INPUT VOLTAGE (V)
OUTPUT CURRENT (A)
ONSET
SHORT CIRCUIT
ONSET
3
3.5
4
4.5
5
0 5 10 15 20 25
INPUT VOLTAGE (V)
OUTPUT CURRENT (A)
25°C
SHORT CIRCUIT
4.5V
IN
0
0.5
1
1.5
2
2.5
3
3.5
50 60 70 80 90 100 110 120
AMBIENT TEMPERATURE (°C)
OUTPUT CURRENT (A)
V
OUT
= 1.8V

JA
= 19.6°C/W
4.5V
IN
20V
IN
12V
IN
1.79
1.80
1.81
0
0.5
1
1.5
2 2.5 3
OUTPUT CURRENT (A)
OUTPUT VOLTAGE (V)
4.5
5
6
8
12
15
20
-55°C
5.5
LMZ12003EXT
SNVS663G –JUNE 2010–REVISED OCTOBER 2013 www.ti.com
Typical Performance Characteristics (continued)
Unless otherwise specified, the following conditions apply: V
IN
= 12V; Cin = 10uF X7R Ceramic; C
O
= 100uF X7R Ceramic;
Tambient = 25 C for efficiency curves and waveforms.
Output Ripple
Line and Load Regulation @ –55°C 12V
IN
3.3V
O
3A 20mV/div 1μSec/div
Figure . Figure 18.
Transient Response
12V
IN
3.3V
O
0.6A to 3A Step Thermal Derating V
OUT
= 1.8V
Figure 19. Figure 20.
Current Limit 1.8V
OUT
@ 25°C Current Limit 1.8V
OUT
@ 85°C
Figure 21. Figure 22.
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