LM2703
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SNVS172F –FEBRUARY 2002–REVISED MAY 2013
Typical Performance Characteristics (continued)
FB Trip Point and FB Pin Current
Output Voltage
vs
Load Current
vs
Temperature
12.20
12.15
12.10
12.05
12.00
11.95
11.90
11.85
125
124
123
122
121
120
55
50
45
40
35
30
25
20
15
C
V
= 1uF
= 12V
OUT
OUT
V
V
= 4.2V
IN
V
= 2.5V
IN
V
= 3.3V
IN
nA
V
= 5V
IN
0.05 2
6
10 14 18 22 26 30 38 55 75
-40 -20
0
20 40 60 80 100 120
LOAD CURRENT (mA)
JUNCTION TEMPERATURE (°C)
Figure 11.
Figure 12.
Step Response
Start-Up/Shutdown
VOUT = 20V, VIN = 2.5V
1) SHDN, 1V/div, DC
2) IL, 200mA/div, DC
3) VOUT, 20V/div, DC
T = 400µs/div
VOUT = 20V, VIN = 2.5V
1) Load, 1mA to 10mA to 1mA, DC
2) VOUT, 200mV/div, AC
3) IL, 200mA/div, DC
T = 50µs/div
RL = 1.8kΩ
Figure 13.
Figure 14.
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