Datasheet

ADP3330
–10–
REV. A
APPLICATION CIRCUITS
Crossover Switch
The circuit in Figure 24 shows how two ADP3330s can be used to
form a mixed supply voltage system. The output switches between
two different levels selected by an external digital input. Output
voltages can be any combination of voltages from the Ordering
Guide of the data sheet.
ADP3330-3.6
ADP3330-2.5
+
OUTIN
SD
GND
+
IN
OUT
SD
GND
C1
1.0mF
C2
0.47mF
V
OUT
= 3.6V/2.5VV
IN
= 3.85V TO 12V
OUTPUT SELECT
3V
0V
LOGIC SUPPLY
Figure 24.␣ Crossover Switch
Higher Output Current
The ADP3330 can source up to 200 mA at room temperature
without any heatsink or pass transistor. If higher current is
needed, an appropriate pass transistor can be used, as in Figure
25, to increase the output current to 1 A.
ADP3330-3
OUT
IN
SD
GND
+
V
IN
= 4.5V TO 8V
MJE253*
V
OUT
= 3V@1A
C1
100mF
C2
100mF
*AAVID531002 HEAT SINK IS USED
ERR
R1
50V
Figure 25.␣ High Output Current Linear Regulator