ADM663A AD [Analog Devices], ADM663A Datasheet - Page 7

• Manufacturer Part Number: ADM663A
• Description: Tri-Mode: +3.3 V, +5 V, Adjustable Micropower Linear Voltage Regulators
• Manufacturer: AD [Analog Devices]

REV. 0
+85 C. The resistor value is calculated as R = 4/0.1 = 40 . A
resistor power rating of 400 mW or greater may be used.
Bypass Capacitors
The high frequency performance of the ADM663A/ADM666A
may be improved by decoupling the ouput using a filter capaci-
tor. A capacitor of 0.1 F is suitable.
Typical Performance Characteristics
Figure 10. Power Supply Rejection Ratio vs. Frequency
Figure 11. V
Output Current
80
60
40
20
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0.01
0
0
2
0.1
4
OUT1
6
1
Input-Output Differential vs.
FREQUENCY – Hz
V
IN
= +2V
8
I
OUT1
10
10
– mA
12
100
V
V
V
T
V
A
IN
IN
OUT
14
IN
= +25 C
DC = +9V
p-p = +2V
= +9V
DC = +5V
1000
T
16
A
V
= +25 C
IN
= +15V
18
10000
20
–7–
An input capacitor helps reduce noise, improves dynamic per-
formance and reduces the input dV/dt at the regulator input. A
suitable input capacitor is 0.1 F or greater.
Figure 12. Quiescent Current vs. Input Voltage
Figure 13. V
Output Current
12
10
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
8
6
4
2
0
0
2
0
V
4
IN
V
V
IN
= +9V
IN
10
= +15V
OUT2
= +2V
6
Input-Output Differential vs.
ADM663A/ADM666A
20
V
8
I
OUT2
IN
– Volts
– mA
10
30
12
V
V
OUT
OUT
T
T
A
A
40
= +25 C
= +25 C
= +3.3V
= +5V
14
16
50