AP431Q DIODES [Diodes Incorporated], AP431Q Datasheet - Page 9

• Manufacturer Part Number: AP431Q
• Description: ADJUSTABLE PRECISION SHUNT REGULATOR
• Manufacturer: DIODES [Diodes Incorporated]

Typical Performance Characteristics
AP431/AP431A Rev. 5
The areas under the curves represent conditions that may cause the
device to oscillate. For curves B, C, and D, R2 and V+ were adjusted
to establish the initial V
C
6
5
4
3
2
1
0
L
-1
were then adjusted to determine the ranges of stability.
100
90
80
70
60
50
40
30
20
10
0
0.001
T
A
=25
A V
B V
C V
D V
0
o
STABILITY BOUNDARY CONDITIONS
C
KA
KA
KA
KA
=V
=5V
=10V
=15V
ref
1
Stable
0.01
Pulse Response
C
L
KA
A
-Load Capacitance-µF
2
Output
Input
and I
t-Time-µS
3
B
0.1
KA
conditions with C
D
C
4
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1
5
9 of 14
Stable
ADJUSTABLE PRECISION SHUNT REGULATOR
TA=25
†
L
6
=0.V
o
C
10
BATT
( Continued )
7
and
Generator
f=100kHz
Pulse
Test Circuit for Pulse Response
C
C
L
L
AP431/AP431A
Test Circuit for Curve A
Test Circuit for Curve B, C, and D
R2
50Ω
220Ω
R1=10KΩ
I KA
150Ω
©
+
-
Diodes Incorporated
I KA
MARCH 2007
V
+
-
BATT
Output
GND
150Ω
V
BATT