AP432 Advanced Power Electronics Corp., AP432 Datasheet - Page 5

• Manufacturer Part Number: AP432
• Manufacturer: Advanced Power Electronics Corp.

Specifications of AP432

• Vref: 1.24
• Cathode Voltage: 20
• Continuous Cathode Current: 250
• Accuracy: 0.5%, 1%
• Minimum Cathode Current For Regulation Typ.: 0.15
• Package: SOP8,SOT89,TO92,SOT23,SOT23-5

Adjustable Precision Shunt Regulator
Advanced Power Electronics Corp.
www.a-power.com.tw
Typical Performance Characteristics
Advanced Power
Electronics Corp.
SMALL-SIGNAL VOLTAGE AMPLIFICATION vs. FREQUENCY
100
0.1
10
60
50
40
30
20
10
1
0
REFERENCE IMPEDANCE vs. FREQUENCY
1K
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
1K
L
100
were then adjusted to determine the ranges of stability.
I
T
KA
90
80
70
60
50
40
30
20
10
A
0
=10mA
=25
0.001
o
C
A V
B V
C V
D V
STABILITY BOUNDARY CONDITIONS
KA
KA
KA
KA
10K
=V
10K
=5V
=10V
=15V
ref
Stable
0.01
C
f-Frequency-Hz
f-Frequency-Hz
KA
L
A
-Load Capacitance-µF
and I
100K
100K
KA
B
0.1
conditions with C
D
C
1M
1M
1
I
T
KA
Stable
A
TA=25
L
=25
=10mA
†
=0.V
o
C
BATT
o
C
10M
10M
10
and
TEST CIRCUIT FOR VOLTAGE AMPLIFICATION
TEST CIRCUIT FOR REFERENCE IMPEDANCE
TEST CIRCUIT FOR CURVE B, C, AND D
TEST CIRCUIT FOR CURVE A
9µF
C
C
L
L
R2
-
50Ω
8.25KΩ
15KΩ
R1=10KO
1KΩ
I KA
150O
+
-
+
I
-
KA
I KA
+
-
I KA
V
+
-
BATT
232Ω
Output
GND
150O
V
BATT
GND
Output
AP432
5