SI3122V SANKEN [Sanken electric], SI3122V Datasheet - Page 3

• Manufacturer Part Number: SI3122V
• Description: 3-Terminal, Low Dropout Voltage Dropper Type
• Manufacturer: SANKEN [Sanken electric]

64
Standard External Circuit
T
SI-3000V Series
a
-P
DC input
D
Characteristics
V
IN
C
1
24
20
16
12
8
4
0
–20
75 75 2 (7.6 C/W)
Without heatsink
200 200 2 (2.3 C/W)
100 100 2 (5.2 C/W)
Ambient Temperature T
0
3
SI-3000V
25
D
1
1
50
Without Mica
With Silicon Grease
Heatsink: Aluminum
Unit: mm
2
a
( C)
75
+
–
100
C
2
DC output
V
O
C
C
D
Note 1: Prevention of oscillation at low temperatures
Note 2: An isolation type diode is provided from input to ground
Note 3: The output voltage may not be adjusted by raising the
1
2
1
: Oscillation prevention capacitor (approx. 0.33 F)
: Output capacitor (47 to 100 F)
: Protection diode (RM1Z)
Connection to terminal No.3 must be made as short as
possible.
Connection to terminal No.2 must be made as short as
possible.
Required for protection against reverse biasing of input and
output.
At low temperatures, oscillation may occur unless an
output capacitor with good tan is used. Be sure to
connect a tantalum capacitor (approx. 10 F) in paral-
lel with output capacitor C
and also from output to ground. These may be de-
stroyed if the device is reverse biased. In this case,
use a diode with low V
ground voltage (using a diode or resistor).
F
to protect them.
2
.