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FDD25-03SX View Datasheet(PDF) - CHINFA ELECTRONICS

Part Name
Description
View to exact match
FDD25-03SX Datasheet PDF : 4 Pages
1 2 3 4
PHYSICAL CHARACTERISTICS
Case size
Case material
Weight
Patting material
50.8 x 50.8 x 12.0 mm (2 x 2 x 0.47 inches)
Plastic base / Metal case
70 g
Epoxy
MECHANISM & PIN CONFIGURATION
mm [inch]
FDD25 SERIES
SINGLE & DUAL OUTPUT
45.72 [1.80]
2.54 [0.10]
12.00 [0.47]
6.00 [0.24]
22.86 [0.90]
1
5.08 [0.20]
2
10.16 [0.40]
4
DIA 1.00 [0.04]
10.16 [0.40]
5
10.16 [0.40]
6
10.16 [0.40]
7
10.16 [0.40]
8
10.16 [0.40]
GENERAL TOLERANCE
0.00[0.00] - 30.00[1.18]
±0.30[0.01]
30.00[1.18] - 120.00[4.72]
±0.50[0.02]
50.80 [2.00]
BOTTOM VIEW
PIN ASSIGNMENT
GENERAL
PIN NO.
1
2
4
5
6
7
8
SINGLE
Vi+
Vi -
ON/OFF
NO PIN
Vo +
Vo -
Trim
DUAL
Vi+
Vi -
ON/OFF
Vo +
com
Vo -
Trim
CIRCUIT SCHEMATIC
Block diagram for FDD25 series with single output
Vi +
Switching
Device
Rectifier
Vi -
ON / OFF
PWM
Controller
Opto -
Isolation
Reference &
Error Amp.
Block diagram for FDD25 series with dual output
Vo +
Vi +
Vo -
Vi -
Trim
ON / OFF
Switching
Device
PWM
Controller
Rectifier
Rectifier
Opto -
Isolation
Reference &
Error Amp.
Vo +
com
Vo -
Trim
RECOMMENDED CIRCUIT
Recommended filter for EN55022 Class B compliance
L1
+
C1
-
Vin +
Vo +
C2
FDD25
Vin -
Vo -
C3
www.chinfa.com
2010.02.09
The commponents used in the above figure, together with the
manufacturer part numbers for these components, are as follows.
C1
C2
C3
FDD25-XXX1 4.7μF / 50V 4.7μF / 50V InF / 2KV
MLCC
MLCC
MLCC
3.3μF / 50V 3.3μF / 50V
FDD25-XXX2 MLCC
MLCC
InF / 2KV
MLCC
FDD25-XXX3 3.3μF / 100V 3.3μF / 100V InF / 2KV
MLCC
MLCC
MLCC
L1
1.5mH
Common
Choke
1.5mH
Common
Choke
1.5mH
Common
Choke
sales@chinfa.com
P3
 

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