STR20000 Series
Switching Type
Chopper • Self Oscillation Type
Features
q
q
q
q
q
Requires only 4 external components
Small size and high efficiency
Low switching noise
Variable output voltage
Use of Sanken semiconductors components ensures
high reliability
Applications
q For power supplies in office equipment such as
electronic typewriters, printers and copiers
q For power supplies in VCRs, personal CB radios
(fixed stations), etc.
External View
s Absolute Maximum Ratings (Ta=25°C)
Parameter
Ratings
Symbol
Unit
STR20005
DC Input Voltage
VIN
45
V
DC Output Current
IO
2.0 (pulse 3.0)
A
Power Dissipation
PD
Operating Temperature
Top
–20 to +100
°C
Storage Temperature
Tstg
–20 to +125
°C
Rth(j-c)
1.8
°C/W
Thermal Resistance (junction-to-case)
55 (TC=25°C)
W
13 (TC=100°C)
s Electrical Characteristics (Ta=25°C)
Ratings
Parameter
Symbol
STR20005
min
DC Input Voltage Range
Output Voltage
Efficiency
Line Regulation
Load Regulation
Ripple Rejection
Switching Frequency
12
VIN
8
Condition
VO
Condition
η
Condition
typ
IO=1.0A
5.0
5.1
72
50
VIN=15 to 25V, IO=1.0A
100
VIN=20V, IO=0.5 to 1.5A
45
Condition
f=100 to 120Hz
f
30
VIN=20V, IO=1.0A
V
V
%
VIN=20V, IO=1.0A
RREJ
Condition
5.2
VIN=20V, IO=1.0A
∆VOLOAD
Condition
max
40
∆VOLINE
Condition
Unit
mV
mV
dB
kHz
