STR20000 Datasheet, PDF (1/2 Pages) Sanken electric – Switching Type(Chopper Self Oscillation Type)

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