SANKEN STR2024

STR2000 Series
Switching Type
Chopper • Self Oscillation Type
Features
●
●
●
●
●
Requires only 3 external components
Small size and high efficiency
Low switching noise
Variable output voltage
Use of SANKEN's semiconductor elements ensures
high reliability
Applications
● For power supplies in office equipment such as
electronic typewriters, printers, and copiers
● For power supplies in VCRs and personal CB radios
(fixed station)
External View
■ Absolute Maximum Ratings (Ta=25°C)
Parameter
Ratings
Symbol
Unit
STR2005 STR2012 STR2013 STR2015 STR2024
DC Input Voltage
VIN
45
DC Output Current
IO
2.0 (pulse 3.0)
Power Dissipation
50
V
A
75 (TC=25°C)
PD
W
15 (TC=100°C)
Operating Temperature
Top
–20 to +100
°C
Storage Temperature
Tstg
–20 to +125
°C
Rth(j-c)
1.25
°C/W
Thermal Resistance ( junction-to-case)
■ Electrical Characteristics (Ta=25°C)
Ratings
Parameter
Symbol
STR2005
min
DC Input Voltage Range
VIN
STR2012
typ max min typ
11
40
18
max min
45
Condition
Output Voltage
VO
η
5.0
5.1
72
∆VOLINE
∆VOLOAD
RREJ
f
45
45
45
85
VIN=24V, IO=1.0A
60
21
Unit
typ max
30
50
100
VIN=35V, IO=1.0A
85
85
VIN=27V, IO=1.0A
VIN=35V, IO=1.0A
60
60
V
45
V
%
mV
VIN=23 to 31V, IO=1.0A VIN=30 to 40V, IO=1.0A
100
VIN=24V, IO=0.5 to 1.5A
45
VIN=27V, IO=1.0A
60
VIN=20 to 28V, IO=1.0A
100
Condition
Switching Frequency
typ max min
VIN=24V, IO=1.0A
50
Condition VIN=20V, IO=0.5 to 1.5A
Ripple Rejection
typ max min
19
85
Condition VIN=15 to 25V, IO=1.0A
Load Regulation
STR2024
5.2 11.8 12.0 12.2 12.8 13.0 13.2 14.8 15.0 15.2 23.7 24.0 24.3
Condition VIN=20V, IO=1.0A
Line Regulation
STR2015
IO=1.0A
Condition VIN=20V, IO=1.0A
Efficiency
STR2013
100
100
mV
VIN=27V, IO=0.5 to 1.5A VIN=35V, IO=0.5 to 1.5A
45
45
25
25
dB
f=100 to 120Hz
25
Condition V IN=20V, I O=1.0A
25
25
V IN =24V, I O=1.0A
kHz
VIN=27V, IO=1.0A VIN=35V, IO =1.0A
9
STR2000 Series
■ Outline Drawing/Terminal Connections (unit:mm)
2.0±0.2
21.2±0.3
4.7max.
Type
2.0
+0.2
Terminal Connections
q
w
e
r
t
3.0
20.0min.
12.0±0.3
Lot Number
Plastic Mold Package Type
Flammability: UL94V-0
φ 3.2±0.1
6.0max.
24.4±0.2
3 0°
36.0±0.3
+0.2
0.6 –0.1
1.0 –0.1
q
3.5
w
e
r
t
5.45×4
5.45
Switching Output (backside of case)
Output Voltage Adjustment
Ground
Output Voltage Detection
Input
Weight: Approx. 14.5g
■ Ta-PD Characteristics
■ Block Diagram
Tr1
5
Without Mica
150×150×2(3.3°C/W) With Silicone Grease
Heatsink: Aluminum
Unit: mm
24
1
R1
Power Dissipation PD(W)
Ref. Voltage Circuit
D1
R2
R3
M1
4
Tr2
R5
R4
R7
R6
2
C1
20
16
100×100×2(5.2°C/W)
12
75×75×2(7.6°C/W)
8
R8
C2
Without heatsink
4
3
0
–20
L
Vout
1
5
4
DC Input
100
■ Variable Output Voltage Circuit
■ Standard External Circuit
VIN
60
80
20
40
Ambient Temperature Ta(°C)
0
3
DC Output
+
L
VIN
+
1000µF
1000µF
–
4
DC Input
VOUT
1
5
3
2
DC Output
VR1
+
GND
GND
–
+
1000
µF
1000
µF
VR2
GND
Type
STR2005
STR2012
STR2013
STR2015
STR2024
10
Inductance L
200µH
300µH
300µH
350µH
400µH
GND
VR1 : VOUT down
VR2 : VOUT up
STR2000 Series Typical Characteristics (Ta=25°C)
■ STR2005
Rise Characteristics
Efficiency Characteristics
10
100
90
VIN=11V
20V
80
6
Efficiency η (%)
Output Voltage VO (V)
8
IO=0A
1A, 2A
4
70
60
30V
40V
50
40
2
30
0
0
2
4
6
8
10
12
14
16
18
0
20
0
0.5
Input Voltage VIN (V)
1.0
1.5
2.0
2.5
Output Current IO (A)
■ STR2012
Rise Characteristics
Efficiency Characteristics
20
100
IO=0A, 1A
2A
Efficiency η (%)
Output Voltage VO (V)
90
15
10
80
VIN=18V
24V
30V
35V
45V 40V
70
60
50
5
40
0
0
5
10
15
20
25
30
35
40
0
45
0
Input Voltage VIN (V)
0.5
1.0
1.5
2.0
2.5
Output Current IO (A)
■ STR2024
Rise Characteristics
Efficiency Characteristics
30
100
IO=0A, 1A
2A
90
Efficiency η (%)
Output Voltage VO (V)
25
20
15
10
80
VIN=30V
35V
40V
45V
50V
70
60
50
5
0
40
0
5
10
15
20
25
30
Input Voltage VIN (V)
35
40
45
0
0
0.5
1.0
1.5
2.0
2.5
Output Current IO (A)
11