A_S-1W & B_LS-1W Series
1W, FIXED INPUT, ISOLATED & UNREGULATED
DUAL/SINGLE OUTPUT DC-DC CONVERTER
FEATURES
●
High efficiency up to 80%
●
1KVDC isolation
●
SIP package
●
Internal SMD construction
●
Temperature range: -40°C ~ +85°C
●
No heat sink required
●
No external component required
●
Industry standard pinout
●
RoHS Compliance
RoHS
Output
Voltage
(VDC)
3.3
5
±5
±9
±12
±15
±24
3.3
5
5
9
12
15
24
±5
±9
±12
±15
3.3
5
9
12
15
24
±5
±12
±15
5
12
15
±5
±9
±12
±15
±24
5
9
12
15
24
Current (mA)
Max.
303
200
±100
±56
±42
±33
±21
303
100
200
111
83
67
42
±100
±56
±42
±33
303
200
111
83
67
42
±100
±42
±33
200
83
67
±100
±56
±42
±33
±21
200
111
83
67
42
Min.
31
20
±10
±6
±5
±4
±3
31
10
20
12
9
7
4
±10
±6
±5
±4
31
20
12
9
7
4
±10
±5
±4
20
9
7
±10
±6
±5
±4
±3
20
12
9
7
4
72
74
72
77
79
80
82
72
68
70
78
78
80
81
72
78
79
78
74
71
76
78
79
84
72
76
79
72
76
75
73
79
80
80
81
73
78
78
79
78
UL CE
UL CE
UL CE
UL CE
UL
UL
UL
UL
UL CE
UL CE
UL CE
UL CE
UL
UL
UL
UL
UL CE
UL CE
UL CE
UL CE
UL
UL
UL
UL
Efficiency
Certificate
(%, Typ.)
PRODUCT PROGRAM
Input
Part
Number
B0303LS-1W
B0305LS-1W
A0505S-1W
A0509S-1W
A0512S-1W
A0515S-1W
A0524S-1W
B0503LS-1W
B0505LS-W5
5
4.5-5.5
Voltage (VDC)
Nominal
3.3
Range
3.0-3.6
APPLICATIONS
The A_S-1W & B_LS-1W series are
specially designed for applications where a
group of polar power supplies are isolated
from the input power supply in a distributed
power supply system on a circuit board.
These products apply to:
1) Where the voltage of the input power
supply is fixed (voltage variation
≤
±10%);
2) Where isolation is necessary between
input
and
output
(isolation voltage
≤1000VDC);
3) Where the regulation of the output
voltage and the output ripple noise are
not demanding.
Such as: purely digital circuits, ordinary low
frequency analog circuits, and IGBT power
device driving circuits.
B0505LS-1W
B0509LS-1W
B0512LS-1W
B0515LS-1W
B0524LS-1W
A1205S-1W
A1209S-1W
A1212S-1W
A1215S-1W
B1203LS-1W
B1205LS-1W
B1209LS-1W
B1212LS-1W
B1215LS-1W
B1224LS-1W
A1505S-1W
A1512S-1W
A1515S-1W
B1505LS-1W
B1512LS-1W
B1515LS-1W
A2405S-1W
A2409S-1W
A2412S-1W
A2415S-1W
A2424S-1W
B2405LS-1W
B2409LS-1W
B2412LS-1W
B2415LS-1W
B2415LS-1W
24
21.6-26.4
15
13.5-16.5
12
10.8-13.2
MODEL SELECTION
A0505S-1W
MORNSUN Science & Technology Co.,Ltd.
Address:
2th floor 6th building, Hangzhou
Industrial District, Guangzhou, China
Tel: 86-20-38601850
Fax: 86-20-38601272
http://www.mornsun-power.com
Note: The A_S-W2/B_LS-W2 series also are available in our company.
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
A_S-1W & B_LS-1W
A/3-2010
Page 1 of 3
ISOLATION SPECIFICATIONS
Item
Isolation voltage
Test conditions
Min.
1000
Typ.
Max.
Units
VDC
MΩ
Tested for 1 minute and 1 mA max 1000
TYPICAL CHARACTERISTICS
Tolerance Envelope Graph
+10%
+5%
Nominal
Voltage
Output Voltage
Ty p ic
a
l Lo a
d
L i ne
Isolation resistance Test at 500VDC
+2.5%
-2.5%
-7.5%
COMMON SPECIFICATIONS
Item
Storage humidity range
Operating temperature
Storage temperature
Temp. rise at full load
Lead temperature
Short circuit protection*
Cooling
Case material
MTBF
Weight
Test conditions
Min.
-40
-55
Typ.
Max.
95
85
125
Units
%
10%
15
1.5mm from case for 10 seconds
25
300
1
°C
50%
100%
Output Current %)
(
Temperature Derating Graph
S
Output Power(%)
120
100
80
60
40
20
0
-40
0
40
85 105
Ambient Temperature
( C)
Safe Operating Area
Free air convection
Plastic (UL94-V0)
3500
2.1
K hours
g
*
Supply voltage must be discontinued at the end of short circuit duration.
OUTPUT SPECIFICATIONS
Item
Output power
Line regulation
For Vin change of 1%
(3.3 output)
(5V output)
Load regulation
10% to 100% load
(9V output)
(12V output)
(15V output)
(24V output)
Output voltage accuracy
Temperature drift
100% full load
(AXXXXS-1W)
Ripple & Noise
20MHz
Bandwidth
(BXXXXLS-1W)
(AXX24LS-1W)
(BXX24LS-1W)
Switching frequency Full load, nominal input
50
75
100
100
100
12
10.5
8.3
6.8
6.3
5
Test conditions
Min.
0.1
Typ.
Max.
1
±1.2
20
15
15
15
15
15
0.03
75
100
150
150
KHz
mVp-p
%/°C
%
Units
W
RECOMMENDED CIRCUIT
Dual Output
L
L
Vin
Cin
+Vo
Cout
DC DC
GND
Single Output
L
L Cout
0V
-Vo
L
Vin
Cin
+Vo
Cout
DC DC
(Figure 1)
GND
0V
See tolerance envelope graph
Dual O u tput
Vn
i
GND
S ingle Output
Vn
i
GND
R EG
R EG
REG
+Vout
0V
DC DC
REG
-Vout
REG
+Vout
*Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing of Power
Converter section, application notes.
Note: Dual output models unbalanced load:
±5%.
DC DC
0V
(Figure 2)
EXTERNAL CAPACITOR TABLE (TABLE 1)
Vin
Cin Single Cout Dual Cout
(VDC) (uF)
Vout
Vout (uF)
(uF)
(VDC)
(VDC)
3.3/5
4.7
3.3/5
10
±5
4.7
12
15
24
2.2
2.2
1
9
12
15
4.7
2.2
1
±9
±12
±15
2.2
1
0.47
APPLICATION NOTE
1) Requirement on output load
To ensure this module can operate efficiently and reliably, During operation, the minimum
output load
could not be less than 10% of the full load.
If the actual output power is very
small, please connect a resistor with proper resistance at the output end in parallel to
increase the load, or use our company’s products with a lower rated output power (A_S
-W2/B_LS-W2 series).
2) Overload Protection
Under normal operating conditions, the output circuit of these products has no protection
against overload. The simplest method is to connect a self-recovery fuse in series at the
input end or add a circuit breaker to the circuit.
3) Recommended circuit
If you want to further decrease the input/output ripple, an
“LC”
filtering network may be
connected to the input and output ends of the DC/DC converter, see (Figure 1).
It should also be noted that the inductance and the frequency of the
“LC”
filtering network
should be staggered with the DC/DC frequency to avoid mutual interference. However, the
capacitance of the output filter capacitor must be proper. If the capacitance is too big, a
startup problem might arise. For every channel of output, provided the safe and reliable
operation is ensured, the recommended capacitance of its filter capacitor sees (Table 1).
4) Output Voltage Regulation and Over-voltage Protection Circuit
The simplest device for output voltage regulation, over-voltage and over-current
protection is a linear voltage regulator with overheat protection that is connected to the
input or output end in series (Figure 2).
5) No parallel connection or plug and play
The copyright and authority for the interpretation of the products are reserved by MORNSUN
-
-
24
1
±24
0.47
It’s not recommended to connect any external
capacitor in the application field with less than 0.5
watt output.
Specifications subject to change without notice.
A_S-1W & B_LS-1W
A/3-2010
Page 2 of 3
OUTLINE DIMENSIONS & PIN CONNECTIONS
MECHANICAL DIMENSIONS
19.60 [0.772]
6.00 [0.236]
RECOMMENDED FOOTPRINT
DUAL OUTPUT
∅1.00
[0.039]
1 2
4 5
6
2.54 [0.100]
2.54 [0.100]
(Side View)
10.00 [0.394]
SINGLE OUTPUT
4.10 [0.161]
0.50 [0.020]
2.00 [0.079]
1 2
4
6
TUBE OUTLINE DIMENSIONS
1
0.90 [0.035]
(Bottom View)
2
4 5 6
0.50[0.020]
0.30 [0.012]
2.54 [0.100]
9.70 [0.382]
Note:
Unit:m m[inch]
P in section tolerances: 0.10m m[ 0.004inch]
General tolerances: 0.25m m [ 0.010inch]
FOOTPRINT DE TA ILS
Pin
1
2
4
5
6
S ingle
Vin
GND
0V
No Pin
+ Vo
Dual
Vin
GND
-Vo
0V
+ Vo
12.50 [0.492]
17.00 [0.669]
0.79 [0.031]
5.00 [0.197]
Note:
Unit :mm[inch]
General tolerances: 0.50mm[
0.020inch]
L=530mm[20.866inch] Tube Quantity: 25pcs
L=220mm[8.661inch]
Tube Quantity: 10pcs
Note:
1. Operation under minimum load will not damage the converter; However, they may not meet all specification listed, and that will reduce the
life of product.
2. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
3. In this datasheet, all the test methods of indications are based on corporate standards.
4. Only typical models listed, other models may be different, please contact our technical person for more details.
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
A_S-1W & B_LS-1W
A/3-2010
Page 3 of 3
Microcontroller MCU
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