A_S-1W & B_LS-1W Series
1W, FIXED INPUT, ISOLATED & UNREGULATED
DUAL/SINGLE OUTPUT DC-DC CONVERTER
RoHS
FEATURES
High Efficiency up to 80%
1KVDC Isolation
SIP Package
Internal SMD Construction
Temperature Range: -40°C to +85°C
No Heat sink Required
No External Component Required
Industry Standard Pinout
RoHS Compliance
PRODUCT PROGRAM
Input
Part
Number
B0303LS-1W
B0305LS-1W
A0505S-1W
A0509S-1W
A0512S-1W
A0515S-1W
B0505LS-W5
B0505LS-1W
B0509 LS-1W
B0512 LS-1W
B0515 LS-1W
A1205S-1W
A1209S-1W
A1212S-1W
A1215S-1W
B1203 LS-1W
B1205 LS-1W
B1209 LS-1W
B1212 LS-1W
B1215 LS-1W
A1505S-1W
B1515LS-1W
A2405S-1W
A2409S-1W
A2412S-1W
A2415S-1W
B2405 LS-1W
B2409 LS-1W
B2412 LS-1W
B2415 LS-1W
B2424LS-1W
Voltage (VDC)
Nominal
3.3
Range
3.0-3.6
Voltage
(VDC)
3.3
5
±5
±9
±12
±15
5
5
9
12
15
±5
±9
±12
±15
3.3
5
9
12
15
±5
15
±5
±9
±12
±15
5
9
12
15
24
Output
Current (mA)
Max
303
200
±100
±56
±42
±33
100
200
111
83
67
±100
±56
±42
±33
303
200
111
83
67
±100
67
±100
±56
±42
±33
200
111
83
67
42
Min
31
20
±10
±6
±5
±4
10
20
12
9
7
±10
±6
±5
±4
31
20
12
9
7
±10
7
±10
±6
±5
±4
20
12
9
7
4
72
74
72
77
79
80
68
70
78
78
80
72
78
79
78
73
71
76
78
79
72
75
73
79
80
80
73
78
78
79
78
Efficiency
(%, Typ)
Certificate
UL
UL
UL
UL
UL CE
UL CE
UL CE
UL CE
UL
UL
UL
UL
UL CE
UL CE
UL CE
UL CE
5
4.5-5.5
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.
12
10.8-13.2
15
13.5-16.5
24
21.6-26.4
UL
UL
UL
UL
UL CE
UL CE
UL CE
UL CE
MODEL SELECTION
A0505S-1W
P acka ge S tyl e
Ou tp ut Vo lta g e
Inpu t Volta ge
P rod uct S erie s
Note: The A_S-W2/B_LS-W2 series also are available in our company.
COMMON SPECIFICATIONS
Item
Operating Temp. Range
Storage Temp. Range
Storage humidity range
Cooling
Temp. rise at full load
Lead temperature
Isolation voltage
Isolation resistance
Short circuit protection*
Case material
MTBF
Weight
Test conditions
Max
Units
85
°C
125
95
%
Free air convection
15
25
°C
300
1000
VDC
1000
MΩ
1
s
Plastic (UL94-V0)
3500
K hours
2.1
G
Min
-40
-55
Typ
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
1.5mm from case for 10 seconds
Tested for 1 minute and 1 mA max
Test at 500VDC
*
Supply voltage must be discontinued at the end of short circuit duration.
MORNSUN reserves the copyright
Specifications subject to change without notice.
A_S-1W & B_LS-1W
A/1-2007
Page 1 of 2
OUTPUT SPECIFICATIONS
Item
Output power
Line regulation
Test conditions
For Vin change of 1%
(3.3 output)
(5V output)
(9V output)
(12V output)
(15V output)
Min
0.1
Max
Units
1
W
±1.2
12
20
10.5
15
%
8.3
15
6.8
15
6.3
15
See tolerance envelope graph
0.03
%/°C
50
75
75
100
mVp-p
100
150
100
150
100
KHz
Typ
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.
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).
Dual Output
L
L
Load regulation
10% to 100% load
Output voltage accuracy
Temperature drift
100% full load
(AXXXXS-1W)
(BXXXXLS-1W)
20MHz
Ripple & Noise
Bandwidth
(AXX24LS-1W)
(BXX24LS-1W)
Switching frequency Full load, nominal input
Vin
Cin
+Vo
Cout
DC DC
GND
Single Output
L
L Cout
0V
-Vo
Note:
1. All specifications measured at T
A
=25°C, humidity<75%, nominal input voltage and rated output load
unless otherwise specified.
2. Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing of Power
Converter section, application notes.
3. Dual output models unbalanced load:
±5%.
L
Vin
Cin
+Vo
Cout
DC DC
(Figure 1)
GND
0V
TYPICAL CHARACTERISTICS
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
Operating Temp.(
o
C)
sees (Table 1).
EXTERNAL CAPACITOR TABLE (TABLE 1)
Vin
Dual
Cout
Cin
Single Cout
Vout
(uF)
(uF)
(VDC)
(uF)
Vout
5
12
15
4.7
2.2
2.2
(VDC)
5
9
12
10
4.7
2.2
(VDC)
±
5
4.7
2.2
1
OUTLINE DIMENSIONS & PIN CONNECTIONS
First Angle Projection
(0.035)
(0.236)
RE COMMENDED FOOTPRINT
Top
view,grid:2.54*2.54mm(0.1 *0 .1inch),
diameter:1.00mm(0 .039inch)
Dua l Output
1 2
4 5 6
2.10
(0.083)
2.54
(0.100)
24
1
15
1
0.47
It’s not recommended to connect any external
capacitor in the application field with less than 0.5
watt output.
±
9
±
12
±
15
Sing le Output
(0.374)
1 2
4.10
4
6
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
FOOTPRINT DETAILS
(0.020)
overheat protection that is connected to the input
or output end in series (Figure 2).
Dual O u tput
Vn
i
GND
S ingle Output
R EG
REG
Note:
Unit:mm(inch)
P in section:0.50*0.30mm(0.020*0.012inch)
P in section tolerances: 0.10mm( 0.004inch)
General tolerance s: 0.2 5mm( 0.0 10inch)
P in
1
2
4
5
6
S ing le
Vin
GND
0V
No Pin
+Vo
Dua l
Vin
GND
-Vo
0V
+Vo
+Vout
0V
DC DC
REG
-Vout
APPLICATION NOTE
Requirement on output load
To ensure this module can operate efficiently and reliably, During operation, the minimum
output load is
not less than 10%
of the full load, and that
this product should never be
operated under no 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).
Vn
i
GND
R EG
REG
+Vout
DC DC
0V
(Figure 2)
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
A_S-1W & B_LS-1W
A/1-2007
Page 2 of 2
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