A_D-1W & B_LD-1W Series
1W, FIXED INPUT, ISOLATED & UNREGULATED
DUAL/SINGLE OUTPUT DC-DC CONVERTER
FEATURES
High Efficiency up to 80%
1KVDC Isolation
DIP Package
Internal SMD Construction
Temperature Range: -40°C ~ +85°C
No Heat sink Required
No External Component Required
Industry Standard Pinout
RoHS Compliance
RoHS
S
PRODUCT PROGRAM
Input
Part
Number
B0303LD-1W
B0305LD-1W
A0505D-1W
A0509D-1W
A0512D-1W
A0515D-1W
B0505LD-W5
B0505LD-1W
B0509 LD-1W
B0512 LD-1W
B0515 LD-1W
A1205D-1W
A1209D-1W
A1212D-1W
A1215D-1W
B1203 LD-1W
B1205 LD-1W
B1209 LD-1W
B1212 LD-1W
B1215 LD-1W
A1505D-1W
B1515LD-1W
A2405D-1W
A2409D-1W
A2412D-1W
A2415D-1W
B2405 LD-1W
B2409 LD-1W
B2412 LD-1W
B2415 LD-1W
B2424LD-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
Certificate
(%, Typ)
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_D-1W
&
B_LD-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
MODEL SELECTION
A0505D-1W
Rated Power
Package Style
Output Voltage
Input Voltage
Product Series
UL
UL
UL
UL
UL CE
UL CE
UL CE
UL CE
Note: The A_D-W 25/B_LD-W25 series also are available in our company.
COMMON SPECIFICATIONS
Item
Operating Temp.
Storage Temp. Range
Storage humidity
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, Huangzhou
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_D-1W & B_LD-1W
A/2-2008
Page 1 of 2
OUTPUT SPECIFICATIONS
Item
Output power
Line regulation
Test conditions
For Vin change
of 1%
(3.3V output)
(Other output)
(3.3V output)
(5V output)
(9V output)
(12V output)
(15V output)
Min
0.1
Max
Units
1
W
±1.5
±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
mVp-p
75
100
100
150
100
KHz
Typ
Overload Protection
Under
output
protection
normal
circuit
of
against
operating
these
overload.
conditions,
has
The
the
no
products
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
Load regulation
10% to 100%
load
decrease
the
Output voltage accuracy
Temperature drift
100% full load
(AXXXXD-1W)
20MHz
Ripple & Noise*
(BXXXXD-1W)
Bandwidth
(A/BXX24D-1W)
Switching frequency Full load, nominal input
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
Vin
Cin
+Vo
Cout
*Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing of Power
Converter section, application notes.
Note:
1.All specifications measured at T
A
=25°C, humidity<75%, nominal input voltage and rated output load
unless otherwise specified.
2.Dual output models unbalanced load:
±5%.
DC DC
GND
Single Output
L
L Cout
0V
-Vo
L
Vin
Cin
+Vo
DC DC
(Figure 1)
Cout
GND
TYPICAL CHARACTERISTICS
0V
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
Operating Temp.( C)
o
filter capacitor sees (Table 1).
EXTERNAL CAPACITOR TABLE (TABLE 1)
OUTLINE DIMENSIONS & PIN CONNECTIONS
First Angle Projection
RECO MMENDED FOOTPRINT
Top
view,grid:2.54mm(0.1inch)
diameter:1.00mm(0.039inch)
Dual Output
Vin
(VDC)
5
12
15
24
Cin
(uF)
4.7
2.2
2.2
1
Single
Cout
Vout
(uF)
(VDC)
5
10
9
4.7
12
2.2
15
1
Dual
Cout
Vout
(uF)
(VDC)
±5
4.7
±9
2.2
±12
1
±15
0.47
14
1
11
9 8
7
It’s not recommended to connect any external
capacitor in the application field with less than 0.5
watt output.
Single Output
14
1
14
11
7
1
9 8
FO OTPRINT DETAILS
Pin
1
Note:
Unit:mm(inch)
Pin section:0.50*0.30mm( 0.020*0.012inch)
Pin tolerances: 0.10mm( 0.004inch)
General tolerances: 0.25mm( 0.010inch)
8
9
11
Single
GND
NC
0V
+Vo
No Pin
Vin
Dual
GND
NC
0V
+Vo
-Vo
Vin
7
9 8
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).
D ual Output
Vin
GND
Single Output
Vin
GND
REG
REG
REG
REG
+Vout
0V
DC DC
REG
-Vout
+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_D -W25/B_LD-W25 series)
DC DC
0V
(Figure 2)
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
A_D-1W & B_LD-1W
A/2-2008
Page 2 of 2
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