A_S-W25 & B_LS-W25 Series
0.25W, FIXED INPUT, ISOLATED & UNREGULATED
DUAL/SINGLE OUTPUT DC-DC CONVERTER
FEATURES
l
l
l
l
l
l
l
Small Footprint
1KVDC Isolation
SIP Package
Temperature Range: -40°C to +85°C
Low Temperature rise
No External Component Required
Industry Standard Pinout
Patent Protection
RoHS
SELECTION GUIDE
Input
Part
Number
*B0303LS-W25
A0505S- W25
*A0509S- W25
A0512S- W25
*A0515S- W25
B0505LS- W25
*B0509 LS- W25
B0512 LS- W25
B_LS-W25
Series
are
B0515 LS- W25
B0524LS-W25
*A1205S- W25
*A1209S- W25
*A1212S- W25
*A1215S- W25
*B1203 LS- W25
B1205 LS- W25
*B1209 LS- W25
B1212 LS- W25
*B1215 LS- W25
A2405S- W25
12
10.8-13.2
5
4.5-5.5
Voltage (VDC)
Nominal
3.3
Nominal
3.0-3.6
Voltage
(VDC)
3.3
±5
±9
±12
±15
5
9
12
15
24
±5
±9
±12
±15
3.3
5
9
12
15
±5
±9
±12
±15
24
21.6-26.4
5
9
12
15
24
Output
Current (mA)
Max
75.8
±25
±13.8
±10.4
±8.3
50
27.8
20.8
16.7
10.4
±25
±13.8
±10.4
±8.3
75.8
50
27.8
20.8
16.7
±25
±13.8
±10.4
±8.3
50
27.8
20.8
16.7
10.4
62
62
64
66
65
64
65
67
65
67
62
63
64
65
62
65
66
67
66
63
64
65
65
63
63
65
65
64
Efficiency
(%, Typ)
APPLICATIONS
The
A_S-W25
&
designed for application where isolated output is
required from a distributed power system.
These products apply to where:
1)
2)
3)
Input voltage variation
≤ ±10%;
1KVDC input and output isolation;
Regulated and low ripple noise is not
required.
Such as: digital circuits, low frequency analog
circuits, and IGBT power device driving circuits.
PART NUMBER SYSTEM
*A2409S- W25
*A2412S- W25
*A2415S- W25
B2405 LS- W25
*B2409 LS- W25
*B2412 LS- W25
*B2415 LS- W25
*B2424LS- W25
*
Designing.
B0505LS-W25
Rated Power
Package Sty le
Ou tput Volta ge
In put Voltage
Product Se ries
MORNSUN Science & Technology Co.,Ltd.
Address: No. 5, Kehui St. 1, Kehui development
center, Science Ave., Guangzhou Science City,
Luogang district, Guangzhou,P.R.China.
Tel: 86-20-28203030
Fax:86-20-38601272
Http://www.mornsun-power.com
COMMON SPECIFICATIONS
Item
Storage humidity
Operating Temperature
Storage Temperature
Temp. rise at full load
Lead temperature
Short circuit protection*
Cooling
Case material
MTBF
Weight
*
Supply voltage must be discontinued at the end of short circuit duration.
3500
2.1
1.5mm from case for 10 seconds
-40
-55
15
Test conditions
Min
Typ
Max
95
85
125
25
300
1
Free air convection
Plastic (UL94-V0)
K hours
g
s
°C
Unit
%
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice
A_S-W25 & B_LS-W25
A/4-2012
Page 1 of 2
ISOLATION SPECIFICATIONS
Item
Isolation voltage
Isolation resistance
Test conditions
Tested for 1 minute and 1 mA max
Test at 500VDC
Min
1000
1000
Typ
Max
Unit
VDC
MΩ
APPLICATION NOTE
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.
Min
(3.3V input)
(Others input)
(3.3V output)
(5V output)
(9V output)
(12V output)
(15V output)
(24V output)
12
10.5
8.3
6.8
6.3
5.0
Typ
Max
0.25
±1.5
±1.2
20
15
15
15
15
15
0.03
50
100
75
%/°C
mVp-p
KHz
%
Unit
W
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.
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 capacitor filtering network may be
connected to the input and output ends of the
DC/DC converter, see (Figure 1).
Dual O utput
Vin
Cin
OUTPUT SPECIFICATIONS
Item
Output power
Line regulation
For Vin change
of
±1%
Test conditions
Load regulation
10% to 100%
load
Output voltage accuracy
Temperature drift
Ripple & Noise*
Switching frequency
100% full load
20MHz Bandwidth
Full load, nominal input
See tolerance envelope graph
*Test ripple and noise by
“parallel
cable” method. See detailed operation instructions at Testing
of Power Converter section, application notes.
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 T
A
=25°C, humidity<75%, nominal input voltage and rated output
load unless otherwise specified.
3. See below recommended circuits for more details.
4. Dual output models unbalanced load:
±5%.
+Vo
C out
DC DC
GND
Single Output
Vin
Cin
Cout
0V
-Vo
+Vo
TYPICAL CHARACTERISTICS
DC DC
C out
GND
0V
(Figure 1)
It should also be noted that the capacitance of
filter capacitor must be proper. If the capacitance
is too big, a startup problem might arise.
Output Voltage Regulation and Over-voltage
Protection Circuit
The simplest device for output voltage
Operating Temp.(
o
C)
regulation,
over-voltage
and
over-current
OUTLINE DIMENSIONS & PIN CONNECTIONS
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT
DUAL OUTPUT
∅1.00
[0.039]
protection is a linear regulator and an capacitor
filtering network with overheat protection that is
connected to the input or output end in series
(Figure 2), linear regulator based on the actual
voltage and current required.
Dual Output
(F ront View )
1 2
10.10 [0.398]
4 5
6
4.10 [0.161]
0.50 [0.020]
0.50 [0.020]
SINGLE OUTPUT
Vin
2
4
6
REG
REG
+Vo
0V
1
19.60 [0.772]
DC DC
GND
Single Output
Vin
GND
12.40 [0 .488 ]
REG
-Vo
+Vo
(Bottom Vi ew )
0.90 [0.035]
1
2
4
5
6
0.30 6.00 [0.236]
[0.012]
10.16 [0.400]
Note: grid 2.54* 2.54m m .
TUBE OUTLINE DIMENSIONS
2.54 [0.100]
9.60
[0.378]
REG
REG
DC DC
0V
F O O T P R IN T D E TA ILS
P in
1
2
4
5
6
S i ngl e
Vin
G ND
0V
No P in
+ Vo
D ual
Vin
G ND
-Vo
0V
+ Vo
16.90 [0.665]
(Figure 2)
Cannot use in parallel and hot swap
4.90 [0.193]
Note:
Unit :mm[inch]
General tolerances:
±
0.50mm[± 0.020inch]
L=530mm[20.866inch] Tube Quantity: 25pcs
L=220mm[8.661inch] Tube Quantity: 10pcs
Short tube inner packaging dimensions: L*W*H=255*170*80mm;
Short tube outer packaging dimensions(with six inner packaging boxes):
L*W*H=375*280*270mm;
Long tube inner packaging dimensions: L*W*H=580*200*100mm;
Long tube outer packaging dimensions(with two inner packaging boxes)
：
L*W*H=600*215*220mm;
Long tube outer packaging dimensions(with three inner packaging boxes)
：
L*W*H=600*215*325mm.
Note:
Unit:m m [inch]
Pin section tolerances:± 0.10m m [± 0.004inc h]
General tolerances :± 0.25mm [± 0.010inch]
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice
A_S-W25 & B_LS-W25
A/4-2012
Page 2 of 2
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