A-XM-1W
＆
B-XLM-1W
Series
1W, FIXED INPUT, ISOLATED & UNREGULATED DUAL/SINGLE OUTPUT,SUPERMINIATURE SIP PACKAGE
SELECTION GUIDE
Input
Order code
Voltage(VDC)
Output
Range
Voltage
(VDC)
Current
Max
Min
Nominal
Efficiency
(%,Typ)
Switching
Frequency
(KHz,Typ)
A0505XM-1W
5
5
5
5
12
12
12
12
5
5
5
5
12
12
12
12
24
24
24
24
24
4.5-5.5
4.5-5.5
4.5-5.5
4.5-5.5
10.8-13
10.8-13
10.8-13
10.8-13
4.5-5.5
4.5-5.5
4.5-5.5
4.5-5.5
10.8-13
10.8-13
10.8-13
10.8-13
21.6-26
21.6-26
21.6-26
21.6-26
21.6-26
±5
±9
±12
±15
±5
±9
±12
±15
5
9
12
15
5
9
12
15
5
9
12
15
24
±100
±56
±42
±33
±100
±56
±42
±33
200
111
83
67
200
111
83
67
200
111
83
67
42
±10
±6
±5
±4
±10
±6
±5
±4
20
12
9
7
20
12
9
7
20
12
9
7
5
70
75
78
79
72
75
77
79
70
75
79
80
72
75
77
79
70
73
75
78
77
84
81
82
83
180
150
84
83
82
83
83
80
84
81
82
83
82
83
83
80
84
FEATURES
◆
RoHS compliant
◆
Efficiency up to 80%
◆
Miniature SIP Package Style
◆
Wide temperature performance at
A0509XM-1W
A0512XM-1W
A0515XM-1W
A1205XM-1W
A1209XM-1W
A1212XM-1W
A1215XM-1W
B0505XLM-1W
B0509XLM-1W
B0512XLM-1W
B0515XLM-1W
full
2 Watt load,-40°C to 85 °C
◆
UL 94V-0 package material
◆
No heatsink required
◆
Industry standard pinout
◆
Power sharing on output
◆
1KVDC isolation
◆
Continuous Short Circuit Protection
◆
Internal SMD construction
◆
No external components required
B1205XLM-1W
B1209XLM-1W
B1212XLM-1W
B1215XLM-1W
B2405XLM-1W
B2409XLM-1W
B2412XLM-1W
B2415XLM-1W
⑥
MODEL SELECTION
B 05 05 X LM -1W
①Product
Series
③Output
Voltage
⑤Package
Style
①
②
③
④
⑤
B2424XLM-1W
②Input
Voltage
④Fixed
Input
⑥Rated
Power
ISOLATION SPECIFICATIONS
Parameter
Isolation test voltage
Test conditions
Flash tested for 1 minute and 1mA max
Test at Viso=500VDC
Min.
1000
1000
Typ.
Max.
Unit
VDC
MΩ
APPLICATIONS
The A_XM-1W&B_XLM-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.
Isolation resistance
OUTPUT SPECIFICATIONS
Parameter
Output power
Line regulation
For Vin change of 1%
10% to 100% full load(5V output)
10% to 100% full load(9V output)
Load regulation
10% to 100% full load(12V output)
10% to 100% full load(15V output)
10% to 100% full load(24V output)
Output voltage accuracy
Temperature drift
Output Ripple&Noise*
100% full load
20MHz Bandwidth(A-XM-1W)
20MHz Bandwidth(B-XLM-1W)
100% load, nominal input(5V,12V)
Switching frequency
100% load, nominal input(24V)
500
50
75
100
Khz
10
8.3
6.8
6.3
5
Test conditions
Min
0.1
Typ.
Max
1
1.2
15
10
Unit
W
%
10
10
10
See tolerance envelope graph
0.03
75
MV p-p
100
%/°C
MICRODC reserves the copyright
* Test ripple and noise by "parallel cable" method. See detailed operation instructions at Testing of Power
Converter section, application notes.
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 1 of 2
A-XM-1W
＆
B-XLM-1W
Series
COMMON SPECIFICATIONS
Parameter
Storage humidity range
Operating temperature
Storage temperature
Lead temperature
Temp.rise at full load
Cooling
Case material
Short circuit protection*
MTBF
Weight
3500
2.1
1.5mm from case for 10 seconds
-40
-55
300
15
25
Conditions
Min.
Typ.
Max.
95
85
125
℃
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).
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 testing and application circuit
Units
%
Free air convection
Plastic(UL94-V0)
Continuous
1
s
K hours
g
*Supply voltage must be discontinued at the end of short circuit duration.
TYPICAL CHARACTERISTICS
Temperature Derating Graph
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 greatest capacitance of its filter capacitor sees (Table 1).
Vin
(VDC)
5
12
24
--
EXTERNAL CAPACITOR TABLE (TABLE 1)
Cin
Single
Cout
Dual
Vout
Vout
(μF)
47
2.2
1.0
--
(VDC)
5
9
12
15
(μF)
10
4.7
2.2
1
(VDC)
±5
±9
±12
±15
Cout
(μF)
4.7
2.2
1.0
0.47
OUTLINE DIMENSIONS & PIN CONNECTIONS
SIZE Graph
RECOMMENDED FOOTPRINT
Top view,grid:2.54mm(0.1inch)
diameter:1.00mm(0.039inch)
It's not recommend to connect any external capacitor in the application field
with less than 0.5 watt output.
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 conne ct ed to the inpu t or outp ut end in ser i es (F i gu r e 2) .
FOOTPRINT DETAILS
Pin
1
2
4
5
6
Note:
Unit:mm(inch)
Pin section:0.50*0.3mm(0.020*0.012inch)
Pin section tolerances:±0.10mm(±0.004inch)
General tolerances: ±0.25mm(±0.010inch)
Single
VIN
GND
0V
NC
+V0
Dual
VIN
GND
-V0
0V
+V0
When the environment temperature is higher than 71°C, the
71°
product output power should be less than 60% of the
tha
rated power.
No parallel connection or plug and play.
N C - Not available for electrical connection.
Requirement on output load
To ensure this module can operate efficiently and reliably, a minimum load is specified for this kind of DC/DC
converter in addition to a maximum load(namely full load).During operation, make sure the specified range
of input voltage is not exceeded,the minimum output load is not less than 10% of the full load, and that this
product should
never be operated under no load!
RoHS COMPLIANT INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature of 300°C for 10 seconds.
The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin with Nickel Preplate. The DIP
types are Matte Tin over Nickel Preplate. Both types in this series are backward compatible with Sn/Pb soldering
systems.
Microdc Professional Power Module,Inc.
Tel:0086-20-86000646 E-mail:tech@microdc.cn
Website:http://www.microdc.cn
REACH COMPLIANT INFORMATION
This series has proven that this product does not contain harmful chemicals, it also has harmful chemical substances
through the registration, inspection and approval.
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 2 of 2
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