M1WB_LXD Series
FIXED INPUT ISOLATED & UNREGULATED
1W OUTPUT SINGLE OUTPUT
MINIATURE DIP PACKAGE
FEATURES
●
Efficiency Up To 81%
●
Extremely Slim With 4.5mm Height
●
Single Output
●
1KVDC Isolation
●
Fixed Input Voltage
●
Unregulated Output Voltage
●
Temperature Range: -40
°C
~+85
°C
●
Industry Standard Pinout
●
UL94-V0 Package
●
No Heat Sink Required
●
No External Component Required
●
Compatible With “BB” DCP01 Series
●
RoHS
Compliance
RoHS
PRODUCT PROGRAM
Part
Number
M1WB0303LXD
M1WB0305LXD
M1WB0503LXD
M1WB0505LXD
M1WB0509LXD
M1WB0512LXD
M1WB0515LXD
M1WB1203LXD
M1WB1205LXD
M1WB1209LXD
M1WB1212LXD
M1WB1215LXD
Input
Voltage (VDC)
Nominal
Range
3.3
3.3
5
5
5
5
5
12
12
12
12
12
24
24
24
24
24
3.0~3.6
3.0~3.6
4.5~5.5
4.5~5.5
4.5~5.5
4.5~5.5
4.5~5.5
10.8~13.2
10.8~13.2
10.8~13.2
10.8~13.2
10.8~13.2
21.6~26.4
21.6~26.4
21.6~26.4
21.6~26.4
21.6~26.4
Voltage
(VDC)
3.3
5
3.3
5
9
12
15
3.3
5
9
12
15
3.3
5
9
12
15
Output
Current (mA)
Max
Min
300
200
300
200
111
83
67
300
200
111
83
67
300
200
111
83
67
30
20
30
20
12
9
7
30
20
12
9
7
30
20
12
9
7
Efficiency
(%, Typ)
72
73
74
78
79
80
78
75
78
80
81
79
76
79
80
81
79
Package
Style
DIP
DIP
DIP
DIP
DIP
DIP
DIP
DIP
DIP
DIP
DIP
DIP
DIP
DIP
DIP
DIP
DIP
APPLICATIONS
The M1WB_LXD Series is specially designed for
applications where a single power supply is
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.
These products don’t apply to:
1) Where the input supply voltage is varied
(variation
≥±
10%), otherwise our company’s
M1WWRB series is recommended;
2)Where the isolation voltage between input and
output is required to be
>
1000VDC, otherwise
our company’s M1WF_S(D) Series of products
are recommended;
3)Circuits in which the output voltage regulation
is demanding, otherwise our company’s M1WIB
Series or M1WWRB Series are recommended.
M1WB2403LXD
M1WB2405LXD
M1WB2409LXD
M1WB2412LXD
M1WB2415LXD
COMMON SPECIFICATIONS
Short circuit protection
Temperature rise at full load
Cooling
Operating temperature range
Storage temperature range
Lead temperature
Storage humidity range
Case material
MTBF
1 second
25
°
C MAX, 15
°
C TYP
Free air convection
-40
°
C
~
+85
°
C
-55
°
C
~
+125
°
C
300
°
C (1.5mm from case for 10 seconds)
≤
95%
Plastic (UL94-V0)
>3,500,000 hours
ISOLATION SPECIFICATIONS
Item
Isolation voltage
Isolation resistance
Test conditions
Tested for 1 minute
Test at 500VDC
Min
1000
1000
Typ
Max
Units
VDC
MΩ
OUTPUT SPECIFICATIONS
Item
Output power
Line regulation
Load regulation
Output voltage accuracy
Temperature drift
Output ripple
Switching frequency
Test conditions
For Vin change of 1%
10% to 100% full load
See tolerance envelope graph
100% full load
20MHz Bandwidth
Full load, nominal input
MIN
0.1
10
TYP
MAX
1
1.2
15
0.03
75
Units
W
%
%
%/
°
C
mVp-p
KHz
50
100
Note:
1.All specifications measured at TA=25
°C
, humidity<75%, nominal input voltage and rated output load unless
otherwise specified.
2.See below recommended circuits for more details.
Tel: 732-249-2656
www.megaelectronics.com
Fax: 732-249-7442
Edition: A
NOV-2005
TYPICAL CHARACTERISTICS
L
Vin
L
+Vo
C
GND
DC DC
<Figure 1>
C
0V
Vin
GND
REG
+Vout
DC DC
0V
REG
Ambient Temperature
( C )
Vin
GND
+Vout
DC DC
0V
PIN CONNECTIONS
Pin
1
2
5
6
7,8
14
Vin
GND
0V
+Vo
NC
NC
Top View
Overload Protection
Under normal operating conditions, the
output circuit of these products has no
protection against over-current and
short-circuits. The simplest method is to
connect a self-recovery fuse in series at
the input end or add a circuit breaker to
the circuit.
OUTLINE DIMENSIONS& RECONMENDED FOOTPRINT DETAILS
Output Voltage Regulation and
Over-voltage Protection Circuit
Side View
1 2
14
5 6 7
8
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 (see Figure 2).
Bottom View
External Capacitor Table
V
in
External
capacitor
4.7uF
2.2uF
1uF
--
V
out
5VDC
9VDC
12VDC
15VDC
External
capacitor
10uF
4.7uF
2.2uF
1uF
5VDC
12VDC
24VDC
--
Note: All Pins on a 2.54mm pitch; all pin diameters are 0.50mm; all dimensions in mm.
14
1 2
8
5 6 7
APPLICATION NOTE
Filtering
For some circuits which are sensitive to noise and ripple, a filtering capacitor
may be added to the DC/DC output end and input end to reduce the noise and
ripple. However, the capacitance of the output filter capacitor must proper. If
the capacitance is too big, a startup problem might arise. For every channel of
output, providing the safe and reliable operation is ensured, the greatest
capacitance of its filter capacitor refer to the
External Capacitor Table.
To get
an extreme low ripple, an “LC” filtering network may be connected to the input
and output ends of the DC/DC converter, which may produce a more
significant filtering effect. 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 (see figure 1).
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! 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 (MW2B_LXD series).
Tel: 732-249-2656
www.megaelectronics.com
Fax: 732-249-7442
Edition: A
NOV-2005
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