OUTPUT SPECIFICATIONS
Item
Output power
Line regulation
For Vin change (3.3V output)
of
±1%
(others output)
(3.3V output)
(5V output)
Load regulation
10% to 100%
load
(9V output)
(12V output)
(15V output)
(24V output)
Output voltage accuracy
Temperature drift
Ripple& Noise*
Switching frequency
100% full load
20MHz Bandwidth
Full load, nominal input
100
100
15
10
8.3
6.8
6.3
6.0
Test conditions
Min
0.1
Typ
Max
1
±1.5
±1.2
20
15
15
15
15
15
%
Units
W
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.
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).
L
L
See tolerance envelope graph
0.03
150
%/°C
mVp-p
KHz
*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. See below recommended circuits for more details.
Vin
Cin
+Vo
DC DC
Cout
GND
0V
(Figure 1)
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
sees (Table 1).
EXTERNAL CAPACITOR TABLE (Table 1)
Single Vout
Vin
Cin
Cout
(V
C)
(VDC)
(uF)
(uF)
TYPICAL CHARACTERISTICS
Operating Temp.(
o
C)
3.3/5
4.7
2.2
1
-
3.3/5
9
12
15/24
10
4.7
2.2
1
OUTLINE DIMENSIONS & PIN CONNECTIONS
First An gle Projection
FXXXX M-1W
FXXXXN-1W
12
24
-
It’s not recommended to connect any external
capacitor in the application field with less than 0.5 watt
output.
(0.161)
Side view
0.50
(0.020)
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
10.00(0.394)
6.00(0.236)
1 2 3 4
Bottom view
1
7
4
5
connected to the input or output end in series
(Figure 2).
Vin
GND
Vin
REG
+Vout
DC
DC
0V
REG
RECOMMENDED FOOTPRINT
Top
view,grid:2.54mm(0.1inch),
diameter:1.00mm(0.039inch)
+Vout
12 3
4
7
1
5
4
GND
DC
DC
0V
(Figure 2)
Overload Protection
Under norm al operating conditions, the output
circuit of these products has no protection against
FOOTPRINT DETAILS
Pin
1
2
3
4
Function
GND
Vin
0V
+Vo
Pin
1
4
5
7
Function
GND
Vin
+Vo
0V
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.
No parallel connection or plug and play.
N ote:
U nit:mm(inch)
Pin secti on:0.50*0.30mm(0.020*0.012inch)
Pin secti on tolerances: 0.10mm( 0.004inch)
General tolerances: 0.25mm( 0.010i nch)
MORNSUN reserves the copyright
Specifications subject to change without notice.
F_M-1W & F_N-1W
A/1-2008
Page 2 of 2
MORNSUN [ MORNSUN SCIENCE& TECHNOLOGY LTD. ]
