E0505S-2W Datasheet, PDF (2/2 Pages) MORNSUN Science& Technology Ltd. – DUAL/SINGLE OUTPUT DC-DC CONVERTER

ISOLATION SPECIFICATIONS
Item
Test conditions
Min Typ Max Units
Isolation voltage Tested for 1 minute and 1 mA max 3000
Isolation resistance Test at 500VDC
1000
VDC
MΩ
OUTPUT SPECIFICATIONS
Item
Test conditions
Min Typ Max Units
Output power
Line regulation
0.2
For Vin change
of ±1%
(3.3V output)
(others output)
2
W
±1.5
±1.2
(3.3V output)
12 20
(5V output)
10
15
%
Load regulation
10% to 100% load (9V output)
8.3 10
(12V output)
6.8 10
(15V output)
6.3 10
Output voltage accuracy
Temperature drift
100% full load
See tolerance envelope graph
0.03 %/°C
Ripple& Noise*
20MHz Bandwidth
75 150 mVp-p
Switching frequency Full load, nominal input
70
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 TA=25°C, humidity<75%, nominal input voltage and rated output load
unless otherwise specified.
2. Dual output models unbalanced load: ±5%.
TYPICAL CHARACTERISTICS
Operating Temp.(^oC)
OUTLINE DIMENSIONS & PIN CONNECTIONS
First Angle Projection
Side view
RECOMMENDED FOOTPRINT
Top view,grid:2.54*2.54mm(0.1*0.1inch)
diameter:1.00mm(0.039inch)
Dual Output
12
56
Single Output
0.90
(0.035)
12
5
Bottom view
Note:
Unit: mm(i nch)
Pin section:0.50*0.30mm(0.020*0.012inch)
Pinsection tolerances: 0.10mm( 0.004inch)
General tolerances: 0.25mm ( 0.010inch)
FOOTPRINT DETAILS
Pin Single
Dual
1
Vin
Vin
2
GND
GND
5
0V
-Vo
6
No pin
0V
7
+Vo
+Vo
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 (E_S-1W&F_S-1W).
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 “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
+Vo
Cout
Cin
GND
DC DC
L ^Cout
0V
-Vo
Single Output
L
Vin
L
+Vo
Cin
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)
Vin
(VDC)
Cin
(uF)
Single
Vout
(VDC)
Cout
(uF)
Dual
Vout
(VDC)
Cout
(uF)
5
4.7 3.3/5 10
±5
4.7
12 2.2
9
4.7
±9
2.2
24
1
12 2.2 ±12
1
-
-
15
1
±15
1
It’s not recommended 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
connected to the input or output end in series (Figure
2).
Dual Output
Vin REG
REG
G ND
DC DC
REG
+ Vout
0V
-Vout
Single Output
Vin REG
REG
G ND
DC DC
+ Vout
0V
(Figure 2)
No parallel connection or plug and play.
MORNSUN reserves the copyright
Specifications subject to change without notice.
E_S-2W & F_S-2W
A/2-2008
Page 2 of 2