URA2405LD-15WR2 Datasheet, PDF (9/9 Pages) MORNSUN Science& Technology Ltd. – DUAL/SINGLE OUTPUT DIP PACKAGING, DC-DC CONVERTER

Vo
Parameter
R1(KΩ)
R2(KΩ)
R3(KΩ)
Vref(V)
3.3(VDC)
4.801
2.863
15
1.24
(Table 1)
5(VDC) 12(VDC)
2.883
2.864
10
2.5
10.971
2.864
17.8
2.5
15(VDC)
14.497
2.864
17.8
2.5
24 (VDC)
24.872
2.863
20
2.5
DESIGN CONSIDERATIONS
①Recommended circuit
All the URA_LD-15WR2&URB_LD-15WR2 Series have been tested according to the following recommended testing circuit before leaving
factory. This series should be tested under load. Never be tested under no load (see Figure 4).
If you want to further decrease the input surge voltage and the output ripple, you can increase a capacitance properly or choose capacitors with
low ESR .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.
For every channel of output, provided the safe and reliable operation is ensured, the recommended capacitance of its filter capacitor sees (Table 2).
Dual Output
Vin
Cin
GND
Single Output
Vin
Cin
GND
Cout
DC DC
Cout
DC DC Cout
（Figure 4）
+Vo
0V
-Vo
+Vo
0V
EXTERNAL CAPACITOR TABLE (Table 2)
Single
Vout
(VDC)
Cout Cin
(µF) (µF)
Dual
Vout
(VDC)
Cout^# Cin
(µF) (µF)
3.3/5
470
±5
220
12/15 220 100 ±12/±15 100 100
24
100
--
--
Note: ^# For each output.
②It is not recommended to increase the output power capability by connecting two or more converters in parallel. The product is not
hot-swappable.
Note:
1. Min. load shouldn't be less than 5%, otherwise ripple maybe increase dramatically. Operation under minimum load will not damage the converter,
however, they may not meet all specification listed.
2. Recommended Dual output models unbalanced load: ≤ ±5%, If the product operates >±5%, it may not be guaranteed to meet all specification
Listed, please contact our technical person for more detail.
3. Max. Capacitive Load tested at nominal input voltage and constant resistive load .
4. All specifications measured at Ta=25°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
5. In this datasheet, all the test methods of indications are based on our corporate standards.
6. All characteristics are for listed model, non-standard models may perform differently, please contact our technical person for more detail.
7. Contact us for your specific requirement.
8. Specifications subject to change without prior notice.
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: [phone]
Fax:[phone]
E-mail: [e-mail]
Http://www.mornsun-power.com
The copyright and authority for the interpretation of the products are reserved by MORNSUN
URA_LD-15WR2 & URB_LD-15WR2 2013.11.29-A/3 Page 9of 9