DC/DC Converter
URA_LD-20WR3 & URB_LD-20WR3 Series
20W,Ultra wide input isolated & regulated dual /
single output DC/DC converter
FEATURES
Wide range of input voltage (4:1)
Efficiency up to 90%
No-load power consumption as low as 0.15W
Isolation voltage :1500VDC
Input under-voltage protection, output short
circuit protection, over-voltage protection,
over-current protection
Operating temperature range: -40℃ to +85℃
Meet CISPR22/EN55022 CLASS A
Six-sided metal shielding package
A2S (wring mounting) and A4S (35mm rail
mounting) products featuring reverse polarity
protection for input
Meet UL60950 , EN60950 and IEC60950
CB Patent Protection RoHS
URA_LD-20WR3 & URB_LD-20WR3 series are isolated 20W DC-DC products with 4:1 input voltage. They feature efficiency up to 90%, 1500VDC
isolation, operating temperature of -40℃~+85℃, Input under-voltage protection, output short circuit protection, over-voltage protection,
over-current protection and EMI meets CISPR22/EN55022 CLASS A, which make them widely applied in data transmission device, battery
power supplies, tele-comunication device, distributed power supply system, remote control system, industrial robot system fields. And
extension package A2S and A4S also enable them with reverse voltage protection.
Selection Guide
③
Input Voltage (VDC)
Output
Output Current
Efficiency
(%,Min./Typ.)
@ Full Load
Max. Capacitive
①
Certification
Part No.
④
Nominal
Max.
Output Voltage
(VDC)
②
Load (µF)
(mA)(Max./Min.)
±2000/0
±1111/0
±834/0
(Range)
URA2405LD-20WR3
URA2409LD-20WR3
URA2412LD-20WR3
URA2415LD-20WR3
URB2403LD-20WR3
URB2405LD-20WR3
URB2409LD-20WR3
URB2412LD-20WR3
URB2415LD-20WR3
URB2424LD-20WR3
URA4805LD-20WR3
URA4812LD-20WR3
URA4815LD-20WR3
±5
±9
84/86
86/88
86/88
86/88
84/86
88/90
87/89
87/89
88/90
88/90
84/86
86/88
87/89
4800
1000
800
±12
±15
3.3
5
±667/0
625
5000/0
10000
10000
4700
1600
1000
500
24
(9-36)
40
4000/0
9
2222/0
UL/CE/CB
12
1667/0
15
1333/0
24
834/0
±5
±2000/0
±834/0
4800
800
±12
±15
±667/0
625
URB4803LD-20WR3
URB4805LD-20WR3
URB4809LD-20WR3
URB4812LD-20WR3
3.3
5
5000/0
4000/0
2222/0
1667/0
84/86
88/90
87/89
87/89
10000
10000
4700
48
(18-75)
80
--
9
12
1600
UL/CE/CB
URB4815LD-20WR3
15
1333/0
88/90
1000
URB4824LD-20WR3
24
834/0
88/90
500
Notes:①Series with suffix “H” are heat sink mounting; series with suffix “A2S” are chassis mounting,with suffix “A4S” are DIN-Rail mounting, for example
URB2405LD-20WHR3A2S is chassis mounting of with heat sink,URB2405LD-20WR3A4S is DIN-Rail mounting of without heat sink; If the application has a
higher requirement for heat dissipation, you can choose modules with heat sink;
②Absolute maximum rating without damage on the converter, but it isn't recommended;
③Efficiency is measured In nominal input voltage and rated output load;A2S (wiring) and A4S (rail) Model due to input reverse polarity protection,
minimum efficiency greater than Min.-2 is qualified;
④ The capacitive loads of positive and negative outputs are identical.
2015.09.28-A/3
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