DC/DC Converter
URF_LP-20WR3 Series
20W,Ultra wide input, isolated & regulated single
output , DIP package, DC-DC converter
FEATURES
Ultra wide input voltage range (4:1)
High efficiency up to 89%
No-load power consumption as low as 0.12W
Isolation voltage :3K VDC
Input under-voltage protection, output short
circuit, over-voltage, Over-current protection
Operating temperature range: -40℃ to +85℃
Meet CISPR22/EN55022 CLASS A
Reverse voltage protection available with
A2S(Chassis mounting) or A4S(DIN-Rail mounting)
IEC60950, UL60950, EN60950 approval
International standard pin-out
CB
Patent Protection RoHS
URF_LP-20WR3 series are isolated 20W DC-DC products with 4:1 input voltage. They feature efficiency up to 89%, 3000VDC 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 power industry, data transmission
device, battery power supply device, tele-comunication device, distributed power supply system, remote control system, industrial robot
system etc. And extension package A2S and A4S also enable them with reverse voltage protection.
Selection Guide
③
Input Voltage (VDC)
Nominal
(Range)
Output
Efficiency
(%,Min./Typ.)
@ Full Load
Max. Capacitive
Load(µF)
①
Part No.
Certification
Output Voltage
(VDC)
Output Current (mA)
②
Max.
(Max./Min.)
5000/0
4000/0
2222/0
1667/0
1334/0
833/0
URF2403LP-20WR3
URF2405LP-20WR3
URF2409LP-20WR3
URF2412LP-20WR3
URF2415LP-20WR3
URF2424LP-20WR3
URF4803LP-20WR3
URF4805LP-20WR3
URF4812LP-20WR3
URF4815LP-20WR3
URF4824LP-20WR3
3.3
5
84/86
87/89
86/88
86/88
87/89
87/89
84/86
86/88
86/88
87/89
87/89
10000
10000
4700
1600
1000
500
9
24
(9-36)
40
12
15
24
3.3
5
UL/CE/CB
5000/0
4000/0
1667/0
1334/0
833/0
10000
10000
1600
1000
500
48
(18-75)
80
12
15
24
Notes:
① product model with a suffix of “A2S” means chassis mounting and that with a suffix of “A4S” indicates DIN-Rail mounting (e.g. URF2405LP-20WR3A2S means
chassis mounting; URF2405LP-20WR3A4S means DIN-Rail mounting );
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.
Input Specifications
Item
Operating Conditions
3.3V output
Min.
--
Typ.
799/40
936/40
947/9
400/20
473/20
473/5
30
Max.
819/45
958/45
969/12
410/25
485/25
485/8
--
Unit
mA
24VDC input
--
5V output
--
Other output
3.3V output
5V output
Input Current (full load / no-load)
--
48VDC input
--
--
Other output
24VDC input
48VDC input
--
Reflected Ripple Current
--
30
--
2016.01.13-A/3
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