WRB-YDK-3W
WRB-YDK-3W
WRB-YDK-3W
WRB-YDK-3W
WRB-YDK-3W
WRB-YDK-3W
WRB-YDK-3W
WRB-YDK-3W
Series
Series
http://www.microdc.cn Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646 Page
1
of
4
Order
Order
Order
Order Code
Code
Code
Code
Nominal
Nominal
Nominal
Nominal
Input
Input
Input
Input
Voltage
Voltage
Voltage
Voltage
Rated
Rated
Rated
Rated
Output
Output
Output
Output
Voltage
Voltage
Voltage
Voltage
Output
Output
Output
Output Current
Current
Current
Current
1
1
1
1
Input
Input
Input
Input
Current
Current
Current
Current
Full
Full
Full
Full load
load
load
load
Ef
Ef
Ef
Ef f
f
f
f cienc
cienc
cienc
cienc
2
2
2
2
(Min.)
(Min.)
(Min.)
(Min.)
Isolation
Isolation
Isolation
Isolation
Capacitance
Capacitance
Capacitance
Capacitance
MTTF
MTTF
MTTF
MTTF
3
3
3
3
Min.Load Full Load
V (nom.)
V mA mA mA % pF kHrs
WRB0505YDK-3W 5 5 100-150 400-600 615 66 40 1939
WRB0509YDK-3W 5 9 55-83 222-333 563 72 52 1926
WRB0512YDK-3W 5 12 42-62 166-250 548 71 43 1907
WRB0515YDK-3W 5 15 33-50 133-200 533 73 44 1924
WRB1205YDK-3W 12 5 150 600 362 71 36 1928
WRB1209YDK-3W 12 9 83 333 320 78 52 1916
WRB1212YDK-3W 12 12 62 250 316 78 44 1897
WRB1215YDK-3W 12 15 50 200 308 79 47 1914
WRB2403YDK-3W 24 3.3 227 909 178 70 30 1671
WRB2405YDK-3W 24 5 150 600 174 70 36 1673
WRB2409YDK-3W 24 9 83 333 156 78 52 1663
WRB2412YDK-3W 24 12 62 250 154 80 44 1644
WRB2415YDK-3W 24 15 50 200 150 82 54 1657
WRB4803YDK-3W 48 3.3 227 909 87 71 30 1676
WRB4805YDK-3W 48 5 150 600 87 73 35 1668
WRB4809YDK-3W 48 9 83 333 78 80 52 1663
WRB4812YDK-3W 48 12 62 250 77 81 44 1648
WRB4815YDK-3W 48 15 50 200 76 81 53 1661
ge can ’ t exceed this value,or will cause the permanent damage.
3W
3W
3W
3W
,
,
,
, Wide
Wide
Wide
Wide Input
Input
Input
Input ,
,
,
, ISOLATED®ULATED
ISOLATED®ULATED
ISOLATED®ULATED
ISOLATED®ULATED SINGLE
SINGLE
SINGLE
SINGLE OUTPUT
OUTPUT
OUTPUT
OUTPUT DC/DC
DC/DC
DC/DC
DC/DC Converters
Converters
Converters
Converters
FEATURES
FEATURES
FEATURES
FEATURES
FEATURES
FEATURES
FEATURES
FEATURES
◆
RoHS compliant
◆ Industry standard footprint
◆ Ef fcienc y to 82%
◆ Power density 0.90W/cm
3
◆ 2:1 wide input range
◆ Single isolated output
◆ Short circuit protection
◆ Low pro fi le 24 pin case
◆ UL 94V-0 package material
◆ Operating temperature range -40 ℃ to 85 ℃
◆ No heatsink required
◆ Footprint 4.73cm
◆
5V,
12V, 24V & 48V input
◆ 3.3V,
5V, 9V,
12V & 15V output
◆ Internal SMD construction
◆ Fully encapsulated
APPLICATIONS
APPLICATIONS
APPLICATIONS
APPLICATIONS
APPLICATIONS
APPLICATIONS
APPLICATIONS
APPLICATIONS
MICRODC reserves the copyright
Models
Models
Models
Models
Models
Models
Models
Models
MODEL
MODEL
MODEL
MODEL
MODEL
MODEL
MODEL
MODEL
SELECTION
SELECTION
SELECTION
SELECTION
SELECTION
SELECTION
SELECTION
SELECTION
WRB
WRB
WRB
WRB
WRB
WRB
WRB
WRB
①
①
①
①
05
05
05
05
05
05
05
05
②
②
②
②
05
05
05
05
05
05
05
05
③
③
③
③
Y
Y
Y
Y
Y
Y
Y
Y
④
④
④
④
D
D
D
D
D
D
D
D K
K
K
K
⑤
⑤
⑤
⑤
-
-
-
-
-
-
-
-
3
3
3
3
3
3
3
3
W
W
W
W
W
W
W
W
⑥
⑥
⑥
⑥
① Product Series ② Input Voltage
③
Output Voltage
④
2:1 Wide Input Range
⑤ DIP 24k Package Style ⑥ Rated Power
The WRB-YDK-3W series is a range of low profile DC/DC
converters offering a single regulated output over a 2:1 input
voltage range. All parts deliver 3W output power up to 85
℃
without heatsinking, except the 4.5V to 9V input voltage
range which should be derated to 2W at the lower input
voltage. A flyback oscillator design with isolated feedback is
used to give regulation over the full operating range of 25%
to 100% of full load. It is strongly recommended that external
capacitors be used on input and output to guarantee
performance over full load and input voltage range.
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
INPUT
CHARACTERISTICS
CHARACTERISTICS
CHARACTERISTICS
CHARACTERISTICS
CHARACTERISTICS
CHARACTERISTICS
CHARACTERISTICS
CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Voltage range
Al l WRB05XX 4.5 5 9 VDC
Al l WRB12XX 9 12 18 VDC
Al l WRB24XX 18 24 36 VDC
Al l WRB48XX 36 48 72 VDC
Re fl ected ripple
current
2
WRB2403 180 360 mA p-p
WRB4803 140 290 mA p-p
All WRB05XX 400 500 mA p-p
All WRB12XX 150 170 mA p-p
All other WRB24XX 290 360 mA p-p
All other WRB48XX 100 127 mA p-p
ABSOLUTE
ABSOLUTE
ABSOLUTE
ABSOLUTE
ABSOLUTE
ABSOLUTE
ABSOLUTE
ABSOLUTE
MAXIMUM
MAXIMUM
MAXIMUM
MAXIMUM
MAXIMUM
MAXIMUM
MAXIMUM
MAXIMUM
RATINGS
RATINGS
RATINGS
RATINGS
RATINGS
RATINGS
RATINGS
RATINGS
Short-circuit protection Continuous
Lead temperature 1.5mm from case for 10 seconds 300 ° C
Minimum load 25% of rated load
Input voltage 05 types 10V
Input voltage 12 types 20V
Input voltage 24 types 40V
Input voltage 48 types 80V
Internal dissipation 1.7W
1. Refer to power derating graph.
2. Measured at full load with external input/output capacitors, refer to fi lter circuit 1.
3. Calculated using MIL-HDBK-217F with nominal input voltage at full load (ground benign) at 25 ° C .
All specifications typical at TA=25 ° C , nominal input voltage and rated output current unless otherwise
specified