WRN78-2000B

WRN78XX-2000(B) Series
WIDE INPUT NON-ISOLATED & REGULATED SINGLE OUTPUT
Product Program
Input Voltage(VDC)
Part Number
Output
(%,Typ)
Efficiency
Efficiency(%,Typ)
Voltage
Current
Vin
Vin
(VDC)
(MA)
(min.)
(max.)
4.75-18
1.5
2000
79
76
4.75-18
1.8
2000
81
79
12
4.75-18
2.5
2000
85
83
WRN7803-2000
12
4.75-18
3.3
2000
87
86
WRN7805-2000
12
7-18
5
2000
91
88
WRN786.5-2000
12
8.5-18
6.5
2000
92
91
WRN781.5-2000B
12
4.75-18
1.5
2000
79
76
WRN781.8-2000B
12
4.75-18
1.8
2000
81
79
WRN782.5-2000B
12
4.75-18
2.5
2000
85
83
◆Low ripple and noise
WRN7803-2000B
12
4.75-18
3.3
2000
87
86
◆Micro miniature SIP3 package
WRN7805-2000B
12
7-18
5
2000
91
88
2000
92
91
Nominal
Range
WRN781.5-2000
12
FEATURES
WRN781.8-2000
12
WRN782.5-2000
◆Efficiency up to 92%,No heatsink required
◆2A large current output
◆Operating temperature : -40°C ~ +85°C
◆Short circuit protection, thermal shutdown
WRN786.5-2000B
12
8.5-18
6.5
Add suffix "B" for 90°bend pins, for example: WRN7805-2000B.
◆UL94-V0 requirement
◆Ultra low power loss
◆Industry standard pinout
OUTPUT SPECIFICATION
SPECIFICATIONS
S
◆Pin-out compatible with WRN78xx linear
Item
Test conditions
◆MTBE>2000,000Hours
Output voltage accuracy
100% full load, input voltage range
±2
±3
Line regulation
Vin=min. to max, at full load
±0.5
±0.75
Load regulation
10% to 100% load
±0.5
±1.0
Ripple & Noise*
20MHz bandwidth (refer to figure 6)
MODEL SELECTION
①
②
③
④
WR
WRN78
N78 05 -2000 (B)
①Product Series
③Output Current
②Output Voltage
④Bend 90°pins
Min.
Short circuit input power
Short circuit protection
Thermal shutdown
Full load, input voltage range
300
Quiescent current
APPLICATIONS
Temperature coefficient
-40℃ ~ +85℃ ambient
Max capacitance load
The WRN78xx-2000(B) series switching regulators
Max.
Units
25
45
mVp-p
0.5
1.8
W
150
℃
5000
mA
340
380
KHz
5
10
mA
±0.03
%/℃
1000
µF
*Test ripple and noise by "Parallel cable" method.
are ideal replacement for WRN78xx linear regulators.. The
efficiency of up to 92% means that very little energy is
wasted as heat so there is no need for any heat sinks
COMMON SPECIFICATION
SPECIFICATIONS
S
with their additional space and mounting costs. They are
Operating temp. range
-40~+85℃(above 71℃ power derating)
widely used in industrial control, instrumentation, and
Operating case temp.
+100 ℃(max)
electric power applications.
Storage temp. range
-55~+125℃
Cooling
Free air convection
Lead temperature**
300℃(max)
Storage humidity range
≤95%
Case material
Plastic(UL94-V0)
MTBF
> 2000k hours (25℃,MIL-HDBK-217F)
Weight
4.0g
Conducted emissions (Refer to Figure 5)
EN55022
CLASS B
Radiated emissions
EN55022
CLASS B
ESD
EN61000-4-2 Level 3 6kV/8kV perf . Criteria B
**1.5mm from case for 10 seconds
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%
Continuous, auto-recovery
Internal IC junction
Output current limit
Switching frequency
Typ.
Note:
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Page 1 of 4
WRN78XX-2000(B) Series
TYPICAL CHARECTERISTICS
EXTERNAL CAPACITOR TABL
(figure 1)
Part Number
C1
(Ceramic capacitor)
C2
(Ceramic capacitor)
WRN7801-2000(B)
10µF/25V
22µF/6.3V
WRN78X2-2000(B)
10µF/25V
22µF/6.3V
WRN7802-2000(B)
10µF/25V
22µF/6.3V
WRN7803-2000(B)
10µF/25V
22µF/6.3V
WRN7805-2000(B)
10µF/25V
22µF/16V
WRN78X6-2000(B)
10µF/25V
22µF/16V
TYPICAL APPLICATION CIRCUIT
Note:
1. C1 and C2 are required and should be fitted close to the converter pins.
2. The capacitance of C1and C2 sees external capacitor table, it can be increased properly if required, and tantalum or low ESR electrolytic capacitors may
also suffice.
3. No parallel connection or plug and play.
INPUT FILTER CIRCUIT CONNECT
(figure 3)
OUTPUT FILTER CIRCUIT CONNECT
(figure 4)
EMC RECOMMENDED CIRCUIT
(figure 5)
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Page 2 of 4
WRN78XX-2000(B) Series
OTEST CONFIGURATIONS (TA=25
(TA=25℃
℃)
1
Efficiency and Output Voltage Ripple Test
(figure 6)
2
Start-up and Load Transient Response Test
(figure 7)
CHARACTERISTICS CURVE
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Page 3 of 4
WRN78XX-2000(B) Series
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
78XX-2000
WRN
WRN78XX-2000
RECOMMENDED FOOTPRINT
78XX-2000
WRN
WRN78XX-2000
78XX-2000
B
WRN
WRN78XX-2000
78XX-2000B
Note:
grid:2.54*2.54mm.
Note:
Unit:mm[inch]
Pin section tolerances: ±0.10mm[±0.004inch]
General tolerances: ±0.25mm[±0.010inch]
TUBE OUTLINE DIMENSIONS
78XX-2000
B
WRN
WRN78XX-2000
78XX-2000B
WRN78XX-2000
Note:
Unit:mm[inch]
Pin section tolerances: ±0.10mm[±0.004inch]
General tolerances: ±0.25mm[±0.010inch]
WRN78XX-2000B
Note:
Unit :mm[inch]
General tolerances:±0.50mm[±0.020inch]
L=530mm[20.866inch]
Devices per tube quantity: 44pcs
L=220mm[8.661inch]
Devices per tube quantity: 17pcs
Short tube inner packaging dimensions: L*W*H=255*170*80mm
Short tube outer packaging dimensions(with six inner packaging boxes):
L*W*H=375*280*270mm
Long tube inner packaging dimensions: L*W*H=580*200*100mm
Long tube outer packaging dimensions(with two inner packaging boxes):
L*W*H=600*215*220mm
Long tube outer packaging dimensions(with three inner packaging boxes):
L*W*H=600*215*325mm
Note:
1.All specifications measured at Ta=25℃, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
2. Only typical models listed, other models may be different, please contact our technical person for more details.
3. In this datasheet, all the test methods of indications are based on corporate standards.
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Page 4 of 4