WRN78XXM-1000
Series
WIDE INPUT,NON-ISOLATED REGULATED SINGLE OUTPUT SIP3 DC/DC CONVERTER
INPUT,NON-
NON-ISOLATED
SIP3
SELECTION GUIDE
Input
Part Number
Voltage Range
(VDC)
Voltage
(VDC)
Output
Current
(MA)
Efficiency(%,Typ)
Vin(min)
Vin(max)
WRN781.5M-1000
4.75-18
4.75-18
4.75-18
4.75-20
6.5-20
1.5
1.8
2.5
3.3
5.0
1000
1000
1000
1000
1000
78
82
87
90
93
72
76
82
83
85
FEATURES
◆
◆
◆
◆
◆
◆
WRN781.8M-1000
WRN782.5M-1000
WRN7803M-1000
WRN7805M-1000
Efficiency up to 93%
Operating tem.range:-40°C ~ 85°C
Pin-out compatible with WRN78XX linear
Short circuit protection,Thermal Shutdown
OUTPUT SPECIFICATIONS
ltem
Test conditions
Min.
Typ.
Max.
Units
Low ripple and noise
Micro miniature SIP3 package,meet
UL94-Vo requirement
Output Voltage accuracy
Line regulation
Load regulation
Ripple＆Noise*
Short Circuit protection
100% full load,input voltage range
Vin= min. to max. at full load
10% to 100% load
20MHZ Bandwidth (refer to figure 3)
±2
±0.5
±0.5
25
±3
±0.75
±1.0
45
%
%
%
mVp-p
Continuous, automatic recovery
Internal IC junction
150
3000
Full load,input voltage range
335
385
435
±100
Vin from min to max and at 0% load
-40 °C ~ +85 °C ambient
7
10
±0.02
1000
°C
mA
KHZ
mV
mA
%/℃
µF
◆
◆
◆
No heatsink required
Industry standard pinout
MTBE>2000KHours
Thermal Shutdown
Output current limit
Switching frequency
Dynamic load stability
Quiescent current
Temperature coefficient
Max capacitance load
MODEL SELECTION
WRN78 05 M -1000
①Product
Series
③Miniature
SIP3 Package
①
②
③
④
②Output
Voltage
④Output
Current
*WRN7803M-1000 is ±3.5%(MAX)
COMMON SPECIFICATIONS
ltem
Test conditions
Min.
Typ.
Max.
Units
DESCRIPTION
The WRN78xxM-1000 Series high efficiency switching
regulators are ideally suited to replace 78xx linear
regulators and are pin compatible. The efficiency of up to
93% means that very little energy is wasted as heat so
there is no need tor any heat sinks with their additional
space and mounting costs.
Storage Humidity Range
Operating Temp. Range
Storage Temp. Range
Operating Case Temp.
Lead Temperature
Cooling
Case Material
MTBF
(25°C MIL-HDBK-217F )
2000
2.0
1.5mm from case for 10 seconds
Power derating (above 71℃)
-40
-55
95
85
125
100
300
Free Air Convection
Plastic (UL94-V0)
%
℃
K hours
PRODUCT ID DESCRIPTION
Weight
Note:
1. All
specifications measured
at TA=25°C,
humidity<75%,
nominal
g
input voltage
and
rated
output
load unless otherwise specified.
2. Only typical models listed. If you need other model, please confirm the power, input voltage and output voltage,
then phone us.
MICRODC R ESERVES THE COPYRIGHT
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 1 of 4
WRN78XXM-1000
Series
TYPICAL CHARACTERISTICS
Temperature Derating Graph
EXTERNAL CAPACITOR TABLE
Part Number
WRN781.5M-1000
WRN781.8M-1000
WRN782.5M-1000
WRN7803M-1000
WRN7805M-1000
C1,C3
(ceramic capacitor)
10uF/25V
10uF/25V
10uF/25V
10uF/25V
10uF/25V
C2,C4
(ceramic capacitor)
22uF/6.3V
22uF/6.3V
22uF/10V
22uF/16V
22uF/16V
(figure 1)
TYPICAL APPLICATION CIRCUIT
(figure 2)
Note:
1.C1 and C2 are required and should be fitted close to the converter pins.
2.The capacitance of C1,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.
TEST CONFIGURATIONS (TA=25
℃
)
(TA=25℃
1 Efficiency and Output Voltage Ripple Test
(figure 3)
2 Start-up and Load Transient Response Test
(figure 4)
The copyright and authority for the interpretation of the products are reserved by MICRODC
Specifications subject to change without notice
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 2 of 4
WRN78XXM-1000
Series
OUTPUT RIPPLW REDUCTION
To reduce output ripple,it is recommended to add a LC filter in output port
L:Recommended parameter 10µH~47µH.
10µH~47µ
(figure 5)
CHARACTERISTICS
Efficiency
Efficiency
Ripple(mV)
Ripple
Efficiency VS Vin(Full Load)
Ripple VS Vin(Full load)
Efficiency
Ripple(mV)
Efficiency VS Load(Vin=Vin-nominal)
Ripple VS Load(Vin=Vin-nominal)
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 3 of 4
WRN78XXM-1000
Series
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
Mechanical Dimensions
Recommended Footprint
Note:grid 2.54*mm
Tube Outline Dimensions
Note:
FOOTPRINT DETAILS
Pin
1
2
3
Function
+Vin
GND
+Vout
Unit:mm[inch]
General tolerances:±0.50mm:[0.020inch]
L=530mm[20.866inch] Packaging quantity:43 pcs
L=220mm[8.661inch] Packaging quantity:17 pcs
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;
Short tube outer packaging dimensions(with three inner packaging
boxes):
L*W*H=600*215*325mm;
Note:
Unit:mm[inch]
Pin section tolerances:±0.10mm[±0.004inch]
General tolerances:±0.25mm[±0.010inch]
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.
http://www.microdc.cn
Technical Enquiries-Email:tech@microdc.cn Tel:0086-20-86000646
Page 4 of 4
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