WRN78XXT 1000

WRN78XXT-1000 Series
WIDE INPUT, NON-ISOLATED & REGULATED SMD PACKAGE SINGLE OUTPUT
PRODUCT PROGRAM
Input Voltage(VDC)
Output Voltage
(VDC)
Nominal
Range
Input
Current
(mA)
WRN781.5T-1000
12
5.0-18
165
1.5
fixed
FEATURES
WRN781.8T-1000
12
5.0-18
190
1.8
1.5-3.6
WRN782.5T-1000
12
5.0-18
245
2.5
◆Efficiency up to 92%
WRN7803T-1000
12
5.0-18
320
WRN7805T-1000
12
7.0-18
460
Part Number
◆No heatsink required
Vin
Vin
(min.)
(max.)
1000
76
73
1000
78
75
1.5-3.9
1000
82
82
3.3
1.8-5.5
1000
84
84
5.0
2.5-6.5
1000
90
88
1000
92
91
Normal
(mA)
Range
12
8.5-18
580
6.5
fixed
Note: To adjust the output voltage must be met Vin-Vo>2V.
Input Current measured at nominal input voltage and rated output load.
WRN786.5T-1000
◆1.0AMP SMD package
Efficienc
Efficiencyy(%,Typ)
Current
Adjust
◆Super low ripple and noise
◆Adjustable output voltage
INPUT SPECIFICATIONS
◆Remote ON/OFF control
INPUT SPECIFICATIONS Test Conditions
Item
Min.
Input Filter
◆Short circuit protection
Typ.
Max.
Units
Capacitor (10µF)
Start Current(RMS)
0.95
1.1
Typ.
Max.
A
◆Low control current
OUTPUT SPECIFICATIONS
◆Operating temperature: -40℃~ +85℃
Item
Test Conditions
Output Voltage Accuracy
Min.
±2
±3
±0.2
±0.5
±0.4
±1.0
20MHz bandwidth
20
35
20MHz bandwidth(refer to Figure 6)
10
15
Input voltage range at full load
Line Regulation
MODEL SELECTION
Load Regulation
WR
WRN78
N78①05②T③-1000④
Ripple and Noise*
①Product Series
②Output Voltage
③SMD Package Style ④Output Current
Nominal input,10% to 100% load
Short Circuit Protection Mode
Hiccup Mode
Short Circuit Protection
Continuous, automatic recovery
Inside Wasted
Thermal Shutdown
0.5
Internal IC junction
APPLICATIONS
The WRN78xxT-1000 series with high efficiency
switching
regulators
are
ideally
supply
for
space
constrained mobile applications. There is no need for any
heatsinks. The additional features include remote ON/OFF
Switching Frequency
PWM type
Transient peak deviation
Input voltage range,10% to 100%
Transient recovery time
load
Temperature Coefficient
A
MHz
1
-40℃ ~ +85℃ ambient
±100
mV
100
µS
3
mA
±0.02
%/℃
1000
µF
ON
Open or 1.2<Vc<6V
control and adjustable output voltage. Super low ripple
OFF
Vc<0.6V
and noise of typically only 20mV and Low control current.
ON: Open or 1.2<Vc≤6V
ON/OFF Control Current
W
1.4
Max Capacitance Load
Remote ON/OFF
mVp-p
1.8
±75
Quiescent current
%
℃
150
Output current limit
Units
100
200
120
200
Typ.
Max.
Units
95
%
OFF:GND or Vc<0.4V
µA
Shutdown Input Current
*Test ripple and noise by “parallel cable” method.
COMMON SPECIFICATIONS
Item
Test Conditions
Min.
Power derating(above 71℃)
-40
+85
-55
+125
Storage humidity Range
Operating Temperature Range
Storage Temperature Range
Operating Case Temperature
MICRODC reserves the copyright
Lead Temperature
+100
1.5mm from case for 10 seconds
Cooling
http://www.microdc.cn
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
260
Free Air Convection
Page 1 of 5
℃
WRN78XXT-1000 Series
COMMON SPECIFICATIONS
Item
Test Conditions
TYPICAL TEMPERATURE CURVE
Min.
MTBF
Typ.
Max.
Units
Plastic (UL94-V0)
Case Material
1000
(MIL-HDBK-217F,+25℃)
k hours
Not supported
Hop swap
90
Thermal resistance
2.3
Weight
℃/ W
g
EMC SPECIFICATIONS
EN55022, CLASS A(without external circuit)
CE
EN55022, CLASS B(refer to Figure 4)
RE
EN55022, CLASS A(refer to Figure 5)
ESD
IEC/EN61000-4-2
Air ±8KV / Contact ±6KV
EFT
IEC/EN61000-4-4
±2KV
perf. Criteria B
Surge
IEC/EN61000-4-5
±2KV
perf. Criteria B(refer to Figure 4)
perf. Criteria B
TYPICAL APPLICATION CIRCUIT
RECOMMENDED REFLOW SOLDERING PROFILE
1. C1, C2 is required for best performance 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.
ADJUSTMENT RESISTOR VALUES
The R1, R2 in the above table are used to set the output voltage . If no need to adjust the output voltage, connect a ceramic capacitor to GND with 470pF typical value for increase
immunity. Insure the output voltage is in the adjust range or else may cause permanent damage to the device. Fine-tune output voltage must appease Vin-Vo>2V.
http://www.microdc.cn
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 2 of 5
WRN78XXT-1000 Series
EMC RECOMMENDED CIRCUIT
TEST CONFIGURATIONS (TA=25
(TA=25℃
℃)
APPLICATION EXAMPLE
To reduce output ripple, it is recommended to add a LC filter to output port.
L: Recommended parameter 10µH ~ 47µH.
http://www.microdc.cn
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 3 of 5
WRN78XXT-1000 Series
CHARACTERISTIC CURVE
EMC TESTING WAVE SHAPE
http://www.microdc.cn
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 4 of 5
WRN78XXT-1000 Series
OUTLINE DIMENSIONS & RECOMMENDED FOOTPRINT &PACKAGING
MECHANICAL DIMENSIONS
RECOMMENDED FOOTPRINT
TUBE OUTLINE DIMENSIONS
TAPINGREEL DIMENSIONS
RoHS COMPLIANT INFORMATION
This series is compatible with RoHS soldering systems with a peak wave solder temperature
of 300°C for 10 seconds.
The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin
with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this
series are backward compatible with Sn/Pb soldering systems.
Microdc Professional Power Module,Inc.
Tel:0086-20-86000646
REACH COMPLIANT INFORMATION
E-mail:[email protected]
Website:http://www.microdc.cn
http://www.microdc.cn
This series has proven that this product does not contain harmful chemicals, it also has
harmful chemical substances through the registration, inspection and approval.
Technical Enquiries-Email:[email protected] Tel:0086-20-86000646
Page 5 of 5