K78L03-1000R3 Datasheet, PDF (1/4 Pages) MORNSUN Science& Technology Ltd. – Support the negative output

DC/DC Converter
K78Lxx-1000R3 Series
Wide input voltage , non-isolated & regulated single
output
FEATURES
 High efficiency up to 96%
 No-load input current as low as 0.1mA
 Operating temperature range: -40℃ to +85℃
 Support the negative output
 Output short circuit protection
 Pin-out compatible with LM78XX linear regulators
 Meets UL60950, EN60950 standards（Pending）
Patent Protection RoHS
K78Lxx-1000R3 series are high efficiency switching regulators and ideal substitutes of LM78xx series three-terminal linear regulators. The
product is featured with high efficiency, low loss and no heat sink requirement. They are widely used in industrial control, instrumentation,
and electric power applications.
Selection Guide
Certification
Part
Number
Input Voltage (VDC)
Nominal
(Range)
Output
Output Voltage
(VDC)
Max. Output
Current (mA)
K78L03-1000R3
24
(6-36)
3.3
1000
K78L05-1000R3
24
(8-36)
12
(8-27)
5.0
1000
-5.0
-500
UL/CE
(Pending)
K78L12-1000R3
24
(16-36)
12
(8-20)
12
-12
1000
-300
K78L15-1000R3
24
(20-36)
12
(8-18)
15
-15
1000
-300
Note:For input voltage higher than 30 VDC, a 22µF/50V input capacitor is required.
Efficiency (%/Typ.)
(Min. Vin)/ (Max. Vin)
@Full Load
90/81
93/86
86/82
96/93
89/88
96/94
89/89
Max.
Capacitive
Load(µF)
680
680
330
680
330
680
330
Input Specifications
Item
No-load Input Current
Reverse Polarity Input
Input Filter
Operating Conditions
Positive output
Min.
Typ.
Max.
Unit
--
0.1
1
mA
Forbidden
Capacitor filter
Output Specifications
Item
Operating Conditions
Min.
Typ.
Max.
Unit
Output Voltage Accuracy
Line Regulation
K78L03-1000R3
--
Full load, input voltage range
±2
±4
Others
--
±2
±3
%
Full load, input voltage range
--
±0.2
±0.4
Load Regulation
Nominal input,10% -100% load
--
±0.4
±0.6
Ripple & Noise*
20MHz bandwidth, nominal input, 20% -100% load
--
20
75
mVp-p
Temperature Drift Coefficient
Operating temperature -40℃ ~ +85℃
--
--
±0.03
%/℃
Transient response deviation
Transient recovery time
Nominal input,
25%-50%-25%、50%-75%-50% load step change
--
50
300
mV
--
0.1
1
ms
Output short circuit protection
Nominal input
Continuous, self-recovery
Note: *1. Ripple and noise tested with “parallel cable” method, please refer to DC-DC Converter Application Notes for specific operation methods;
*2.With the load lower than 20%, the maximum ripple and noise of 3.3V/5V output products will be 100mVp-p, 12V/15V output products will be 2%Vo.
2016.03.24-A/0 Page 1 of 4
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