K78L03-1000R3 [MORNSUN]
Support the negative output;
| 型号： | K78L03-1000R3 |
| 厂家： | 
MORNSUN SCIENCE& TECHNOLOGY LTD. |
| 描述： | Support the negative output |
| 文件： | 总4页 (文件大小：1429K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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
Input Voltage (VDC)
Output
Output Voltage
Efficiency (%/Typ.)
(Min. Vin)/ (Max. Vin)
@Full Load
Max.
Capacitive
Load(µF)
Part
Certification
Nominal
(Range)
24
(6-36)
24
(8-36)
12
(8-27)
24
(16-36)
12
(8-20)
24
(20-36)
12
(8-18)
Max. Output
Current (mA)
Number
(VDC)
K78L03-1000R3
K78L05-1000R3
3.3
1000
1000
-500
1000
-300
1000
-300
90/81
93/86
86/82
96/93
89/88
96/94
89/89
680
680
5.0
-5.0
12
330
680
330
680
330
UL/CE
(Pending)
K78L12-1000R3
K78L15-1000R3
-12
15
-15
Note:For input voltage higher than 30 VDC, a 22µF/50V input capacitor is required.
Input Specifications
Item
Operating Conditions
Positive output
Min.
--
Typ.
0.1
Max.
Unit
mA
No-load Input Current
Reverse Polarity Input
Input Filter
1
Forbidden
Capacitor filter
Output Specifications
Item
Operating Conditions
Min.
--
Typ.
±2
Max.
±4
Unit
%
K78L03-1000R3
Others
Output Voltage Accuracy
Full load, input voltage range
--
--
--
--
--
--
--
±2
±0.2
±0.4
20
±3
±0.4
±0.6
75
Line Regulation
Full load, input voltage range
Nominal input,10% -100% load
Load Regulation
Ripple & Noise*
20MHz bandwidth, nominal input, 20% -100% load
mVp-p
%/℃
mV
Operating temperature -40
℃ ~ +85℃
--
±0.03
300
1
Temperature Drift Coefficient
Transient response deviation
Transient recovery time
Output short circuit protection
50
Nominal input,
25%-50%-25%、50%-75%-50% load step change
0.1
ms
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.
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
K78Lxx-1000R3 Series
General Specifications
Min.
-40
Typ.
--
Max.
85
Unit
Item
Operating Conditions
Operating Temperature
Storage Temperature
Derating if the temperature ≥71℃ (see Fig. 1)
℃
-55
--
125
Pin Welding Resistance Temperature
Storage Humidity
Welding time: 10s (Max.)
Non-condensing
--
5
--
260
95
%RH
KHz
--
420
580
520
680
620
780
K78L03/05-1000R3
Switching Frequency
MTBF
Full load, nominal input
Others
K hours
MIL-HDBK-217F@25℃
2000
--
--
Physical Specifications
Package Dimensions
11.50mm*7.50mm*17.50 mm
2.1g (Typ.)
Weight
Cooling Method
Free air convection
EMC Specifications
CISPR22/EN55022 CLASS B (see Fig. 4-② for recommended circuit)
CISPR22/EN55022 CLASS B (see Fig. 4-② for recommended circuit)
IEC/EN 61000-4-2 Contact ±4KV
CE
EMI
RE
ESD
RS
perf. Criteria B
perf. Criteria A
perf. Criteria B
IEC/EN 61000-4-3 10V/m
IEC/EN 61000-4-4 ±1KV (see Fig. 4-① for recommended circuit)
EFT
EMS
IEC/EN 61000-4-5
circuit)
line to line ±1KV(see Fig. 4-① for recommended
Surge
CS
perf. Criteria B
perf. Criteria A
IEC/EN 61000-4-6 3Vr.m.s
Product Characteristic Curve
Temperature Derating Curve
120
100
80
60
The Wind Speed:0.8m/s
40
20
0
85
-40
0
40 71
120
℃
Operating Temperature (
)
Fig. 1
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
K78Lxx-1000R3 Series
Design Reference
1. Typical application circuit
2
1
1
DC/DC
3
3
+Vin
-Vout
GND
+Vin
GND
DC/DC
2
+Vout
GND
C1
C1
C2
C2
GND
Positive output application circuit
Negative output application circuit
Fig. 2 Typical application circuit
+Vin
+Vout
3
2
1
DC/DC
2
Sheet 1
C1/C3
C4
C3
C2/C4
GND
GND
Part No.
(ceramic capacitor) (ceramic capacitor)
K78L03-1000R3
K78L05-1000R3
K78L12-1000R3
K78L15-1000R3
22μF/10V
LDM
-Vout
1
DC/DC
3
22μF/10V
10μF/50V
22μF/25V
C1
22μF/25V
C2
Fig. 3 Positive and Negative output parallelling application circuit
Note:
1. C1 and C2 (C3 and C4) are required and should be connected close to the pin terminal of the module.
2. The capacitance of C1 and C2 (C3 and C4) refer to Sheet 1.
3. To reduce the output ripple furtherly. C2 and C4 can be increased properly if required, and tantalum or low ESR electrolytic capacitors may also suffice.
4. When the products used as the circuit like figure 3, an inductor named as LDM up to 10μH is recommended in the circuit to reduce the mutual interference.
5. Cannot be used in parallel for output and hot swap.
2. EMC solution-recommended circuit
LDM1
LDM2
FUSE
DC/DC
V in
+Vo
Vin
GN D
+
LOAD
C3
C1
C2
MOV
C0
GN D
①
②
Fig.4 EMC recommended circuit
FUSE
MOV
LDM1
82µH
C0
C1/C2
C3
LDM2
12µH
Selected based on the actual
input current from the customer
S20K30
680µF /50V
Refer to Sheet 1
4.7µF /50V
Note: Part ① in the Fig. 4 is for EMS test, part ② is for EMI filtering; parts ① and ② can be added based on actual requirement.
3. For more information please find the application notes on www.mornsun-power.com
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
DC/DC Converter
K78Lxx-1000R3 Series
Dimensions and Recommended Layout
Notes:
1. Packing information please refer to Product Packing Information which can be downloaded from www.mornsun-power.com. Packing
bag number: 58010116;
2. The maximum capacitive load offered were tested at nominal input voltage and full load;
3. Unless otherwise specified, parameters in this datasheet were measured under the conditions of Ta=25℃, humidity<75% with nominal
input voltage and rated output load;
4. All index testing methods in this datasheet are based on our Company’s corporate standards;
5. We can provide product customization service, please contact our technicians directly for specific information;
6. Specifications are subject to change without prior notice.
MORNSUN Guangzhou Science & Technology Co., Ltd.
Address: No. 5, Kehui St. 1, Kehui Development Center, Science Ave., Guangzhou Science City, Luogang District, Guangzhou, P. R. China
Tel: 86-20-38601850-8801
Fax: 86-20-38601272
E-mail: info@mornsun.cn
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MORNSUN Guangzhou Science & Technology Co., Ltd. reserves the copyright and right of final interpretation
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