K78XX-1000(L) Series
WIDE INPUT NON-ISOLATED & REGULATED
SINGLE OUTPUT
FEATURES
●
Efficiency up to 97%
●
Operating temperature: -40°C ~ +85°C
●
Pin-out compatible with LM78XX Linear
●
Short circuit protection, thermal shutdown
●
Low ripple and noise
●
Micro miniature SIP package
●
No heatsink required
●
Industry standard pinout
●
MTBF>2,000,000 hours
K7801-1000(L)
K78X2-1000(L)
K7802-1000(L)
K7803-1000(L)
K7805-1000(L)
K78X6-1000(L)
K7809-1000(L)
K7812-1000(L)
K7815-1000(L)
Part Number
Nominal
12
12
12
24
24
24
24
24
24
Range
4.75-26
4.75-26
4.75-28
4.75~28
6.5~32
9.0~32
12~32
16~32
20~32
RoHS
Input Voltage(VDC)
Output
Voltage
(VDC)
1.5
1.8
2.5
3.3
5.0
6.5
9.0
12
15
Current
(mA)
1000
1000
1000
1000
1000
1000
1000
1000
1000
Efficiency (%)(Typ)
Vin
(min.)
80
83
88
90
93
94
95
96
97
Vin
(max.)
71
74
80
83
88
90
92
94
94
Product Program
APPLICATIONS
The K78xx-1000(L) series high efficiency
switching regulators are ideally suited to replace
78xx linear regulators and are pin compatible.
The efficiency of up to 97% means that very little
energy is wasted as heat so there is no need for
any heatsinks with their additional space and
mounting costs.
Add suffix
“L”
for 90° bend pins, for example: K7805-1000L.
Output Specifications
Item
Output voltage accuracy
Line regulation
Load regulation*
Ripple & Noise
Short circuit input power**
Test conditions
100% full load
Vin=min. to max. at full load
10% to 100% load
20MHz bandwidth
(refer to figure 3)
Min.
Typ.
±2
±0.2
±0.4
25
0.5
Max.
±3
±0.4
±0.6
35
1.8
mVp-p
W
%
Units
MODEL SELECTION
Short circuit protection
Thermal shutdown
Internal IC junction
100% full load
Vin= min. to max.
(at full load)
Vout:1.5V~3.3V
Vout:5V~15V
Continuous, automatic
recovery
150
280
330
450
3000
2000
5
-40°C ~ +85°C ambient
8
±0.02
1000
** K7801-1000 is 4W(Max).
K7805-1000
Output Current
Out put Voltage
Product Series
°C
KHz
mA
mA
%/°C
μF
Switching frequency
Output current limit
Quiescent current
Temperature coefficient
Max capacitance load
MORNSUN 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
Fax:86-20-38601272
Http://www.mornsun-power.com
* K78X2-1000 is
±0.75%(Max),
COMMON SPECIFICATIONS
Item
Storage humidity
Operating temperature
Operating case temp.
Storage temperature
Lead temperature
Cooling
Case material
MTBF
Weight
25℃（MIL-HDBK-217F）
2000
3.7
1.5mm from case for 10 seconds
-55
Power derating (above 71°C)
-40
Test conditions
Min.
Typ.
Max.
95
85
100
125
300
Free air convection
Plastic (UL94-V0)
k hours
g
°C
Units
%
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
K78XX-1000(L)
B/2-2012
Page 1 of 4
TYPICAL CHARECTERISTICS
Temperature Derating Graph
EXTERNAL CAPACITOR TABLE
Part Number
K7801-1000(L)
K78X2-1000(L)
K7802-1000(L)
K7803-1000(L)
K7805-1000(L)
K78X6-1000(L)
K7809-1000(L)
C1
C2
(Ceramic capacitor) (Ceramic capacitor)
10µF/50V
10µF/50V
10µF/50V
10µF/50V
10µF/50V
10µF/50V
10µF/50V
10µF/50V
10µF/50V
22µF/6.3V
22µF/6.3V
22µF/6.3V
22µF/6.3V
22µF/16V
10µF/16V
10µF/16V
10µF/25V
10µF/25V
Operating Temp.(
C
)
K7812-1000(L)
K7815-1000(L)
(figure1)
TYPICAL APPLICATION CIRCUIT
+Vin
C1
GN D
1
K78XX-1000(L)
3
2
C2
+Vo ut
GN D
(figure 2)
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°C)
1
Efficiency and Output Voltage Ripple Test
2 5 .4 mm
2 5 .4 mm
1 2 .7 mm
+Vin
1
C1
DC/DC
Converter
2
3
C2
+Vout
Copper strip
Lo ad
L oad
1 0
μ
F
2 .54 mm
2 .5 4 m m
1
μ
F
C e ra m ic Tantalum
S cope
GND
Copper strip
(figure 3)
2
Start-up and Load Transient Response Test
5 0 .8 m m
+Vin
1
C1
DC/DC
Converter
2
3
C2
Copper strip
+Vout
S cope
GND
Copper strip
(figure 4)
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
K78XX-1000(L)
B/2-2012
Page 2 of 4
OUTPUT RIPPLE REDUCTION
+Vin
1
C1
DC/DC
Converter 3
2
L
+ Vout
C2
22
μ
F
GND
To reduce output ripple, it is recommended to add a LC filter in output port.
L: Recommended param eter 10μH ~ 47μH.
(figure 5)
CHARACTERISTICS CURVE
Efficiency
Efficiency VS. Vin(full load)
Efficiency(%)
100
90
80
70
60
50
40
4.75
K7801-1000
K78X2-1000
K7802-1000
K7803-1000
K7805-1000
K78X6-1000
K7809-1000
K7812-1000
K7815-1000
Ripple
Ripple VS. Vin(full load)
Ripple(mV)
30
K7801-1000
25
20
15
10
5
0
4.75
Lo ad
K78X2-1000
K7802-1000
K7803-1000
K7805-1000
K78X6-1000
K7809-1000
K7812-1000
K7815-1000
9
11
15
18
22
26
30
Vin(V)
9
11
15
18
22
26
30
Vin(V)
Efficiency VS.Load(Vin=Vin-nominal)
Efficiency(%)
100
90
80
70
60
50
40
50 100 200 300 400 500 600 700 800 900 1000
Load(mA)
K7801-1000
K78X2-1000
K7802-1000
K7803-1000
K7805-1000
K78X6-1000
K7809-1000
K7812-1000
K7815-1000
Ripple vs Load(Vin=Vin-nominal)
Ripple(mV)
30
25
20
15
10
5
0
50 100 200 300 400 500 600 700 800 9001000
Load(mA)
K7801-1000
K78X2-1000
K7802-1000
K7803-1000
K7805-1000
K78X6-1000
K7809-1000
K7812-1000
K7815-1000
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
K78XX-1000(L)
B/2-2012
Page 3 of 4
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
K78XX
RECOMMENDED FOOTPRINT
K78XX
Ф1.00
[0.039]
17.50
[0.689]
(Front View)
0.50[0.020]
1 2 3
4.10[0.161]
5.08[0.200]
K78X X-L
9.00[0.354]
Ф1.00
[0.039]
1 2 3
2.15[0.085]
0.50[0.020]
(Bottom View)
3 2 1
Note: grid 2.54*2.54mm.
11.50
[0.453]
0.30[0.012]
TUBE OUTLINE DIMENSIONS
K78XX
9.00
[0.354]
11.60[0.457]
11.40[0.449]
K78XX-L
K78XX-L
19.00[0.748]
17.50[0.689]
0.30[0.012]
20.60[0.811]
27.10[1.067]
23.40[0.921]
20.40[0.803]
(Front View)
4.10[0.161]
0.50[0.020]
5.08[0.200]
11.00[0.433]
6.60[0.260]
16.00[0.630]
11.50
[0.453]
1 2 3
(Bottom View)
FOOTP RINT DETAILS
Pin
1
2
3
Function
+Vin
GND
+Vout
Note:
Unit:mm[inch]
Pin section tolerances:±0.10mm[±0.004inch]
General tolerances:±0.25mm[±0.010inch]
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°C, humidity<75%, nominal input voltage and rated output load unless otherwise specified.
2. In this datasheet, all the test methods of indications are based on corporate standards.
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
K78XX-1000(L)
B/2-2012
Page 4 of 4
4.20[0.205]
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