K78XX-2000(L) Series
WIDE INPUT NON-ISOLATED & REGULATED
SINGLE OUTPUT
FEATURES
●
Efficiency up to 92%,No heatsink required
●
2A large current output
●
Operating temperature : -40°C ~ +85°C
●
Short circuit protection, thermal shutdown
●
Low ripple and noise
●
Micro miniature SIP package, meet
UL94-V0 requirement
●
Ultra low power loss
●
Industry standard pinout
●
Pin-out compatible with LM78XX Linear
●
MTBE>2000,000Hours
RoHS
Input Voltage(VDC)
Output
Voltage
(VDC)
1.5
1.8
2.5
3.3
5
6.5
Current
(mA)
2000
2000
2000
2000
2000
2000
Efficiency (%)(Typ.)
Vin
(min.)
79
81
85
87
91
92
Vin
(max.)
76
79
83
86
88
91
PRODUCT PROGRAM
Part Number
Nominal
K7801-2000(L)
K78X2-2000(L)
K7802-2000(L)
K7803-2000(L)
K7805-2000(L)
K78X6-2000(L)
12
12
12
12
12
12
Range
4.75-18
4.75-18
4.75-18
4.75-18
7-18
8.5-18
Add suffix
“L”
for 90° bend pins, for example: K7805-2000L.
OUTPUT SPECIFICATIONS
Item
Test conditions
100% full load, input voltage
range
Vin=min. to max, at full load
10% to 100% load
20MHz bandwidth
(refer to figure 6)
Min.
Typ.
±2
±0.5
±0.5
25
0.5
Max.
±3
±0.75
±1.0
45
1.8
mVp-p
W
%
Units
APPLICATIONS
Upgraded K78xx-2000(L) series switching
regulators are ideal replacement for K78xx
linear regulators and LDOs. The efficiency of
up to 92% means that very little energy is
wasted as heat so there is no need for any
heat sinks with their additional space and
mounting costs. They are widely used in
industrial control, instrumentation, and electric
power applications.
Output voltage accuracy
Line regulation
Load regulation
Ripple & Noise*
Short circuit input power
Short circuit protection
Thermal shutdown
Output current limit
Switching frequency
Quiescent current
Continuous, auto-recovery
Internal IC junction
150
5000
Full load, input voltage range
300
340
5
380
10
±0.03
1000
°C
mA
KHz
mA
%/°C
μF
Temperature coefficient -40°C ~ +85°C ambient
MODEL SELECTION
Max capacitance load
*Test ripple and noise by
“parallel
cable” method.
K7805-2000
O utp ut Curren t
O utpu t Voltag e
P ro du ct Se rie s
COMMON SPECIFICATIONS
Operating temp. range
Operating case temp.
Storage temp. range
Cooling
Lead temperature**
-40~+85
℃(above
71°C power derating)
+100
℃(max)
-55~+125
℃
Free air convection
300
℃(max)
≤
95%
Plastic(UL94-V0)
> 2000k hours
(25℃,MIL-HDBK-217F)
4.0g
EN55022
EN55022
EN61000-4-2
Criteria B
CLASS B
CLASS B
Level 3
6kV/8kV perf.
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: 86-20-28203030
Fax:86-20-28203068
Http://www.mornsun-power.com
Storage humidity range
Case material
MTBF
Weight
Conducted emissions (Refer to Figure 5)
Radiated emissions
ESD
**1.5mm from case for 10 seconds
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
K78XX-2000(L)
A/2 -2011
Page 1 of 4
TYPICAL CHARECTERISTICS
Temperature Derating Graph
EXTERNAL CAPACITOR TABLE
Part Number
K7801-2000(L)
K78X2-2000(L)
K7802-2000(L)
K7803-2000(L)
K7805-2000(L)
C1
(Ceramic capacitor)
10µF/25V
10µF/25V
10µF/25V
10µF/25V
10µF/25V
10µF/25V
C2
(Ceramic capacitor)
22µF/6.3V
22µF/6.3V
22µF/6.3V
22µF/6.3V
22µF/16V
22µF/16V
Operating Temp.(
C
)
(figure 1)
TYPICAL APPLICATION CIRCUIT
1
K78XX-2000(L)
3
C1
GND
2
K78X6-2000(L)
+Vin
+Vout
C2
GND
(figure 2)
Note:
1. C1 and C2 are required and should be fitted close to the converter pins.
2. The capacitance of C1and 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.
INPUT FILTER CIRCUIT CONNECT
10uH-47uH
+Vin
10uF
10uF
Vin
Vo
+Vout
GND
GND
(figure 3)
OUTPUT FILTER CIRCUIT CONNECT
10uH-47uH
GND
+Vin
10uF
Vin
GND
Vo
10uF
22uF
RL
GND
(figure 4)
EMC RECOMMENDED CIRCUIT
1mH
+Vin
2.2u F
330 uF
GND
1 uF
GND
(figure 5)
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
K78XX-2000(L)
A/2 -2011
Page 2 of 4
Vin
GND
Vo
+Vo ut
1mH
TEST CONFIGURATIONS (TA=25°C)
1
Efficiency and Output Voltage Ripple Test
2 5.4 mm
2 5.4 mm
12.7mm
+Vin
1
C1
DC/DC
Converter
2
3
C2
+Vou t
Cop pe r s trip
Sc ope
Load
K7801-2000
K78X2-2000
K7802-2000
K7803-2000
K7805-2000
K78X6-2000
K7801-2000
K78X2-2000
K7802-2000
K7803-2000
K7805-2000
K78X6-2000
10
μ
F
Ce ramic Tan talum
GND
Cop pe r s trip
(figure 6)
2
Start-up and Load Transient Response Test
5 0.8 m m
+Vin
1
C1
DC/DC
Converter
2
3
C2
Copper strip
+Vo ut
2 . 54 m m
2 .54 mm
1
μ
F
Scope
GND
Copper strip
(figure 7)
CHARACTERISTICS CURVE
Efficiency
Efficiency VS.Vin (full load)
Efficiency(%)
100
95
90
K7801-2000
85
K78X2-2000
80
K7802-2000
75
K7803-2000
70
K7805-2000
65
60
K78X6-2000
55
50
4.75 5 6 6.5 7.2 8 9 10 12 15 18 20 Vin(V)
Ripple
Ripple VS. Vin(full load)
Ripple(mV)
45
40
35
30
25
20
15
10
5
0
4.75 5 6 6.5 7.2 8 9 10 12 15 18 20 Vin(V)
Efficiency VS. Load(Vin=12V)
Efficiency(%)
100
95
90
85
80
75
70
65
60
55
50
200 400 600 800 1000 1200 1400 1600 1800 2000
Ripple VS. Load(Vin=12V)
Ripple(mV)
45
40
K7801-2000
K78X2-2000
K7802-2000
K7803-2000
K7805-2000
K78X6-2000
35
30
25
20
15
10
5
0
Load(mA)
200 400 600 800 1000 1200 1400 1600 1800 2000
Load(mA)
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
K78XX-2000(L)
A/2 -2011
Page 3 of 4
Lo ad
OUTLINE DIMENSIONS & FOOTPRINT DETAILS
MECHANICAL DIMENSIONS
K78XX-2000
RECOMMENDED FOOTPRINT
K78XX-2000
5.08[0.200]
Ф1.00
[Ф0.039]
1 2 3
9.00
[0.354]
2.15[0.085]
17.50
[0.689]
0.50[0.020]
4.10[0.161]
5.08[0.200]
11.50
[0.453]
0.30[0.012]
11.50
[0.453]
K78XX-2000L
5.08[0.200]
17.50[0.689]
1.35[0.053]
11.50[0.453]
Function
+Vin
GND
+Vout
K78XX-2000L
11.60 [0.457]
23.60 [0.929]
20.60 [0.811]
1 2 3
Ф1.00
[Ф0.039]
9.00[0.354]
2.15[0.085]
0.50[0.020]
(Bottom View )
Note:
grid:2.54*2.54mm.
FOO TPRINT DETAIL S
Note:
Unit:mm[inch]
Pin section tolerances: 0.10mm[ 0.004inch]
General tolerances: 0.25mm[ 0.010inch]
Pin
1
2
3
K78XX-2000L
9.00
[0.354]
TUBE OUTLINE DIMENSIONS
K78XX-2000
11.20 [0.441]
19.00[0.748]
17.50[0.689]
0.30[0.012]
26.20 [0.031]
20.20 [0.795]
3 2 1
4.10[0.161]
0.50[0.020]
5.08[0.200]
11.20 [0.441]
16.20 [0.638]
6.20 [0.244]
11.50
[0.453]
1 2 3
(Botto m Vi ew)
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. Only typical models listed, other models may be different, please contact our technical person for more details.
3. 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-2000(L)
A/2 -2011
Page 4 of 4
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