FEATURES
● Efficiency up to 91%
K78LXX-1000R2 Series
WIDE INPUT NON-ISOLATED & REGULATED
SINGLE OUTPUT
● Operating temperature range:
-40°C ~ +85°C
● Pin-out compatible with LM78XX linears
● Short circuit protection, thermal shutdown
● Low ripple and noise
● Sip package, meet UL94-V0
● Low temperature rise
● Industry standard pinout
● Low-cost
Patent Protection RoHS
PART NUMBER SYSTEM
APPLICATIONS
K78LXX-1000R2 series high efficiency switching
regulators are ideally suited to replace 78xx linear regulators
and are pin compatible.
K78LXX-1000R2
Output Current
Output Voltage
Product Series
SELECTION GUIDE
Input Voltage(VDC)
Ouput Voltage
(VDC)
Ouput Current
(mA)
Efficiency (%,max)
Vin(Min) Vin (Max)
Model
Nominal
12
Range
K78L01-1000R2
K78LX2-1000R2
K78L02-1000R2
K78L03-1000R2
K78L05-1000R2
4.75-18
1.5
1.8
2.5
3.3
5.0
1000
1000
1000
1000
1000
76 72
12
12
12
12
4.75-18
4.75-18
4.75-18
6.5-18
78
83
86
91
75
80
83
88
INPUT SPECIFICATIONS
Item
Test Conditions
Min.
--
Typ.
--
Max.
0.27
Unit
W
No-load Input Power
Input voltage range
Reverse Polarity Input
Input Filter
Forbidden
Capacitance Filter(10μF)
OUTPUT SPECIFICATIONS
Item
Test Conditions
Min.
--
Typ.
±2
Max.
±3
Unit
%
Output Voltage accuracy
Line Regulation
100% load,input voltage range
Input voltage range
--
±0.4
±0.5
400
--
±0.75
±1.0
450
Load Regulation
From 10% to 100% full load
100% load, input Voltage Range
--
Switching Frequency
Output Current Limit
Temperature Drift
Ripple & Noise*
350
--
KHz
mA
2800
±0.025
35
--
--
%/°C
mVp-p
℃
-40℃~+85℃
20MHz bandwidth(refer to figure 4)
IC inside
--
20
Over Temperature Protection
--
--
160
Short circuit input power
Short circuit protection
Max. Capacitive Load
Input Voltage Range
--
0.3
1.8
W
Continuous, automatic recovery
-- 1000
--
µF
Note:* Ripple and noise tested by “parallel cable” method. See detailed operation instructions at Testing of Power Converter section, application notes.
The copyright and authority for the interpretation of the products are reserved by MORNSUN
K78LXX-1000R2
A/0-2012