LC78_2.0 Cost effective Series
Wide Input, Non-Isolated & Regulated, Single Output
Switching Regulator
High performance switching
regulator
Low profile
High efficiency up to 97%
Compatible with LM78
pin-out
The LC78_1.5
&
LC78_2.0 series cost effective high efficiency
switching regulators are ideally suited to replace LM78xx linear
regulators and are pin compatible.
(L*W*H=11.6*7.5*10.2)
Wide 4.5V to 30V operating
input voltage range
Short circuit protection (SCP)
No Heat Sink Required
Low Quiescent Current
Model selection:
LC78_yy-pp
LC=Series; yy=Vout; pp=output current
Example:
LC78_05-2.0
LC=Series; ##= 5Vout; pp=2.0A
Common specifications
Short circut protection:
Temperature rise at full load:
Cooling:
Output specifications
Continuous, automatic recovery
40°C MAX
Item
Test conditions
full load
Min Typ
Max
3
Units
%
Output voltage
accuracy
Free air convection
-40°C~+85°C (with derating)
-55°C ~+125°C
Output current
Operation temperature range:
Storage temperature range:
Lead temperature:
Output shorted
current limit
Vout= 0VDC
3.0
0.7
0.4
40
A
300°C MAX, 1.5mm from case for 10 sec
110°C MAX
Internal power
dissipation
W
%
Operating case temperature:
Case thermal impendance:
Temperature coefficient:
Line regulation
Vin= min. to max. at
full load
70°C/W
-40°C to +85°C ambient
0.02%/°C MAX
Load regulation
Ripple + Noise
10% to 100% load
mV
Vo=5.0VDC at 20MHz
Bandwidth
100
mVp-
p
Storage humidity range:
< 95%
+25°C 2068x103 hours
+60°C 975x103 hours
MTBF (using MIL-HDBK-217F):
Dynamic load
stability
100%<->50% load
150
mV
KHz
mA
Packing quantities:
Case material:
Potting material:
Soldering profile:
Weight:
42pcs per Tube
Switching
frequency
600
10
Non Conductive Black Plastic UL94-V0
Epoxy UL94-V0
No load input
current
265°C/10sec. MAX
1.5g
Thermal shutdown
Internal IC junction
150
°C
Max capacitance
load
100
μF
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. If you need other model, please confirm the power,
input voltage and output voltage, and then phone us.
Part Number
Input Voltage
Range [VDC]
Output Voltage
[VDC]
Output Current
Efficiency
Efficiency
[Vin. max]
Capacitive load
[uF; max]
[A]
2.0
2.0
2.0
2.0
1.5
[Vin. min]
LC78_1.8-2.0
LC78_2.5-2.0
LC78_03-2.0
LC78_05-2.0
LC78_12-1.5
4.5-30
4.5-30
4.5-30
6.5-30
15-30
1.8
2.5
3.3
5
89
91
81
84
88
91
1000
1000
1000
1000
470
92
94
97
12
94
Page 1 of 2
GAPTEC-Electronic GmbH & Co. KG
sales@gaptec-electronic.com – www.gaptec-electronic.com
LC78_2.0 – Rev. 2019-1.4
Specifications subject to change without notice.