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LC78_0.5 Cost effective Series
Wide Input Non-Isolated & Regulated, Single Output
Switching Regulator
Cost Effective Switching
Regulator
Low Profile
(L*W*H=11.6*6.0*10.2)
Wide 4.75V to 28V Operating
Input Range
Compatible With LM78
Pin-Out
Short Circuit Protection (SCP)
No Heat Sink Required
Low Ripple and Noise
Low No Load Input Current
Efficiency up to 95%
Common specifications
Short circut protection: Continuous, automatic recovery
Temperature rise at full load: 25°C MAX, 15°C TYP
Cooling: Free air convection
Operation temperature range: -40°C~+85°C
Storage temperature range: -55°C ~+125°C
Lead temperature: 300°C MAX, 1.5mm from case for 10 sec
Operating case temperature: 100°C MAX
Temperature coefficient: -40°C to +85°C ambient
Storage humidity range: < 95%
MTBF (using MIL-HDBK-217F): +25°C 2578x103 hours
Packing quantities: 42pcs per Tube
Case material: Non Conductive Black Plastic UL94-V0
Potting material: Epoxy UL94-V0
Weight: 1.3g
0.025%/°C TYP
+75°C 1371x103 hours
The LC78_0.5 series cost effective high efficiency switching regulators
are ideally suited to replace LM78xx linear regulators and are pin
compatible.
Model selection:
LC78_yy-pp
LC=Series; ##=Vout; pp=output current
Example:
LC78_05-0.5
LC=Series; ##= 5Vout; pp=0.5A
Output specifications
Item Test conditions Min Typ Max Units
Output voltage
accuracy
Line regulation Vin= min. to max. at
Load regulation 0% to 100% load 0.6 %
Ripple + Noise Vo=5.0VDC at 20MHz
Dynamic load
stability
Switching frequency 330 KHz
No load input
current
Thermal shutdown Internal IC junction 160 °C
Max capacitance
load
Full load ±3 %
0.5 %
full load
30 mVp-p
Bandwidth
100%-50% load ±80 mV
Vin=24VDC at 0% load 6 mA
220 μF
Part Number Input Voltage
Range [VDC]
LC78_03-0.5 4.75-28 3.3 0.5 93 84 SIP3
LC78_05-0.5 6.8-28 5.0 0.5 95 88 SIP3
LC78_12-0.5 15-28 12.0 0.5 95 93 SIP3
Add suffix “L” for 90° bend pins, for example: LC78_03-0.5L
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.
GAPTEC-Electronic GmbH & Co. KG
sales@gaptec-electronic.com – www.gaptec-electronic.com
Output Voltage
[VDC]
Output Current
[A]
Efficiency
[Vin. min]
Efficiency
[Vin. max]
LC78_0.5 – Rev. 2017-2.0
Specifications subject to change without notice.
Package
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LC78_0.5 Cost effective Series
Wide Input Non-Isolated & Regulated, Single Output
Typical characteristics
Efficiency Vs Vin (Full Load) Ripple Vs Vin (Full Load)
Output power (%)
Operating Temperature (°C)
Standard application circuit External capacitor table
Mechanical dimensions
Front view
0,70
Right
view
0,25
FOOTPRINT DETAILS
Pin Positive
1 +Vin
2 GND
3 +Vout
Part number C1
(Ceramic Capacitor)
LC78_03-0.5 10μF/50V 22μF/6.3V
LC78_05-0.5 10μF/50V 22μF/10V
C2
(Ceramic Capacitor)
Footprint details
Top view
Tube outline dimensions
Bended pins
GAPTEC-Electronic GmbH & Co. KG
sales@gaptec-electronic.com – www.gaptec-electronic.com
Note:
L=520 ± 2 mm
Devices per tube
quanttity: 42 PCS
Page 2 of 2
LC78_0.5 – Rev. 2017-2.0
Specifications subject to change without notice.
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