Data Sheet

GAPTEC-Electronic GmbH & Co. KG
[e-mail] – www.gaptec-electronic.com
Page 1 of 2
LC78_1.0 – Rev. 2017-1.6
Specifications subject to change without notice.
LC78_1.0 Cost effective Series
Wide Input Non-Isolated & Regulated, Single Output
Cost Effective Switching
Regulator
Low Profile
(L*W*H=11.6*6.0*10.2)
Wide 4.5V to 42V Operating
Input Range
Efficiency up to 93%
Compatible With LM78
Pin-Out
Short Circuit Protection (SCP)
No Heat Sink Required
Low Ripple and Noise
Low Quiescent Current (No
Load) 200uA typ.
Switching Regulator
The LC78_1.0 series cost effective high efficiency switching regulators
are ideally suited to replace LM78xx linear regulators and are pin
compatible.
Part Number Input Voltage
Range [VDC]
Output Voltage
[VDC]
Output Current
[A]
Efficiency
[Vin. min]
Efficiency
[Vin. max]
Package
LC78_03-1.0 4.5-42 3.3 1.0 89 82 SIP3
LC78_05-1.0 6.5-42 5.0 1.0 93 86 SIP3
Add suffix “L” for 90° bend pins, for example: LC78_03-1.0L
Model selection:
LC78_yy-pp
LC=Series; yy=Vout; pp=output current
Example:
LC78_05-1.0
LC=Series; ##= 5Vout; pp=1.0A
Common specifications
Short circut protection: Continuous, automatic recovery
Temperature rise at full load: 40°C MAX
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
0.015%/°C TYP
Storage humidity range: < 95%
MTBF (using MIL-HDBK-217F): +25°C 2068x10
3
hours
+60°C 975x10
3
hours
Packing quantities: 42pcs per Tube
Case material: Non Conductive Black Plastic UL94-V0
Potting material: Epoxy UL94-V0
Weight: 1.3g
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.
Output specifications
Item Test conditions Min Typ Max Units
Output voltage
accuracy
Vin=min. to max. at
full load
±3 %
Line regulation Vin= min. to max. at
full load
0.4 %
Load regulation 0% to 100% load 0.6 %
Ripple + Noise Vo=5.0VDC at 20MHz
Bandwidth
60 mVp-p
Dynamic load
stability
100%-50% load ±150 mV
Switching frequency 400 KHz
No load input
current
250 uA
Thermal shutdown Internal IC junction 150 °C
Max capacitance
load
220 μF