Data Sheet

GAPTEC-Electronic GmbH & Co. KG
[e-mail] – www.gaptec-electronic.com
Page 1 of 2
LC78_3.0 – Rev. 2013-1.1
Specifications subject to change without notice.
High performance switching
regulator
Low profile
(L*W*H=11.6*7.5*10.2)
Wide 4.5V to 28V input
voltage range
High efficiency up to 95%
Compatible with LM78
pin-out
Short circuit protection (SCP)
Low output ripple & noise
LC78_3.0 Cost effective Series
Switching Regulator
The LC78_3.0 series cost effective high efficiency switching regulators
are ideally suited to replace LM78xx linear regulators and are pin
compatible.
Wide Input, Non-Isolated & Regulated, Single Output
Part Number Input Voltage
Range [VDC]
Output Voltage
[VDC]
Output Current
[A]
Efficiency
[Vin. min]
Efficiency
[Vin. max]
Capacitive load
[uF; max]
LC78_1.8-3.0 4.5-28 1.8 3.0 87 84 220
LC78_2.5-3.0 4.5-28 2.5 3.0 90 87 220
LC78_03-3.0 4.5-28 3.3 3.0 93 90 220
LC78_05-3.0 6.5-28 5 3.0 95 92 220
Model selection:
LC78_yy-pp
LC=Series; yy=Vout; pp=output current
Example:
LC78_05-3.0
LC=Series; ##= 5Vout; pp=3.0A
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 (with derating)
Storage temperature range: -55°C ~+125°C
Lead temperature: 300°C MAX, 1.5mm from case for 10 sec
Operating case temperature: 110°C MAX
Case thermal impendance: 70°C/W
Temperature coefficient: -40°C to +85°C ambient
0.02%/°C MAX
Storage humidity range: < 95%
MTBF (using MIL-HDBK-217F): +25°C 1680x10
3
hours
+60°C 786x10
3
hours
Packing quantities: 42pcs per Tube
Case material: Non Conductive Black Plastic UL94-V0
Potting material: Epoxy UL94-V0
Soldering profile: 265°C/10sec. MAX
Weight: 2.3g
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
full load ±3 %
Output current 0 3.0 A
Output current limit 5.0 A
Internal power
dissipation
0.9 W
Line regulation Vin= min. to max. at
full load
50 mV
Load regulation 10% to 100% load 40 mV
Ripple + Noise 20MHz Bandwidth 150 mVp-p
Dynamic load
stability
100%<->50% load
(50mA/uS)
±50 mV
Switching frequency 150 KHz
No load input
current
250 uA
Thermal shutdown Internal IC junction 150 °C
Max capacitance
load
220 μF
RoHS