LCW78_1.0 series
Wide Input Non-Isolated & Regulated, Single Output
Switching Regulator
500uA low quiescent current
at no load
100V surge withstand
Ultra wide 14:1 input voltage
range 5-72 VDC
Compatible with LM78
The LCW78_1.0 series is a non-isolated POL converter with an ultra wide
14:1 high input voltage range 5-72 VDC switching regulator with
standard SIP3 package, covering most of the battery ranges and the
standard power bus. This series with high efficiency and 500uA very
low quiescent current to be save the energy for the battery syetem
applications.
Pin-Out
Short circuit protection
Low output ripple & noise
High efficiency up to 96%
Common specifications
Input specifications
Item
Test conditions
Min
Typ
Max
Units
Item
Test conditions
Min
5
Typ
Max
72
Units
VDC
Short circut protection:
Cooling:
Continuous, auto-recovery
Input Voltage
Range
see selection guide
Free air convection
Intput Surge
Voltage
100mS
100
VDC
Operating Temperature
Range
up to 50°C without
derating
-40
-55
+100
110
°C
Operating Case
Temperature
Vo=5.0VDC at 20MHz
Bandwidth
°C
Output specifications
Item
Test conditions
Full load
Min
Typ
3.5
Max
3
Units
%
Storage Temperature
Range
100%-50% load
+125
70
°C
Output Voltage
Accuracy
Case Thermal
Impendance
°C/ W
°C
Output Shorted
Current Limit
Vout = 0 VDC
A
Thermal shutdown
Case Material
Internal IC junction
UL94-V0
150
Internal Power
Dissipation
1
W
%
Non conductive black plastic
Epoxy
Potting Material
Soldering Profile
Package Weight
Packing Quantities
UL94-V0
Line Voltage
Regulation
Vin = min. to max. at
full load
1
1
10sec
265
4
°C
g
Load Regulation
Ripple + Noise
10 to 100% load
%
Standard Pinned
(pcs per Tube)
40
pcs
20MHz Bandwidth
50
400
mVp-p
%/°C
Temperature
Coefficient
-40°C to +85°C
ambient
3.5
50
MTBF
Case
MIL-HDBK 217F;
25 °C
1256K hours
865K hours
Dynamic load
stability
100%<->50% load
mV
KHz
°C
50 °C
12.1*9.0*17.5 mm
Switching
frequency
Thermal shutdown
Internal IC junction
150
Example:
LCW78_05-1.0
LC = Series; W = Wide input range; 05 = 5Vout; 1.0 = 1.0A output
current
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
[A]
Efficiency typ.
48VDC Nominal [%]
Max
Capacitive Load
LCW78_03-1.0
LCW78_05-1.0
LCW78_09-1.0
LCW78_12-1.0
LCW78_24-1.0
5-72
8-72
3.3
5
1.0
1.0
1.0
1.0
0.7
81
86
91
3,300uF
3,300uF
12-72
15-72
27-72
9
2,200uF
12
24
92
96
1,000uF
470uF
Add suffix “L” for 90° bend pins, for example: LCW78_03-1.0L
Page 1 of 2
GAPTEC-Electronic GmbH & Co. KG
sales@gaptec-electronic.com – www.gaptec-electronic.com
LCW78_1.0 – Rev. 2020-1.0
Specifications subject to change without notice.