LMO78_0.5 Series
Wide Input Non-Isolated & Regulated, Single Positive/Negative Output
Switching Regulator
Efficiency up to 93%
Open frame SIP package
Ultra low no-load power
consumption
The LMO78_0.5A series is a high efficiency switching regulator and ideal
substitute for the LM78xx series three-terminal linear regulators. The
product is featured with high efficiency, low loss, short circuit
protection and no heat sink is required. This series is widely used in
industrial control, instrumentation, and electric power applications.
Operating temperature
range: -40°C ~ +85°C
Short circuit protection (SCP)
Common specifications
Short circuit protection:
No-load input current:
Reverse Polarity Input:
Input Filter:
Output specifications
Continuous, automatic recovery
0.2mA TYP, 1.5mA MAX
Forbidden
Item
Test conditions
Min
Typ
Max
Units
Output voltage
accuracy
100% load
• LMO78_03-0.5
• Others
2
2
4
3
%
%
Capacitor Filter
Line regulation
Load regulation
Ripple + Noise*
Input Voltage Range
10% to 100% load
0.2
0.4
20
0.4
0.6
75
%
%
Temperature rise at full load:
Cooling:
25°C MAX, 15°C TYP
Free air convection
20MHz Bandwidth
Vin=24VDC
0% -100% load
mVp-
p
Operation temperature range:
-40°C~+85°C
Power derating above 71°C
Over heat protec-
tion
Internal IC junction
170
°C
Storage temperature range:
Pin welding resistance temperature:
Operating case temperature:
Storage humidity range:
Package material:
-55°C ~+125°C
260°C MAX, 1.5mm from case for 10 sec
Switching frequency
550
850
250
KHz
mV
100°C
Transient response
deviation
Nominal input, 25%
load step change
55
< 95%RH
Plastic [UL94-V0]
Transient recovery
time
Nominal input, 25%
load step change
0.5
2
ms
MTBF:
>2,000,000 hours
+25°C MIL-HDBK-217F
Temperature
coefficient
-40 °C to +85 °C
ambient
0.03
%/°C
Weight:
1g
* Test ripple and noise by “parallel cable” method. With the load lower than 10%,
maximum ripple and noise will be 150mVp-p.
Note:
1. The max. capacitive load should be tested within the input voltage range and
under full load conditions;
2. Without any special statement, all indexes are only specific to positive output
application;
3. Unless otherwise specified, data in this datasheet should be tested under the
conditions of Ta=25°C, humidity<75% when inputting nominal voltage and
outputting rated load;
Model selection:
LMO78_yy-pp
4. All index testing methods in this datasheet are based on our Company’s
corporate standards;
LM=Series; S=case; ##=Vout; pp=output current
Example:
5. The performance indexes of the product models listed in this manual are as
above, but some indexes of non-standard model products will exceed the
above-mentioned requirements, and please directly contact with our technician
for specific information;
LMO78_05-0.5
LM= Series; S= SIP Case; ##= 5Vout; pp=0.5A
6. Specifications subject to change without prior notice.
EMC specifications
EMI
CE
CISPR22/EN55022
CISPR22/EN55022
IEC/EN61000-4-2
IEC/EN61000-4-3
IEC/EN61000-4-4
IEC/EN61000-4-6
CLASS B
CLASS B
(External circuit refer to EMC recommended circuit, 2 or EMC module application circuit)
(External circuit refer to EMC recommended circuit, 2 or EMC module application circuit)
EMI
RE
EMS
EMS
EMS
EMS
EMS
ESD
RS
Contact 4KV perf. Criteria B
10V/m
1KV
perf. Criteria A
EFT
CS
perf. Criteria B (External circuit refer to EMC recommended circuit, 1 )
3 Vr.m.s
perf. Criteria A
perf. Criteria B
Voltage dips,
short and
interruptions
immunity
IEC/EN61000-4-29 0%-70%
Page 1 of 3
GAPTEC-Electronic GmbH & Co. KG
sales@gaptec-electronic.com – www.gaptec-electronic.com
LMO78_0.5 – Rev. 2017-1.3
Specifications subject to change without notice.
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