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