LMS78_2.0R Series
Wide Input Non-Isolated & Regulated, Single Output
Switching Regulator
Operating temperature:
-40°C ~ +85°C
Short circuit protection
No-load input current as low
as 0.1mA
Efficiency up to 95%
The LMS78_2.0R series are high efficiency switching regulators and ideal
substitutes of LM78xx series three-terminal linear regulators. The
product is featured with high efficiency, low loss and no heat sink requi-
rement. They are widely used in industrial control, instrumentation,
and electric power applications.
Pin-out compatible with
LM78XX Linear
Meets EN62368 standards
Common specifications
Short circuit protection:
Cooling:
Output specifications
Continuous, self-recovery
Free air convection
-40°C~+85°C
Item
Test conditions
Min
Typ
Max
Units
Output voltage
accuracy
• LMS78_03-2.0R
• Others
2
2
4
3
%
%
Operating temperature range:
Storage temperature range:
Line regulation
Full load, input voltage
range
0.4
0.8
%
-55°C ~+125°C
Pin Soldering Resistance Temperature: 260°C - Soldering time: 10s (Max.)
Load regulation
Ripple + Noise*
10% to 100% load
0.5
30
1.5
75
%
Operating case temperature:
Storage humidity range:
Package material:
100°C Max.
20MHz Bandwidth
Nominal input voltage,
100% load
mVp-p
< 95%
Plastic [UL94-V0]
>2,000,000 hours
11.50*9.00*17.50 mm
3.8g
Temperature
coefficient
Operating temperature
-40 °C to +85 °C
0.03 %/°C
MTBF (@25°C, MIL-HDBK-217F):
Dimensions:
Transient response
deviation
2,5V output
80
50
150
150
mV
mV
Nominal input, 25%
load step (25%-50%-
25%, 50%-75%-50%
step)
Package weight:
Input specifications
Transient recovery
time
Nominal input, 25%
load step (25%-50%-
25%, 50%-75%-50%
step)
0.2
1
ms
Item
Test conditions
Min
Typ
0.2
Max
0.5
Units
mA
No-load input
current
Nominal input voltage,
2.5V output
Positive output
Switching frequency Full load, nominal
input
400
KHz
0.1
1
mA
Reverse Polarity
Input
Avoid / Not protected
Capacitance filter
*Test ripple and noise by “parallel cable” method.
Input Filter
EMC specifications
Example:
LMS78_05-2.0R
EMI
CE
CISPR32/EN55032
CLASS B (refer to EMC recommended circuit, ②)
LM = Series; S = SIP Case; 05 = 5Vout; 2.0 = 2A; R = Revised
EMI
RE
CISPR32/EN55032
CLASS B (refer to EMC recommended circuit, ②)
Note:
1. The maximum capacitive load offered were tested at input voltage range and
full load;
EMS
EMS
EMS
ESD
RS
IEC/EN61000-4-2
IEC/EN61000-4-3
IEC/EN61000-4-4
Contact 6KV
10V/m
perf. Criteria B
perf. Criteria A
perf. Criteria B
2. Unless otherwise specified, parameters in this datasheet were measured under
the conditions of Ta = 25°C, humidity <75% with nominal input voltage and
rated output load;
EFT
1KV
(External Circuit Refer to recommended circuit, ①)
3. All index testing methods in this datasheet are based on our Company’s
corporate standards;
EMS
EMS
Surge
CS
IEC/EN61000-4-5
(External Circuit Refer to recommended circuit, ①)
line to line 1KV
perf. Criteria B
4. We can provide product customization service, please contact our technicians
directly for specific information;
IEC/EN61000-4-6 3 Vr.m.s perf. Criteria A
5. Our products shall be classified according to ISO14001 and related environmen-
tal laws and regulations, and shall be handled by qualified units.
Page 1 of 3
LMS78_2.0R – Rev. 2020-1.1
Specifications subject to change without notice.
GAPTEC-Electronic GmbH & Co. KG
sales@gaptec-electronic.com – www.gaptec-electronic.com