LME78_2.0 Series
Wide Input Non-Isolated & Regulated, Single Output
Switching Regulator
High efficiency up to 96%
Operating temperature range:
-40°C ~ +100°C
Short circuit protection (SCP)
High voltage input range, up
to 36V
3PIN SIP package
The LME78_2.0 are high efficiency switching regulators and ideal
substitutes of LM78xx series three-terminal linear regulators. The product
is featured with high efficiency, low loss, short circuit protection and no
heat sink requirement. They are widely used in industrial control, instru-
mentation, and electric power applications.
Non isolated
Very low standby current
UL94V-0 package material
Common specifications
Short circuit protection:
Thermal impedance:
Output specifications
Hiccup, automatic recovery
Item
Test conditions
Min
Typ
Max Units
34°C/W, MIN
Mounting at FR4 (1.18*1.18inch) PCB
Voltage accuracy
Line regulation
Load regulation
2
%
%
0.5
Cooling:
Nature convection
0% to 100% load
• 5VDC input
• 24VDC input
- for Vo≥5.0VDC
- for
Operation temperature range:
-40°C~+100°C
(see temperature derating curve)
1.0
%
1.0
1.5
%
%
Storage temperature range:
Soldering temperature:
Maximum case temperature:
Storage humidity range:
Package material:
-55°C ~+125°C
Vo≤3.3VDC
260°C MAX, 1.5mm from case for 10 sec
105°C
10% to 100% load
• 24VDC input
1.0
%
< 95%RH
Ripple + Noise*
20MHz bandwidth
- for Vo≤6.5VDC
- for Vo≥9VDC
Plastic [UL94-V0]
50
75
mVpk-pk
mVpk-pk
MTBF (MIL-HDBK-217F @25°C):
• 5VDC input: 16Mhrs, min
• 24VDC input: 2.6Mhrs, min
Switching frequency • 5VDC input
• 24VDC input
1200
410
KHz
KHz
Safety standard (design to meet):
Weight:
IEC/EN 60950-1, IEC/EN 62368-1
Temperature Drift
Coefficient
0.02
%/°C
2.4g
Dimensions:
14*7.5*10.1mm
Transient response
deviation
Nominal input,
25% load step change
(75%-50%-25% of Io)
3
%
Input specifications
Transient recovery
time
Nominal input,
25% load step change
(75%-50%-25% of Io)
150
µs
Item
Test conditions
Min Typ
Max Units
Input surge voltage
• 5VDC input
• 24VDC input
6
40
VDC
VDC
Over load protection • 5VDC input
• 24VDC input
8.5
3.5
A
A
Start up time
nominal Vin, constant
resistive load
5
ms
* Ripple and noise measured with a 0.1µF ceramic capacitor.
Input reflected
ripple current*
35
mA pk-pk
Input Filter
Capacitor Filter
EMC specifications
EMI
CE
EN55032
CLASS B
CLASS B
* Measured through a source indicator L1 (12µH) and a source capacitor C1 (10µH)
at nominal input and full load.
EMI
RE
EN55032
EMS
EMS
EMS
EMS
EMS
EMS
ESD
RS
IEC61000-4-2
IEC61000-4-3
IEC61000-4-4
IEC61000-4-5
IEC61000-4-6
IEC61000-4-8
perf. Criteria A
perf. Criteria A
perf. Criteria A
perf. Criteria A
perf. Criteria A
perf. Criteria A
Example:
LME78_05-2.0
EFT*
Surge*
CS
LM= Series; E= cost effective, 05= 5Vout; pp=2.0A
Note:
1. Do not operate exceeding the absolut maximum rating, it will cause damage;
2. Operation unter no-load conditions will not damage these devices, however
they may not meet all listed specifications;
PFMF
*
An external filter capacitor and TVS is required if the module has to meet
IEC61000-4-4 and IEC61000-4-5.
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;
4. All index testing methods in this datasheet are based on our Company’s
corporate standards;
5. Specifications subject to change without prior notice.
Page 1 of 3
GAPTEC-Electronic GmbH & Co. KG
sales@gaptec-electronic.com – www.gaptec-electronic.com
LME78_2.0 – Rev. 2020-1.1
Specifications subject to change without notice.