LME Datasheet, PDF (1/2 Pages) C&D Technologies – Isolated 250mW Single Output DC-DC Converters

LME SERIES
Isolated 250mW Single Output DC-DC Converters
FEATURES
s High Efficiency for Low Power
Applications
s Pin Compatible with NME & NML
s 1kVDC Isolation
s SIP & DIP Package Styles
s Single Output Rail
s Power Density 0.36W/cm³
s 3.3V, 5V and 12V Input
s 3.3V, 5V, 9V, 12V and 15V Output
s Footprint from 0.69cm²
s UL 94V-0 Package Material
s No Heatsink Required
s Internal SMD Construction
s Toroidal Magnetics
s Fully Encapsulated
s No External Components Required
s MTTF up to 3.2 Million Hours
s PCB Mounting
s Custom Solutions Available
DESCRIPTION
The LME series of DC-DC converters are
optimised for low-power operation. Due to
the low quiescent current they are able to
offer efficiencies up to 75%. The use of
advanced magnetics ensures a minimal
quiescent current of around 2.5mA which
ensures that efficiency is maximised in low
power applications. They are ideally suited
to generating a negative supply where only
a positive rail exists.
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SELECTION GUIDE
Order Code
Nominal
Input
Voltage
(V)
Output
Voltage
(V)
Output
Current
(mA)
Isolation
Efficiency Capacitance
(%)
(pF)
MTTF¹
kHrs
Package
Style
LME0305D
3.3
5
50
70
LME0305S
3.3
5
50
70
LME0309D
3.3
9
28
75
LME0309S
3.3
9
28
75
LME0312D
3.3
12
21
75
LME0312S
3.3
12
21
75
LME0315D
3.3
15
16
75
LME0315S
3.3
15
16
75
LME0503D
5
3.3
76
70
LME0503S
5
3.3
76
70
LME0505D
5
5
50
70
LME0505S
5
5
50
70
LME0509D
5
9
28
75
LME0509S
5
9
28
75
LME0512D
5
12
21
75
LME0512S
5
12
21
75
LME0515D
5
15
16
75
LME0515S
5
15
16
75
LME1205D
12
5
50
70
LME1205S
12
5
50
70
LME1209D
12
9
28
75
LME1209S
12
9
28
75
LME1212D
12
12
21
75
LME1212S
12
12
21
75
LME1215D
12
15
16
75
LME1215S
12
15
16
75
25
2767
DIP
25
2767
SIP
30
1250
DIP
30
1250
SIP
38
655
DIP
38
655
SIP
38
367
DIP
38
367
SIP
25
2637
DIP
25
2637
SIP
29
2279
DIP
29
2279
SIP
37
1139
DIP
37
1139
SIP
41
624
DIP
41
624
SIP
40
357
DIP
40
357
SIP
38
536
DIP
38
536
SIP
40
434
DIP
40
434
SIP
43
330
DIP
43
330
SIP
45
237
DIP
45
237
SIP
When operated with additional external load capacitance the rise time of the input voltage will determine the
maximum external capacitance value for guaranteed start up. The slower the rise time of the input voltage the
greater the maximum value of the additional external capacitance for reliable start up.
INPUT CHARACTERISTICS
Parameter
Conditions
MIN TYP MAX Units
Continuous operation, 3.3V input types 2.97 3.3 3.63
Voltage Range Continuous operation, 5V input types
4.5
5
5.5
V
Continuous operation, 12V input types 10.8 12 13.2
OUTPUT CHARACTERISTICS
Parameter
Conditions
MIN TYP MAX Units
Rated Power² T_A= 0°C to 70°C
Voltage Set
Point Accuracy
See tolerance envelope
0.25 W
Line Regulation High V_IN to low V_IN
10% load to rated load,
Load Regulation ^{3.3V & 5V output types}
10% load to rated load,
all other output types
1.2 %/%
15
%
10
Ripple & Noise ^{BW=DC to 20MHz, LME03 types}
BW=DC to 20MHz, all other output types
75 _{mV p-p}
100
ABSOLUTE MAXIMUM RATINGS
Short-circuit duration³
Lead temperature 1.5mm from case for 10 seconds
Input voltage VIN, LME03 types
Input voltage VIN, LME05 types
Input voltage VIN, LME12 types
1 second
300°C
5V
7V
15V
1 Calculated using MIL-HDBK-217F with nominal input voltage at full load.
2 See derating curve
3 Supply voltage must be discontinued at the end of the short circuit duration.
All specifications typical at T_A=25°C, nominal input voltage and rated output current unless otherwise specified.