SELECTION GUIDE

FEATURES

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High Efficiency for Low Power

Applications

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Pin Compatible with NME & NML

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1kVDC Isolation

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SIP & DIP Package Styles

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Single Output Rail

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3.3V, 5V and 12V Input

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3.3V, 5V, 9V, 12V and 15V Output

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UL 94V-0 Package Material

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No Heatsink Required

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Internal SMD Construction

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Toroidal Magnetics

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Fully Encapsulated

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No External Components Required

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MTTF up to 3.2 Million Hours

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PCB Mounting

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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.

Nominal

Input

Output

Output

Isolation

Package

Voltage

Voltage

Current

Efficiency Capacitance

Style

Order Code

(V)

(V)

(mA)

(%)

(pF)

kHrs

LME0305D

3.3

5

50

70

25

2767

DIP

LME0305S

3.3

5

50

70

25

2767

SIP

LME0309D

3.3

9

28

75

30

1250

DIP

LME0309S

3.3

9

28

75

30

1250

SIP

LME0312D

3.3

12

21

75

38

655

DIP

LME0312S

3.3

12

21

75

38

655

SIP

LME0315D

3.3

15

16

75

38

367

DIP

LME0315S

3.3

15

16

75

38

367

SIP

LME0503D

5

3.3

76

70

25

2637

DIP

LME0503S

5

3.3

76

70

25

2637

SIP

LME0505D

5

5

50

70

29

2279

DIP

LME0505S

5

5

50

70

29

2279

SIP

LME0509D

5

9

28

75

37

1139

DIP

LME0509S

5

9

28

75

37

1139

SIP

LME0512D

5

12

21

75

41

624

DIP

LME0512S

5

12

21

75

41

624

SIP

LME0515D

5

15

16

75

40

357

DIP

LME0515S

5

15

16

75

40

357

SIP

LME1205D

12

5

50

70

38

536

DIP

LME1205S

12

5

50

70

38

536

SIP

LME1209D

12

9

28

75

40

434

DIP

LME1209S

12

9

28

75

40

434

SIP

LME1212D

12

12

21

75

43

330

DIP

LME1212S

12

12

21

75

43

330

SIP

LME1215D

12

15

16

75

45

237

DIP

LME1215S

12

15

16

75

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.

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

1 second

Lead temperature 1.5mm from case for 10 seconds

300°C

5V

7V

15V

INPUT CHARACTERISTICS

OUTPUT CHARACTERISTICS

ABSOLUTE MAXIMUM RATINGS

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.

LME SERIES

Isolated 250mW Single Output DC-DC Converters

www.dc-dc.com

Parameter

Conditions

MIN

TYP

MAX

Units

0.25

W

Voltage Set

Point Accuracy

See tolerance envelope

Line Regulation High V

1.2

%/%

10% load to rated load,

Load Regulation

3.3V & 5V output types

15

%

10% load to rated load,

all other output types

10

Ripple & Noise

BW=DC to 20MHz, LME03 types

75

mV p-p

BW=DC to 20MHz, all other output types

100