LME1212S [CANDD]
Isolated 250mW Single Output DC-DC Converters; 250mW的隔离单输出DC-DC转换器
| 型号： | LME1212S |
| 厂家： | 
C&D TECHNOLOGIES |
| 描述： | Isolated 250mW Single Output DC-DC Converters |
| 文件： | 总2页 (文件大小：167K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LME SERIES
Isolated 250mW Single Output DC-DC Converters
SELECTION GUIDE
Nominal
Input
Output
Output
Current
Isolation
Package
Style
1
Voltage
Voltage
Efficiency Capacitance
MTTF
Order Code
(V)
(V)
(mA)
(%)
(pF)
kHrs
LME0305D
LME0305S
LME0309D
LME0309S
LME0312D
LME0312S
LME0315D
LME0315S
LME0503D
LME0503S
LME0505D
LME0505S
LME0509D
LME0509S
LME0512D
LME0512S
LME0515D
LME0515S
LME1205D
LME1205S
LME1209D
LME1209S
LME1212D
LME1212S
LME1215D
LME1215S
3.3
3.3
3.3
3.3
3.3
3.3
3.3
3.3
5
5
5
5
5
5
5
9
50
50
28
28
21
21
16
16
76
76
50
50
28
28
21
21
16
16
50
50
28
28
21
21
16
16
70
70
75
75
75
75
75
75
70
70
70
70
75
75
75
75
75
75
70
70
75
75
75
75
75
75
25
25
30
30
38
38
38
38
25
25
29
29
37
37
41
41
40
40
38
38
40
40
43
43
45
45
2767
2767
1250
1250
655
655
367
367
2637
2637
2279
2279
1139
1139
624
624
357
357
536
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
DIP
SIP
9
12
12
15
15
3.3
3.3
5
5
9
9
12
12
15
15
5
5
9
FEATURES
■ High Efficiency for Low Power
Applications
■ Pin Compatible with NME & NML
■ 1kVDC Isolation
■ SIP & DIP Package Styles
■ Single Output Rail
■ Power Density 0.36W/cm
■ 3.3V, 5V and 12V Input
■ 3.3V, 5V, 9V, 12V and 15V Output
■ Footprint from 0.69cm
■ UL 94V-0 Package Material
■ No Heatsink Required
■ Internal SMD Construction
■ Toroidal Magnetics
5
5
5
5
3
5
12
12
12
12
12
12
12
12
536
434
434
330
330
237
237
2
9
12
12
15
15
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.
■ Fully Encapsulated
■ No External Components Required
■ MTTF up to 3.2 Million Hours
■ PCB Mounting
INPUT CHARACTERISTICS
Parameter
Conditions
MIN
2.97
4.5
TYP
3.3
5
MAX
3.63
5.5
Units
Continuous operation, 3.3V input types
Voltage Range Continuous operation, 5V input types
■ Custom Solutions Available
V
Continuous operation, 12V input types
10.8
12
13.2
DESCRIPTION
OUTPUT CHARACTERISTICS
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.
Parameter
Conditions
TA= 0°C to 70°C
MIN
TYP
MAX
0.25
Units
W
Rated Power2
Voltage Set
See tolerance envelope
Point Accuracy
Line Regulation High VIN to low VIN
10% load to rated load,
1.2
15
%/%
%
3.3V & 5V output types
Load Regulation
10% load to rated load,
10
all other output types
BW=DC to 20MHz, LME03 types
BW=DC to 20MHz, all other output types
75
100
Ripple & Noise
mV p-p
ABSOLUTE MAXIMUM RATINGS
Short-circuit duration3
1 second
300°C
5V
7V
15V
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 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 TA=25°C, nominal input voltage and rated output current unless otherwise specified.
www.dc-dc.com
LME SERIES
Isolated 250mW Single Output DC-DC Converters
ISOLATION CHARACTERISTICS
PIN CONNECTIONS
Parameter
Conditions
MIN
1000
1
TYP
MAX Units
VDC
8 Pin DIP
PIN
4 Pin SIP
PIN
1
Isolation Test Voltage
Resistance
Flash tested for 1 second
Viso=500VDC
1
4
5
7
GND
GND
VIN
0V
GW
VIN
+V
0V
2
3
GENERAL CHARACTERISTICS
Parameter
4
+V
Conditions
MIN
TYP
MAX Units
Switching Frequency
All input types
100
kHz
TEMPERATURE CHARACTERISTICS
Parameter
Specification
Storage
Conditions
MIN
0
–55
TYP
MAX Units
All output types
70
°C
°C
150
Cooling
Free air convection
PERFORMANCE CHARACTERISTICS
tolerance envelope
temperature derating graph
0.500
0.375
0.250
0.125
0
+10%
+5%
+2.5%
-2.5%
-7.5%
V nominal
Safe Operating Area
10
50
100
–40
0
50 70 100 125 150
Output Load Current (%)
Ambient Temperature (°C)
MECHANICAL DIMENSIONS
11.50
7.62
8 Pin DIP
LME0505D
YYWW
1
4
5
6.80
9.80
7.62
0.25±0.05
0.25±0.05
7
4.1
0.50±0.05
5.08
1.9 Printed Face
11.50
4 Pin SIP
LME0505S
YYWW
6.00
1.25
10.0
7.62
0.50±0.05
0.50±0.05
4.1
1 2 3 4
All dimensions in mm XX.XX ±0.25mm. All pins on a
2.54mm pitch and within ±0.25mm of true position.
C&D Technologies (NCL) Limited reserve the right to alter or improve the
specification, internal design or manufacturing process at any time, without
notice. Please check with your supplier or visit our web site to ensure that
you have the current and complete specification for your product before use.
C&D Technologies (NCL) Ltd
Tanners Drive, Blakelands North
Milton Keynes MK14 5BU, England
Tel: +44 (0)1908 615232
Fax:+44 (0)1908 617545
email: info@cdtechno-ncl.com
C&D Technologies (NCL), Inc.
5816 Creedmoor Road, Raleigh
NC 27612, USA
Tel: +1 (919) 571-9405
Fax: +1 (919) 571-9262
© C&D Technologies (NCL) Limited 2001
NDC LME.2
email: info@us.cdtechno-ncl.com
No part of this publication may be copied, transmitted or stored in a
retrieval system or reproduced in any way including, but not limited to,
photography, photocopy, magnetic or other recording means, without prior
written permission from C&D Technologies (NCL) Limited.
www: http://www.dc-dc.com
Instructions for use are available from www.dc-dc.com
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