LF212S [MPD]
Ultra-Miniature, 2W Single Output SMT DC/DC Converters; 超小型， 2W单路输出SMT DC / DC转换器
| 型号： | LF212S |
| 厂家： | 
MICROPOWER DIRECT, LLC |
| 描述： | Ultra-Miniature, 2W Single Output SMT DC/DC Converters |
| 文件： | 总2页 (文件大小：240K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LF200SSeries
Ultra-Miniature, 2W
Single Output SMT
DC/DC Converters
Electrical Specifications
Specifications typical @ +25°C, nominal input voltage & rated output current, unless otherwise noted. Specifications subject to change without notice.
Input
Key Features:
Parameter
Conditions
Min.
Typ.
5.0
Max.
5.5
Units
VDC
A
• 2W Output Power
• Ultra-Miniature SMT Case
• 1,000 VDC Isolation
5 VDC Input
4.5
Input Voltage Range
12 VDC Input 10.8
24 VDC Input 21.6
12.0
24.0
13.2
26.4
0.3
• 5V, 12 & 24V Inputs
Reverse Polarity Input Current
Input Filter
Capacitor
• -40ºC to +85ºC Operation
• 6 Standard Models
Output
Parameter
Conditions
For Vin Change of 1%
Min.
Typ.
1.5
Max.
4.0
Units
%
• 2.0 MH MTBF Minimum
• Industry Standard Pin-Out
Output Voltage Accuracy
Line Regulation
1.2
1.5
%
Load Regulation (Note 1)
Ripple & Noise (20 MHz) (Note 2)
Ripple & Noise (20 MHz)
Ripple & Noise (20 MHz)
Output Power Protection
Temperature Coefficient
Output Short Circuit
General
See Model Selection Guide
50
75
150
5
mV P - P
mV P - P
mv rms
%
Over Line, Load & Temp.
120
0.01
0.02
%/ºC
Momentary (0.5 Sec.)
RoHS Compliant
Parameter
Conditions
Min.
Typ.
Max.
Units
VDC
GΩ
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Switching Frequency
Environmental
Parameter
60 Seconds 1,000
500 VDC
10
100 kHz, 1V
60
100
120
pF
70
100
kHz
Conditions
Ambient
Case
Min.
-40
Typ.
Max.
+85
Units
ºC
Operating Temperature Range
Operating Temperature Range
Storage Temperature Range
Cooling
+25
-40
+90
ºC
-40
+125
ºC
Free Air Convection
RH, Non-condensing
Humidity
95
%
MicroPower Direct
292 Page Street
Suite D
Stoughton, MA 02072
USA
Physical
Case Size
0.50 x 0.36 x 0.34 Inches (12.7 x 9.3 x 8.7 mm)
Molding (UL94-V0)
Case Material
Weight
0.05 Oz (1.5g)
Reliability Specifications
Parameter
T: (781) 344-8226
F: (781) 344-8481
E: sales@micropowerdirect.com
W: www.micropowerdirect.com
Conditions
Min.
Typ.
Max.
Units
MTBF
MIL HDBK 217F, 25ºC, Gnd Benign
2.0
MHours
Absolute Maximum Ratings
Parameter
Conditions
5 VDC Input
Min.
-0.7
-0.7
-0.7
Typ.
Max.
9.0
Units
VDC
Input Voltage Surge (1 Sec)
12 VDC Input
18.0
30.0
300
650
24 VDC Input
Lead Temperature
1.5 mm From Case For 10 Sec.
All Models
ºC
Internal Power Dissipation
mW
Caution: Exceeding Absolute Maximum Ratings may damage the module. These are not continuous operating ratings.
Model Selection Guide
Input
Output
Voltage Current
(VDC) (mA, Max) (mA, Min)
Load
Regulation
(%, Max)
Fuse Rating
Slow-Blow
(mA)
Model
Number
Efficiency
(%, Typ)
Voltage (VDC)
Nominal
Current (mA)
Current
Range
Full-Load No-Load
LF201S
LF202S
LF211S
LF212S
LF221S
LF222S
Notes:
5
4.5 - 5.5
519
488
213
201
106
101
60
60
30
30
15
15
5.0
12.0
5.0
400.0
165.0
400.0
165.0
400.0
165.0
8.0
3.0
8.0
3.0
8.0
3.0
11
11
8
77
81
78
82
78
81
1,000
1,000
500
5
4.5 - 5.5
12
12
24
24
10.8 - 13.2
10.8 - 13.2
21.6 - 26.4
21.6 - 26.4
12.0
5.0
5
500
8
200
12.0
5
200
Derating Curve
1. Load regulation is measured for an output change of 20% to
100%.
2. When measuring output ripple, it is recommended that an external
0.33 μF ceramic capacitor be placed from the +Vout pin to the -Vout
pin. For noise sensitive applications, the use of 1.5 μF capacitors
will reduce the output ripple.
3. Operation at no-load will not damage these units. However, they
may not meet all specifications.
4. The converter should be connected to a low ac-impedance source.
An input source with a highly inductive impedance may affect the
stability of the converter. In applications where the converter output
loading is high and input power is supplied over long lines, it may
be necessary to use a capacitor on the input to insure start-up.
In this case, it is recommended that a low ESR (ESR <1.0Ω at 100 kHz)
capacitor be mounted close to the converter. For 5V input units a
2.2 μF is recommended, for 12V input units, a 1.0 μF and for 24V
input models, a 0.47 μF.
5. It is recommended that a fuse be used on the input of a power
supply for protection. See the table above for the correct rating.
Board Layout
Mechanical Dimensions
Capacitive Load
Output
5 VDC
12 VDC
μF Max
47 μF
10 μF
Pin Connections
Pin
Description
1
-Vin
2
+Vin
3
No Pin
-Vout
+Vout
No Pin
No Pin
NA
4
5
6
7
8
NA = Not for electrical
connection
Notes:
• All dimensions are typical in inches (mm)
• Tolerance x.xx = 0.01 ( 0.25)
• Pin 1 is marked by a “dot” or indentation on the unit
MicroPower Direct
•
www.micropowerdirect.com
292 Page Street Ste D Stoughton, MA 02072
•
TEL: (781) 344-8226
FAX: (781) 344-8481
•
E-Mail: sales@micropowerdirect.com
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