LF321RW [MPD]
Wide Input, 3W SMT Single & Dual Output DC/DC Converters; 宽输入， 3W SMT单，双输出DC / DC转换器
| 型号： | LF321RW |
| 厂家： | 
MICROPOWER DIRECT, LLC |
| 描述： | Wide Input, 3W SMT Single & Dual Output DC/DC Converters |
| 文件： | 总2页 (文件大小：215K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LF300RW Series
Wide Input, 3W SMT
Single & Dual Output
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
Parameter
Key Features:
• 3W Output Power
Conditions
12 VDC Input
24 VDC Input
Min.
4.5
8.0
Typ.
6.0
12.0
24.0
Max.
8.0
16.0
32.0
0.5
Units
• UL Approved (File E245422)
• Wide 2:1 Inputs
Input Start Voltage
VDC
48 VDC Input 16.0
Reverse Polarity Input Current
Short Circuit Input Power
Input Filter
A
mW
• Miniature SMT Case
• Tight Line/Load Regulation
• 1,500 VDC Isolation
• -40ºC to +70ºC Operation
• 21 Standard Models
• 1.0 MH MTBF Minimum
• Industry Standard Pin-Out
1,500
π (Pi) Filter
Output
Parameter
Output Voltage Accuracy
Output Voltage Accuracy
Line Regulation
Conditions
Min.
Typ.
0.5
0.5
0.1
0.3
50
Max.
1.0
1.0
0.3
1.0
75
Units
%
%
%
%
mV P - P
mV P - P
mV rms
%
Dual Output, Balanced Load
For Vin = Min to Max
Iout = 20% to 100%
Load Regulation
Ripple & Noise (20 MHz) (Note 1)
Ripple & Noise (20 MHz)
Ripple & Noise (20 MHz)
Output Power Protection
Transient Response Time (Note 2)
Transient Response Deviation
Temperature Coefficient
Output Short Circuit
General
100
10
120
250
2.0
0.01
500
6.0
0.02
μS
%
%/ºC
25% Load Step Change
Continuous
Parameter
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Switching Frequency
Environmental
Conditions
60 Seconds
1,000 VDC
100 kHz, 1V
Min.
1,500
1,000
Typ.
Max.
Units
VDC
MΩ
pF
RoHS Compliant
65
300
100
kHz
Parameter
Conditions
Min.
Typ.
+25
+25
Max.
+71
+90
Units
ºC
ºC
Operating Temperature Range
Operating Temperature Range
Storage Temperature Range
Cooling
Ambient
Case
-40
-40
-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
Case Material
Weight
1.27 x 0.74 x 0.40 Inches (32.3 x 28.8 x 10.2 mm)
Non-Conductive Black Plastic (UL94-V0)
0.35 Oz (10g)
Reliability Specifications
Parameter
MTBF
Safety Standards
Safety Approvals
T: (781) 344-8226
F: (781) 344-8481
E: sales@micropowerdirect.com
W: www.micropowerdirect.com
Conditions
MIL HDBK 217F, 25ºC, Gnd Benign
Min.
1.0
Typ.
Max.
Units
MHours
UL 1950, EN 60950, IEC 60950
UL, cUL; File No. E245422
Absolute Maximum Ratings
Parameter
Conditions
12 VDC Input
24 VDC Input
48 VDC Input
1.5 mm From Case For 10 Sec.
All Models
Min.
-0.7
-0.7
-0.7
Typ.
Max.
25.0
50.0
100.0
260
Units
Input Voltage Surge (1 Sec)
VDC
Lead Temperature
Internal Power Dissipation
ºC
mW
2500
Caution: Exceeding Absolute Maximum Ratings may damage the module. These are not continuous operating ratings.
Model Selection Guide
Input
Current (mA)
Output
Fuse Rating
Slow-Blow
(mA)
Model
Efficiency
(%, Typ)
Voltage (VDC)
Reflected
Voltage Current
(VDC) (mA, Max) (mA, Min)
Current
Number
Ripple
(mA, Typ)
25
Nominal
Range
Full-Load No-Load
LF301RW
LF302RW
LF303RW
LF304RW
LF305RW
LF306RW
LF307RW
LF311RW
LF312RW
LF313RW
LF314RW
LF315RW
LF316RW
LF317RW
LF321RW
LF322RW
LF323RW
LF324RW
LF325RW
LF326RW
LF327RW
Notes:
12
12
12
12
12
12
12
24
24
24
24
24
24
24
48
48
48
48
48
48
48
9.0 - 18.0
9.0 - 18.0
9.0 - 18.0
9.0 - 18.0
9.0 - 18.0
9.0 - 18.0
9.0 - 18.0
18.0 - 36.0
18.0 - 36.0
18.0 - 36.0
18.0 - 36.0
18.0 - 36.0
18.0 - 36.0
18.0 - 36.0
36.0 - 75.0
36.0 - 75.0
36.0 - 75.0
36.0 - 75.0
36.0 - 75.0
36.0 - 75.0
36.0 - 75.0
257
316
305
305
321
309
309
127
156
151
151
158
152
152
63
20
20
20
20
20
20
20
5
5
5
5
5
3.3
5.0
12.0
15.0
5.0
12.0
15.0
3.3
700.0
600.0
250.0
200.0
300.0
125.0
100.0
700.0
600.0
250.0
200.0
300.0
125.0
100.0
700.0
600.0
250.0
200.0
300.0
125.0
100.0
70.0
60.0
25.0
20.0
30.0
12.5
10.0
70.0
60.0
25.0
20.0
30.0
12.5
10.0
70.0
60.0
25.0
20.0
30.0
12.5
10.0
75
79
82
82
78
81
81
76
80
83
83
79
82
82
76
80
83
83
79
82
82
750
750
750
750
750
750
750
350
350
350
350
350
350
350
200
200
200
200
200
200
200
25
25
25
25
25
25
15
15
15
15
15
15
15
10
10
10
5.0
12.0
15.0
5.0
12.0
15.0
3.3
5
5
3
78
3
5.0
75
3
12.0
15.0
5.0
12.0
15.0
75
3
10
10
10
10
79
3
79
3
76
3
Derating Curve
1. When measuring output ripple, it is recommended that an external 0.47 μF ceramic
capacitor be placed from the +Vout pin to the -Vout pin for single output units and
from each output to common for dual output units. For noise sensitive applications,
the use of 3.3 μF capacitors will reduce the output ripple.
2. Transient recovery is measured to within a 1% error band for a load step change
of 75% to 100%.
3. Operation at no-load will not damage these units. However, they may not meet all
specifications.
4. Dual output units may be connected to provide a 24 VDC or 30 VDC output. To do
this, connect the load across the positive (+Vout) and negative (-Vout) outputs and
float the output common.
5. 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 ap-
plications 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 12V input units a 3.3 μF is recommended, and
for 24V & 48V units a 1.5 μF.
6. It is recommended that a fuse be used on the input of a power supply for protec-
tion. See the table above for the correct rating.
Mechanical Dimensions
Pin Connections
Capacitive Load
Pin
1
Single
-Vin
-Vin
NC
Dual
-Vin
Single Output Dual Output
μF Max
μF Max
2
-Vin
4,700
180
3
NC
10
11
12
13
14
15
22
23
24
NC
Common
NC
Board Layout
NC
NC
-Vout
+Vout
NC
+Vout
NC
-Vout Common
NC
NC
+Vin
+Vin
+Vin
+Vin
NC: No 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
相关型号：
©2020 ICPDF网 联系我们和版权申明