LF303RU [MPD]
Very Wide Input, 3W SMT Single & Dual Output DC/DC Converters; 很宽的输入， 3W SMT单，双输出DC / DC转换器
| 型号： | LF303RU |
| 厂家： | 
MICROPOWER DIRECT, LLC |
| 描述： | Very Wide Input, 3W SMT Single & Dual Output DC/DC Converters |
| 文件： | 总2页 (文件大小：233K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LF300RU Series
Very 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
Conditions
24 VDC Input
48 VDC Input
Min.
4.5
Typ.
6.0
Max.
8.5
Units
Key Features:
• 3W Output Power
Input Start Voltage
VDC
8.5
12.0
17.0
1.0
• Wide 4:1 Inputs
Reverse Polarity Input Current
Short Circuit Input Power
Input Filter
A
• Miniature SMT Case
• Tight Line/Load Regulation
• 1,500 VDC Isolation
• -40ºC to +71ºC Operation
• 14 Standard Models
• 1.0 MH MTBF Minimum
• Industry Standard Pin-Out
2,000
mW
π (Pi) Filter (Meets EN55022 Class A)
Output
Parameter
Conditions
Min.
Typ.
0.5
0.5
0.2
0.3
50
Max.
1.0
2.0
1.0
1.0
75
Units
%
Output Voltage Accuracy
Output Voltage Balance
Line Regulation
Dual Output, Balanced Load
For Vin = Min to Max
Iout = 10% 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
mV P - P
mV P - P
mV rms
%
100
15
120
150
2
500
6
µS
25% Load Step Change
%
0.01
0.02
%/ºC
RoHS Compliant
Continuous (Autorecovery)
Parameter
Conditions
Min.
60 Seconds 1,500
1,000 VDC 1,000
100 kHz, 1V
Typ.
Max.
Units
VDC
MΩ
pF
Isolation Voltage
Isolation Resistance
Isolation Capacitance
Switching Frequency
Environmental
350
300
500
kHz
Parameter
Conditions
Min.
Typ.
Max.
+71
Units
ºC
ºC
Operating Temperature Range
Operating Temperature Range
Storage Temperature Range
Cooling
Ambient
Case
-40
-40
-40
+25
+90
+125
ºC
MicroPower Direct
292 Page Street
Suite D
Free Air Convection
RH, Non-condensing
Humidity
95
%
Stoughton, MA 02072
USA
Physical
Case Size
1.27 x 0.58 x 0.40 Inches (32.3 x 14.8 x 10.2 mm)
Non-Conductive Black Plastic (UL94-V0)
0.31 Oz (8.8g)
Case Material
T: (781) 344-8226
F: (781) 344-8481
Weight
E: sales@micropowerdirect.com Reliability Specifications
W: www.micropowerdirect.com
Parameter
Conditions
Min.
Typ.
Typ.
Max.
Units
MTBF
1.0
MHours
MIL HDBK 217F, 25ºC, Gnd Benign
Absolute Maximum Ratings
Parameter
Conditions
24 VDC Input
Min.
-0.7
-0.7
Max.
50.0
Units
Input Voltage Surge (1 Sec)
VDC
48 VDC Input
100.0
260
Lead Temperature
1.5 mm From Case For 10 Sec.
All Models
ºC
Internal Power Dissipation
2,500
mW
Caution: Exceeding Absolute Maximum Ratings may damage the module. These are not continuous operating ratings.
Model Selection Guide
Input
Full-Load
Output
Current
(mA, Max) (mA, Min)
Fuse Rating
Slow-Blow
(mA)
1,000
1,000
1,000
1,000
1,000
1,000
1,000
500
Reflected
Ripple Cur.
(mA)
Model
Efficiency
(%, Typ)
Voltage (VDC)
Number
Current (mA)
Voltage
(VDC)
3.3
Current
Nominal
24
Range
No-Load
20
LF301RU
LF302RU
LF303RU
LF304RU
LF305RU
LF306RU
LF307RU
LF311RU
LF312RU
LF313RU
LF314RU
LF315RU
LF316RU
LF317RU
9.0 - 36.0
9.0 - 36.0
9.0 - 36.0
9.0 - 36.0
9.0 - 36.0
9.0 - 36.0
9.0 - 36.0
18.0 - 75.0
18.0 - 75.0
18.0 - 75.0
18.0 - 75.0
18.0 - 75.0
18.0 - 75.0
18.0 - 75.0
138
158
154
154
160
154
154
68
78
75
75
78
750
600
250
200
300
125
100
750
600
250
200
300
125
100
75.0
60.0
25.0
27.0
30.0
12.5
10.0
75.0
60.0
25.0
27.0
30.0
12.5
10.0
10
10
10
10
10
10
10
5
5
5
5
5
75
79
81
81
78
81
81
76
80
83
83
80
83
83
24
24
24
24
24
24
48
48
48
48
48
48
20
20
20
20
20
20
10
10
10
10
10
10
5.0
12.0
15.0
5.0
12.0
15.0
3.3
5.0
500
500
500
500
500
500
12.0
15.0
5.0
12.0
15.0
75
75
5
5
48
10
Notes:
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. No-load operation will not damage these units, however, they may not meet specifica-
tions.
4. Dual output units may provide a 10V, 24V or 30V 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 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 24V input units a 4.7 µF is recommended, and for 48V units a 2.2 µF.
6. Maximum capacitive load for single output units is 3,000 µF, for dual output models it is
180 µF for each output.
7. 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.
Mechanical Dimensions
Remote ON/OFF
Parameter
Condition
2.5 to 5.5 or Open Circuit
-0.7 to 0.8
10
Referenced to Negative Input (-Vin)
Units
VDC
VDC
mA
Supply On
Supply Off
Standby Input Current
Control Common
Remote ON/OFF Notes:
1. Maximum sink current at the on/off pin (pin 1) during a logic
low is 300 µA.
2. Maximum allowable leakage current of a switch connected to the
on/off terminal (Pin 1) at logic high (2.5V to 100V) is 200 µA.
Board Layout
Pin Connections
Pin
1
Single
-Vin
Dual
-Vin
-Vin
2
-Vin
3
On/Off On/Off
10
11
12
13
14
15
22
23
24
NC
NC
NC
Common
NC
-Vout
+Vout
NC
+Vout
NC
-Vout Common
NC
+Vin
NC
+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