Model Selection Guide
Model
Number
LF201RW
LF202RW
LF203RW
LF204RW
LF205RW
LF206RW
LF207RW
LF211RW
LF212RW
LF213RW
LF214RW
LF215RW
LF216RW
LF217RW
LF221RW
LF222RW
LF223RW
LF224RW
LF225RW
LF226RW
LF227RW
LF231RW
LF232RW
LF233RW
LF234RW
LF235RW
LF236RW
LF237RW
Input
Output
Reflected
Efficiency
Voltage (VDC)
Current (mA)
Ripple
Voltage Current
Current
(%, Typ)
Nominal
Range
Full-Load No-Load (VDC) (mA, Max) (mA, Min) Current (mA)
5
4.5 - 9.0
471
40
3.3
500.0
125.0
100
70
5
4.5 - 9.0
548
40
5.0
400.0
100.0
100
73
5
4.5 - 9.0
534
40
12.0
167.0
42.0
100
75
5
4.5 - 9.0
582
40
15.0
134.0
33.0
100
73
5
4.5 - 9.0
667
40
±5.0
±200.0
±50.0
100
64
5
4.5 - 9.0
615
40
±12.0
±83.0
±21.0
100
69
5
4.5 - 9.0
598
40
±15.0
±67.0
±17.0
100
71
12
9.0 - 18.0
184
20
3.3
500.0
125.0
25
73
12
9.0 - 18.0
217
20
5.0
400.0
100.0
25
77
12
9.0 - 18.0
209
20
12.0
167.0
42.0
25
80
12
9.0 - 18.0
220
20
15.0
134.0
33.0
25
80
12
9.0 - 18.0
242
20
±5.0
±200.0
±50.0
25
73
12
9.0 - 18.0
224
20
±12.0
±83.0
±21.0
25
78
12
9.0 - 18.0
226
20
±15.0
±67.0
±17.0
25
78
24
18.0 - 36.0
96
10
3.3
500.0
125.0
15
72
24
18.0 - 36.0
109
10
5.0
400.0
100.0
15
77
24
18.0 - 36.0
109
10
12.0
167.0
42.0
15
80
24
18.0 - 36.0
108
10
15.0
134.0
33.0
15
81
24
18.0 - 36.0
119
10
±5.0
±200.0
±50.0
15
74
24
18.0 - 36.0
112
10
±12.0
±83.0
±21.0
15
78
24
18.0 - 36.0
110
10
±15.0
±67.0
±17.0
15
80
48
36.0 - 72.0
49
8
3.3
500.0
125.0
10
71
48
36.0 - 72.0
57
8
5.0
400.0
100.0
10
73
48
36.0 - 72.0
53
8
12.0
167.0
42.0
10
79
48
36.0 - 72.0
55
8
15.0
134.0
33.0
10
79
48
36.0 - 72.0
62
8
±5.0
±200.0
±50.0
10
71
48
36.0 - 72.0
57
8
±12.0
±83.0
±21.0
10
77
48
36.0 - 72.0
57
8
±15.0
±67.0
±17.0
10
77
Fuse Rating
Slow-Blow
(mA)
1,000
1,000
1,000
1,000
1,000
1,000
1,000
500
500
500
500
500
500
500
250
250
250
250
250
250
250
120
120
120
120
120
120
120
Notes:
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 10 VDC, 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 appli-
cations 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 8.2 µF is recommended, for 12V
input units, a 3.3 µF; 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 protection. See the table above for the correct rating.
Derating Curve
Capacitive Load
Output (VDC)
3.3
5.0
12.0
15.0
±5.0
±12.0
±15.0
µF Max
2,200
1,000
170
110
470
100
47
Mechanical Dimensions
Note:
For dual output Units, Cap
load is given for each output.
Solder Layout
Pin Connections
Pin
1
7
8
9
10
16
Single
-Vin
NC
NC
+Vout
-Vout
+Vin
Dual
-Vin
NC
Common
+Vout
-Vout
+Vin
NC = No Connection
MicroPower Direct
www.micropowerdirect.com
•
Mechanica
Mechanical Notes:
•
All dimen
dimensions are typical in inches (mm)
•
Tolerance x.xx = ±0.01 (±0.25)
292 Page Street Ste D Stoughton, MA 02072
TEL: (781) 344-8226
•
FAX: (781) 344-8481
•
E-Mail: sales@micropowerdirect.com
MPD [ MICROPOWER DIRECT, LLC ]
