參數(shù)資料
型號(hào): LM2540-9ERV3HF
廠商: POWER-ONE INC
元件分類: 電源模塊
英文描述: 2-OUTPUT 50 W AC-DC REG PWR SUPPLY MODULE
封裝: METAL, CASE M02, MODULE
文件頁(yè)數(shù): 2/24頁(yè)
文件大小: 982K
代理商: LM2540-9ERV3HF
Cassette Style
AC-DC Converters
M Series
Edition 5/5.2000
10/24
Table 9a: R1 for Uo
< U
o nom (conditions: Ui nom, Io nom, rounded up to resistor values E 96, R2 =
∞)
Uo nom = 5.1 V
Uo nom = 12 V
Uo nom = 15 V
Uo nom = 24 V
Uo nom = 48 V
Uo [V]
R1 [k]
Uo [V]
R1 [k]
Uo [V]
R1 [k]
Uo [V]
R1 [k]
Uo [V]
R1 [k]
0.5
0.432
2.0
0.806
2.0
0.619
4.0
0.806
8.0
0.806
1.0
0.976
3.0
1.33
4.0
1.47
6.0
1.33
12.0
1.33
1.5
1.65
4.0
2.0
6.0
2.67
8.0
2.0
16.0
2.0
2.61
5.0
2.87
8.0
4.53
10.0
2.87
20.0
2.87
2.5
3.83
6.0
4.02
9.0
6.04
12.0
4.02
24.0
4.02
3.0
5.76
7.0
5.62
10.0
8.06
14.0
5.62
28.0
5.62
3.5
8.66
8.0
8.06
11.0
16.0
8.06
32.0
8.06
4.0
14.7
9.0
12.1
12.0
16.2
18.0
12.1
36.0
12.1
4.5
30.1
10.0
20.0
13.0
26.1
20.0
40.0
20.0
5.0
200.0
11.0
44.2
14.0
56.2
22.0
44.2
44.0
44.2
Table 9b: R2 for Uo
> U
o nom (conditions: Ui nom, Io nom, rounded up to resistor values E 96, R1 =
∞)
Uo nom = 5.1 V
Uo nom = 12 V
Uo nom = 15 V
Uo nom = 24 V
Uo nom = 48 V
Uo [V]
R2 [k]
Uo [V]
R2 [k]
Uo [V]
R2 [k]
Uo [V]
R2 [k]
Uo [V]
R2 [k]
5.15
464
12.1
1780
15.2
1470
24.25
3160
48.5
6810
5.20
215
12.2
909
15.4
750
24.50
1620
49.0
3480
5.25
147
12.3
619
15.6
511
24.75
1100
49.5
2370
5.30
110
12.4
464
15.8
383
25.00
825
50.0
1780
5.35
90.9
12.5
383
16.0
332
25.25
715
50.5
1470
5.40
78.7
12.6
316
16.2
274
25.50
590
51.0
1270
5.45
68.1
12.7
274
16.4
237
25.75
511
51.5
1100
5.50
61.9
12.8
249
16.5
226
26.00
453
52.0
953
13.0
200
26.25
402
52.5
845
13.2
169
26.40
383
52.8
806
Display Status of LEDs
Uo1 > 0.95...0.98Uo1 adj
Ui max Ui ov
Ui min
Ui uv
Ui
Ui abs
OK
i
Uo1 > 0.95...0.98Uo1 adj
Io nom
IoL
Io
OK
Io L
Uo1 < 0.95...0.98Uo1 adj
TC
i
TC max
TPTC threshold
Ui inh
i
+50 V
+0.8 V
+2.4 V
-50 V
Uinh threshold
Io L
LED off
LED on
LED Status undefined
06002
Fig. 13
LEDs "OK" and "i" status versus input voltage
Conditions: Io
≤ I
o nom, TC
≤ T
C max, Uinh
≤ 0.8 V
Ui uv = undervoltage lock-out, Ui ov = overvoltage lock-out
LED "OK" and "Io L"status versus output current
Conditions: Ui min...Ui max, TC
≤ T
C max, Uinh
≤ 0.8 V
LED "i"versus case temperature
Conditions: Ui min...Ui max, Io
≤ I
o nom, Uinh
≤ 0.8 V
LED "i"versus Uinh
Conditions: Ui min...Ui max, Io
≤ I
o nom, TC
≤ T
C max
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