參數(shù)資料
型號: LM3812MX-7.0/NOPB
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 電源管理
英文描述: 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝: 0.150 INCH, PLASTIC, SOP-8
文件頁數(shù): 5/14頁
文件大?。?/td> 705K
代理商: LM3812MX-7.0/NOPB
TABLE 2. Duty Cycle to Current Conversion Table
Duty Cycle
(%)
Sense Current
(Amps)
Duty Cycle
(%)
Sense Current
(Amps)
95.5
0.990
50.0
-0.000
92.5
0.935
47.5
-0.055
90.0
0.880
45.0
-0.110
87.5
0.825
42.5
-0.165
85.0
0.770
40.0
-0.220
82.5
0.715
37.5
-0.275
80.0
0.660
35.0
-0.330
77.5
0.605
32.5
-0.385
75.0
0.550
30.0
-0.440
72.5
0.495
27.5
-0.495
70.0
0.440
25.0
-0.550
67.5
0.385
22.5
-0.605
65.0
0.330
20.0
-0.660
62.5
0.275
17.5
-0.715
60.0
0.220
15.0
-0.770
57.5
0.165
12.5
-0.825
55.0
0.110
10.0
-0.880
52.5
0.055
7.5
-0.935
50.0
0.000
5.0
-0.990
*Maximum Sense Current = 1.0 Amps for LM3812-1.0 and LM3813-1.0.
The sense current should be multiplied by 10 for LM3812-7.0 and LM3813-7.0.
Timing Diagram
10012211
Duty cycle of the PWM waveform during any sampling interval indicates the current magnitude (average) and direction during the previous sampling interval.
FIGURE 9. Typical Timing Diagram for Mostly Positive Current
LM3812/LM3813
www.national.com
13
相關PDF資料
PDF描述
LM3812M-7.0/NOPB 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
LM3813M-1.0/NOPB 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
LM3814MX-1.0/NOPB 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
LM3815MX-1.0/NOPB 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
LM3814M-1.0/NOPB 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
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