參數(shù)資料
型號(hào): LM3815MX-7.0
廠商: NATIONAL SEMICONDUCTOR CORP
元件分類: 電源管理
英文描述: Fast Current Gauge IC with Ultra Low Loss Sense Element and PWM Output
中文描述: 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO8
封裝: 0.150 INCH, PLASTIC, SOP-8
文件頁數(shù): 12/14頁
文件大?。?/td> 264K
代理商: LM3815MX-7.0
Look-Up Tables
The following tables show how to convert the duty cycle of
the PWM output to a current value, and vice versa. The
quantization error of
1
2
bit is not shown in these tables.
Please see the ’PWM Output and Current Accuracy’ section
for more details.
TABLE 1. Current to Duty Cycle Conversion Table
Sense Current
(Amps)
*
1.00
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0.60
0.55
0.50
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
0.00
Duty Cycle
(%)
95.5
93.2
90.9
88.6
86.4
84.1
81.8
79.5
77.3
75.0
72.7
70.5
68.2
65.9
63.6
61.4
59.1
56.8
54.5
52.3
50.0
Sense Current
(Amps)
*
-1.00
-0.95
-0.90
-0.85
-0.80
-0.75
-0.70
-0.65
-0.60
-0.55
-0.50
-0.45
-0.40
-0.35
-0.30
-0.25
-0.20
-0.15
-0.10
-0.05
-0.00
Duty Cycle
(%)
4.5
6.8
9.1
11.4
13.6
15.9
18.2
20.5
22.7
25.0
27.3
29.5
31.8
34.1
36.4
38.6
40.9
43.2
45.5
47.7
50.0
*
Maximum Sense Current = 1.0 Amps for LM3814-1.0 and LM3815-1.0
The sense current should be multiplied by 10 for LM3814-7.0 and LM3815-7.0.
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