LM3814M-7.0/HALF National Semiconductor, LM3814M-7.0/HALF Datasheet - Page 13
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LM3814M-7.0/HALF
Manufacturer Part Number
LM3814M-7.0/HALF
Description
Manufacturer
National Semiconductor
Type
Gas Gauger
Datasheet
1.LM3814M-7.0HALF.pdf
(14 pages)
Specifications of LM3814M-7.0/HALF
Operating Supply Voltage (min)
2V
Operating Supply Voltage (max)
5.25V
Operating Temp Range
-40C to 125C
Package Type
SOIC N
Mounting
Surface Mount
Pin Count
8
Operating Temperature Classification
Automotive
Lead Free Status / Rohs Status
Compliant
Timing Diagram
Duty cycle of the PWM waveform during any sampling interval indicates the current magnitude (average) and direction during the previous sampling interval.
*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.
Duty Cycle
95.5
92.5
90.0
87.5
85.0
82.5
80.0
77.5
75.0
72.5
70.0
67.5
65.0
62.5
60.0
57.5
55.0
52.5
50.0
(%)
FIGURE 9. Typical Timing Diagram for Mostly Positive Current
TABLE 2. DUTY CYCLE TO CURRENT CONVERSION TABLE
Sense Current
(Amps)
0.990
0.935
0.880
0.825
0.770
0.715
0.660
0.605
0.550
0.495
0.440
0.385
0.330
0.275
0.220
0.165
0.110
0.055
0.000
13
Duty Cycle
50.0
47.5
45.0
42.5
40.0
37.5
35.0
32.5
30.0
27.5
25.0
22.5
20.0
17.5
15.0
12.5
10.0
(%)
7.5
5.0
Sense Current
(Amps)
-0.000
-0.055
-0.165
-0.220
-0.275
-0.330
-0.385
-0.440
-0.495
-0.550
-0.605
-0.660
-0.715
-0.770
-0.825
-0.880
-0.935
-0.990
-0.110
10101311
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