LM3813MX-7.0 National Semiconductor, LM3813MX-7.0 Datasheet - Page 13
![IC CURRENT GAUGE PREC EVAL 8SOIC](/photos/18/29/182926/8-soic_sml.jpg)
LM3813MX-7.0
Manufacturer Part Number
LM3813MX-7.0
Description
IC CURRENT GAUGE PREC EVAL 8SOIC
Manufacturer
National Semiconductor
Type
Battery Chargerr
Datasheet
1.LM3813MX-7.0.pdf
(14 pages)
Specifications of LM3813MX-7.0
Function
Current Gauge
Sensing Method
Low-Side
Accuracy
±4%
Voltage - Input
2 ~ 5.25 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Output Current
1mA
Operating Supply Voltage (min)
2V
Operating Supply Voltage (max)
2.25V
Operating Temp Range
-40C to 125C
Package Type
SOIC N
Mounting
Surface Mount
Pin Count
8
Operating Temperature Classification
Automotive
For Use With
LM3813EVAL - EVALUATION BOARD FOR LM3813
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Output
-
Lead Free Status / Rohs Status
Not Compliant
Other names
*LM3813MX-7.0
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM3813MX-7.0
Manufacturer:
YAMAHA
Quantity:
101
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 LM3812-1.0 and LM3813-1.0.
The sense current should be multiplied by 10 for LM3812-7.0 and LM3813-7.0.
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
10012211
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