LM3824MM-1.0/NOPB National Semiconductor, LM3824MM-1.0/NOPB Datasheet - Page 10

• Manufacturer Part Number: LM3824MM-1.0/NOPB
• Description: IC CURRENT GAUGE 3% 8MSOP
• Manufacturer: National Semiconductor
• Type: Battery Chargerr

Specifications of LM3824MM-1.0/NOPB

• Function: Current Gauge
• Sensing Method: High-Side
• Accuracy: ±3%
• Voltage - Input: 2 ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
• Operating Supply Voltage (min): 2V
• Operating Supply Voltage (max): 5.25V
• Operating Temp Range: -40C to 85C
• Package Type: MSOP
• Mounting: Surface Mount
• Pin Count: 8
• Operating Temperature Classification: Industrial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Lead Free Status / Rohs Status: Compliant
• Other names: LM3824MM-1.0; LM3824MM-1.0TR

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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
Sense Current
(Imax = 1.0A)
−0.05
−0.10
−0.15
−0.20
−0.25
−0.30
−0.35
−0.40
−0.45
−0.50
−0.55
−0.60
−0.65
−0.70
−0.75
−0.80
−0.85
−0.90
−0.95
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
−1
1
TABLE 1. Current to Duty Cycle Conversion Table
Sense Current
(Imax = 2.0A)
−0.10
−0.20
−0.30
−0.40
−0.50
−0.60
−0.70
−0.80
−0.90
−1.10
−1.20
−1.30
−1.40
−1.50
−1.60
−1.70
−1.80
−1.90
1.90
1.80
1.70
1.60
1.50
1.40
1.30
1.20
1.10
0.90
0.80
0.70
0.60
0.50
0.40
0.30
0.20
0.10
0.00
−1
−2
10
2
1
quantization error of
Please see the “PWM Output and Current Accuracy” section
for more details.
1
⁄
Duty Cycle (%)
2
bit is not shown in these tables.
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
47.7
45.5
43.2
40.9
38.6
36.4
34.1
31.8
29.5
27.3
22.7
20.5
18.2
15.9
13.6
11.4
9.1
6.8
4.5
50
25