NCP380HMU20AATBG ON Semiconductor, NCP380HMU20AATBG Datasheet - Page 17

• Manufacturer Part Number: NCP380HMU20AATBG
• Description: Power Switch ICs - Power Distribution OVER CURRENT PROTECTION
• Manufacturer: ON Semiconductor

Specifications of NCP380HMU20AATBG

• Product Category: Power Switch ICs - Power Distribution
• Rohs: yes
• On Resistance (max): 75 mOhms
• On Time (max): 4 ms
• Off Time (max): 3 ms
• Operating Supply Voltage: 2.5 V to 5.5 V
• Supply Current (max): 90 uA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: UDFN-6
• Current Limit: 2 A
• Maximum Power Dissipation: 830 mW
• Minimum Operating Temperature: - 40 C

current to provide to the accessory without over current
activation.
Table 5. RESISTOR SELECTION FOR ADJUSTABLE CURRENT LIMIT VERSION
Rlim + −5.2959
The “Min current limit Value” column, represents the DC
Min Current
Limit Value
(A)
0.5
0.6
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
Theoric Resistor Value
ILIM
48
46
44
42
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
5
8
6
4
2
0
) 45.256
(kW)
44.2
37.5
32.2
27.7
24.0
21.0
18.5
16.6
14.6
13.0
11.4
10.4
0
9.2
8.3
7.4
6.5
5.6
0.2
0.4
ILIM
Figure 25. R
0.6
4
Selected Resistor Value
Rlim Versus OCP Average
* 155.25
0.8
1.0
http://onsemi.com
1% or 0.1%
LIM
Current Limit (A)
(kW)
44.2
37.4
31.6
27.4
23.7
18.2
16.5
14.3
11.3
10.2
9.09
8.25
7.32
6.49
5.49
1.2
21
13
Curve vs. Current Limit
ILIM
17
1.4
3
with following formula to achieve typical current target:
) 274.39
1.6
Second column is the theoretical resistor value obtained
1.8
R
LIM
Typical OCP Target Value
2.0
vs. OCP Average
ILIM
2.2
2
0.825
0.59
0.71
0.94
1.06
1.18
1.41
1.53
1.65
1.78
1.88
2.01
2.12
2.23
2.36
2.48
(A)
1.3
* 267.6
2.4
2.6
2.8
ILIM ) 134.21
Current Value
Maximum
2.438
0.67
0.81
0.95
1.08
1.22
1.35
1.49
1.62
1.76
2.05
2.17
2.31
2.56
2.85
(A)
1.9
2.7
(eq. 5)