PT4115
parrel resistors of two 0.4 R Rp1 = 1/(1/0.4R+1/0.4R) = 0.2R
parral resistors cominbine of Rp1 and 0.5R Rp2 = 1/ (1/Rp1 + 1/0.5R) = 1 / (5+2) = 0.143R
Icur = 0.1 / 0.143R = 700MA
- More setup - parallet to Pin CSN for R1+R2+3
| R1 |
R2 |
R3 |
R |
current
|
| 0.4 |
0.4 |
0.5 |
0.143R |
700mA
|
| X |
0.4 |
0.5 |
0.222R |
450mA
|
| 0.4 |
0.4 |
X |
0.2R |
500mA
|
| 0.33 |
0.5 |
0.5 |
0.1363636364 |
733 mA (default setup)
|
Resistor setup for our board
| R1 ohm |
R2 ohm |
R3 ohm |
Total resistor ohm |
current supply
|
| 0.33 |
0.33 or 0.5 |
0.5 |
0.124 ohm |
800 / 700 mA (default)
|
| 0.33 |
NC remove |
0.5 |
0.199 ohm |
500mA
|
| 0.33 |
NC remove |
NC remove |
0.303 ohm |
300mA
|
| NC remove |
NC remove |
0.5 |
0.5 ohm |
200mA
|
| R1 ohm |
R2 ohm |
R3 ohm |
Total resistor ohm |
current supply
|
| 0.2 |
0.5 |
1 |
0.125 |
800mA (default)
|
| 0.2 |
0.5 |
- |
0.143 ohm |
700mA
|
| 0.2 |
- |
1 |
0.167 ohm |
600mA
|
| 0.2 |
- |
- |
0.2 ohm |
500mA
|
| - |
0.5 |
1 |
0.333 ohm |
300mA
|