PT4115

PT4115

• PT4115, current setup is

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

• Icurrent = 0.1/Rcs

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