Silicon Laboratories si85xx 4.3. R1, R2, R3, R4 Inputs, OUT1, OUT2 Outputs J4, IIN J5, IOUT J6

Models: si85xx

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4.3. R1, R2, R3, R4 Inputs, OUT1, OUT2 Outputs (J4)

Si85xx-TB UG

4.3. R1, R2, R3, R4 Inputs, OUT1, OUT2 Outputs (J4)

Connector J4 is used to provide the control inputs (R1, R2, R3, R4, MODE) to the Si85xx. It also provides the output voltage of the sensed input current on OUT1 and OUT2.

Table 3. J4 Pin Descriptions

Jumper #

Description

 

 

J4

R1, R2, R3, R4, OUT1, OUT2, GND

 

 

4.4. IIN (J5)

Connector J5 is used to provide the positive current sense input to the Si85xx device.

Table 4. J5 Pin Descriptions

Jumper #

Description

 

 

J5

IIN

 

 

4.5. IOUT (J6)

Connector J6 is used to provide the negative/return current sense input to the Si85xx device.

Table 5. J6 Pin Descriptions

Jumper #

Description

 

 

J6

IOUT

 

 

4.6. TRST RESET (J7)

Connector J7 is used to set the timing for the Si85xx's integrator. J7 defaults to Reset option 1 where TRST is tied VDD providing approximately 200 ns of reset time. Reset option 2 is selected by connecting a timing resistor (R1 in Figure 4) from the TRST input to ground.

 

Table 6. J7 Pin Descriptions

 

 

 

Jumper #

 

Description

 

 

 

J7

 

TRST – VDD or R1 to GND

 

 

 

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Silicon Laboratories si85xx 4.3. R1, R2, R3, R4 Inputs, OUT1, OUT2 Outputs J4, IIN J5, IOUT J6, TRST RESET J7, Si85xx-TBUG