TJA1043 INH pull up resistor and at sleep mode the INH resistor

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TJA1043 INH pull up resistor and at sleep mode the INH resistor

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qiaoqin_wang
Contributor III

Dear Mr and Mrs

could you help me to answer the below question:

1. the TJA1043 pull up resistor about the INH  pin?

qiaoqin_wang_0-1713860293794.png

2. when the TJA1043 at sleep mode, the INH pin output voltage is 0V,the INH resistor value?

 

 

looking forward your reply ,thanks for your help.

 

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PetrS
NXP TechSupport
NXP TechSupport

Hi,

1) The pin INH provides a battery related open drain output. In all modes except of Sleep, the pin INH is actively pulled to battery voltage. The load resistance at the pin INH shall not be lower than 10
kΩ for 12 V battery systems. For applications it is recommended not to drive more than about 1mA out of the INH pin. Ron of internal mosfet can be calculated from DS's voltage drop parameter.

PetrS_0-1713954236120.png

2) During Sleep Mode INH is floating.

BR, Petr

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