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BQ34Z100PWR Questions

My battery is 25.2V. Do I divide that down to 0.9V going to the BAT pin?

In the example circuits there is a switch that connects REG25 to VEN though a 1K resistor. How does this switch connection enable the LED display? Aren't REG25 and VEN both outputs?

When does the SN74HC164PW shift registers get updated?

  • The VEN pin is an input and output pin. It is an output when voltage measurements occur. Otherwise, it is checking for a current going into the pin to trigger lighting the LEDs.

    The LEDs are updated periodically, but I will have to check the rate.