ZHCSLM8B August 2020 – February 2024 UCC21759-Q1
PRODUCTION DATA
Both FLT and RDY pin are open-drain output. The RST/EN pin has 50kΩ internal pulldown resistor, so the driver is in OFF status if the RST/EN pin is not pulled up externally. A 5kΩ resistor can be used as pullup resistor for the FLT, RDY and RST/EN pins.
To improve the noise immunity due to the parasitic coupling and common mode noise, low pass filters can be added between the FLT, RDY and RST/EN pins and the microcontroller. A filter capacitor between 100pF to 300pF can be added.