Datasheet Summary
TECHNICAL NOTE
System Power Supply LSIs for use in automotive electronics
System Power Supply IC with Connunication Function (Master Type)
Description The BD9400BFP can be bined with the BD9401FM/BD9403FV to create application-specific system power supplies. It can be controlled using an I2C BUS. The BD9400BFP is a main control chip featuring an I2C BUS bidirectional munications function, a VDD LDO (for microcontroller use), a VDD reset, and BD9401FM/BD9403FV control circuits. The IC's I2C BUS munications function allows switching regulator and high-side switch on/off control, as well as switching regulator frequency adjustment, using a maximum of 3 channels. The I2C BUS...