A key feature is the REXT pin, which allows designers to set the output current across all channels using a single external resistor.
A typical "top-level" schematic for the LAD402P focuses on its primary interface pins and the flow of power from input to output. Component Block Pin/Connection Description Supplies bias power, typically 4.5V to 5.5V for logic. Current Setting lad402p schematic top
Must be connected to the ground plane to manage heat dissipation. A key feature is the REXT pin, which
Connects to a precision resistor to ground to define the sink current. OUT0–OUT7 lad402p schematic top
It acts as a multi-channel sink driver, often featuring shift registers and data latches to manage individual LED channels.
Constant-current sink outputs that connect to the cathode of the LED string. DAI / DCK / LAT