48-channel constant-current driver for signage and lighting
The LP5890RRFR: Target applications include lighting and signage, where the 48 outputs drive individual LED strings without internal switches — the current regulation is handled externally.
Output count and current per channel
The operating frequency range of 40 MHz to 160 MHz suggests the part uses a high-speed serial interface to shift in the channel data; the actual update rate depends on the number of cascaded devices and the clock speed chosen.
Package and board integration
Housed in a 76-VFQFN exposed-pad package (9x9 mm body), the LP5890RRFR requires a surface-mount reflow profile compatible with lead-free solder — the thermal pad on the underside must be connected to a copper pour for heat spreading.