Nec B58944: Datasheet 2021

data retention (minimum 2.0V) and battery backup capabilities. www.dcddcc.com Pinout Overview (SOP-28)

Forward voltage (Vf): The datasheet gives typical and maximum forward voltages at specified test currents (often 20 mA for discrete LEDs, but SMD backlight LEDs commonly characterized at lower currents like 10 mA). Vf varies by color and temperature; expect typical Vf in the 2.0–3.4 V range depending on LED color (reds lower, blues/whites higher). The datasheet provides Vf vs. If curves for design margining. nec b58944 datasheet 2021