ZHCSL10C March 2020 – June 2021 LM61440-Q1
PRODUCTION DATA
The LM61440-Q1 can have two behaviors while lightly loaded. One behavior, called auto mode operation, allows for seamless transition between normal current mode operation while heavily loaded and highly efficient light load operation. The other behavior, called FPWM Mode, maintains full frequency even when unloaded. Which mode the LM61440-Q1 operates in depends on which factory option is employed. See Section 6 for options. Note that all parts operate in FPWM mode when synchronizing frequency to an external signal.
In auto mode, light load operation is employed in the LM61440-Q1. Light load operation employs two techniques to improve efficiency:
Note that while these two features operate together to create excellent light load behavior, they operate independently of each other.