Light-emitting element drive device, light emission control device, and light emission device

Abstract

A light-emitting element drive device includes, for example, a current sense amplifier configured to generate a current detection signal corresponding to a difference between a sense voltage corresponding to an inductor current (and thus an output current) supplied to a light-emitting element and a predetermined current setting signal (e.g., an offset voltage corresponding to a set current), an error amplifier configured to generate an error signal such that a direct-current component of the current detection signal has a zero value, a comparator configured to generate a set signal by comparing the current detection signal with the error signal, and a driver configured to perform feedback control of the output current in accordance with the set signal.

Dependencies are inferred from the claim text.