| 摘要 |
A dimming circuit (A11) incorporated into a light-emitting-load driving device has a pre-comparator (CMP21) for generating a compare signal (S20y) by comparing a dimming signal (S20) with a threshold voltage (VthCMP) that is lower than an input buffer (A113x) of a dimming microcomputer (A113), and for transmitting the compare signal (S20y) instead of the dimming signal (S20) to the dimming microcomputer (A113). |
