| 摘要 |
<p>Disclosed are an LED constant current driver chip and an output current control method therefor. The LED constant current driver chip comprises an output enable (OE) pin, a data latch (LE) pin, a clock (CLK) pin, a data input (DI) pin, a data output (DO) pin, and an N-number of drive output (OUT1-OUTN) pins, where control data of the N-number of drive output (OUT1-OUTN) pins is inputted via the data input (DI) pin, then outputted from the data output (DO) pin via a serial shift module, and is characterized in that: any two or more of the three pins, namely the output enable (OE) pin, the data latch (LE) pin, and the clock (CLK) pin, serve as current control signal input pins for use in inputting a current control signal to control an output current of the N-number of drive output (OUT1-OUTN) pins via a control register module and an current regulator module.</p> |
