□ 4ch Cathode Common LDD Switching LD Current at 200MHz [Max] □ 9-bit Current-DAC for “Ibias”: Maximum Output Current = 45mA [Typ.] □ 9-bit Current-DAC for “Isw” with AGC.

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The AK2557 is a 4-channel cathode common LDD (Laser Diode Driver) suitable for MFPs (Multi Function Printer) and LBPs (Laser Beam Printer). The AK2557 equips a 200MHz [Max.] LDD that switches the LD current, current-DACs that set the operation curren.

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