AK2557

MP

4ch Cathode Common LDD with Digital APC

4ch Cathode Common LDD with Digital APC

MP

Description

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 current of LD and a feed-back digital APC (Auto Power Control) circuit that maintains the optical LD power constant. The AK2557 can improve the printing quality and reduces external parts and the cost with useful functions such as the internal APC adjustment, BIAS_APC (Auto “Ibias” Setting), LD Power Attenuation and Shading Correction with digital interface achieving with the internal arithmetic circuits. Multiple AK2557s can be connected to the multi-beams LD (8 beams).

Applications

  •                                 MFP, LBP
                                

Specifications

Part Number AK2557
LD Common Cathode
Number of Channels 4
Power Supply Voltage (MIN.) [V] 4.75
Power Supply Voltage (TYP.) [V] 5.0
Power Supply Voltage (MAX.) [V] 5.25
Input Frequency [MHz] 200
Minimum Pulse [nsec] 2.5
Ibias [mA] 45
Isw [mA] 90
Iop [mA]
Other
Operating Temperature [℃]
Device Package HVQFN
Number of Pins 48

Product Information

Part Status MP
Pb Free Yes
Halogen Free No
MSL MSL2
Packaging TAPE
JEDEC Standard Packaging Compliant
Minimum Order Quantity [pcs.] 1000
Recommended Order Quantity 1 [pcs.] 9000
Recommended Order Quantity 2 [pcs.] 2000
Standard Packing Quantity [pcs.] 1000
Replacement P/N

Block Diagram

Block Diagram