AK2557

MP

4 ch Cathode Common LDD with Digital APC

4 ch 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).

Key Features

  • Auto Power Control circuit. | It is equipped with a feedback type APC (Auto Power Control) circuit that keeps the LD light intensity constant.
  • Shading correction function

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
Replacement P/N

                                

Block Diagram

Block Diagram