作爲與VCM（音圈馬達）匹配的driver IC（FP5510）一直被産業鏈當做一箇小器件，故而默默無聞，較少爲人所認知和談論。其實小小的driver IC（FP5510），是攝像模組實現自動對焦功能不可或缺的一部分。與VCM 馬達是馬車與車夫的關繫。目前Closeloop(閉環式)異軍突起、OIS呼之慾齣。擔當馬車夫的driver IC（FP5510）日益顯得重要，成爲業界開始關註的焦點。

  10-Bit DAC 120mA VCM Driver with I2C Interface （FP5510）

The FP5510 is a single 10-bit DAC with 120mAoutput current voice coil motor (VCM) driver, with an I2C-compatible serial interface that operates at clock rates up to 400kHz. Its supply operates from 2.3V to 3.6V.

The FP5510 incorporates with a power-on reset circuit, power-down function. Power-on reset circuit ensure when supply power up, DAC output is to 0V until valid write bit value takes place. In power down mode, the supply current is about 1μA.

The FP5510 is designed for auto focus operation includes digital camera module, optical zoom camera phones and lens auto focus. The I2C address of FP5510 is 0x18h.

The FP5510 with WLCSP package which it is suitable for reduced-space mounting in mobile phone and other portable applications 。

Features
 Power Supply Voltage Rang: 2.3V to 3.6V
 VCM Driver for Auto-Focus
 10-Bit Resolution Current Sinking of 120mA for
VCM
 2-Wire I2C Interface (1.8V Interface Compatible)
 Internal 4 Slope Control Mechanism
1. Enhance Slope Control Mode
2. One Step Mode
3. Linear Slope Mode
4. Two Step Slope Mode
 Power-Save Mode Current < 1μA
 Power On Reset (POR)
 Small Size: 0.7mm×1.1mm (6-Balls WLCSP)
Applications
 Digital Camera Module
 Cell Phone
 Lens Cover
 Web Camera