作为与VCM（音圈马达）匹配的driver IC（FP5510）一直被产业链当做一个小器件，故而默默无闻，较少为人所认知和谈论。其实小小的driver IC（FP5510），是摄像模组实现自动对焦功能不可或缺的一部分。与VCM 马达是马车与车夫的关系。目前Closeloop(闭环式)异军突起、OIS呼之欲出。担当马车夫的driver IC（FP5510）日益显得重要，成为业界开始关注的焦点。

  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