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 1 956 a. the fp5510 is designed for auto focus operation  includes digital camera module optical zoom  camera phones and lens auto focus. the i2c  address offp5510 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 of120ma for vcm 2-wire i2c interface 1.8v interface compatible internal 4 slope control mechanism