A3904EEWTR-P

A3904 Low Voltage Voice Coil Motor Driver Discontinued Product This device is no longer in production. The device should not be purchased for new design applications. Samples are no longer available. Date of status change: March 4, 2013 Recommended Substitutions: For existing customer transition, and for new customers or new applications, contact Allegro Sales. NOTE: For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative. Allegro MicroSystems, Inc. reserves the right to make, from time to time, revisions to the anticipated product life cycle plan for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use. A3904 Low Voltage Voice Coil Motor Driver Features and Benefits Description ▪ Fixed I2C logic thresholds ▪ 8-bit D-to-A converter ▪ 500 μA resolution ▪ Low voltage I2C serial interface ▪ Low current-draw sleep mode ▪ 2.4 to 5.5 V operation ▪ 1.1 mm × 0.7 mm, 0.5 mm maximum overall height WLCSP The A3904 is a voice coil motor (VCM) driver, with an I2C-compatible serial interface. Designed for camera autofocus and zoom applications, this high accuracy digital IC is provided in a WLCSP package ideal for portable devices. Its operating voltage range is 2.4 to 5.5 V, and its maximum output current is 127 mA. Output current is programmed via the I2C interface, in 500 uA increments, with clock rates up to 400 kHz. I2C inputs set the internal D-to-A converter output voltage that is the reference for linear current control via a MOSFET output sink transistor. To conserve battery power, a logic low signal on the SLEEPZ input disables the output MOSFET and reduces the supply current to