A3907

A3907 Low Voltage Voice Coil Motor Driver Features and Benefits ▪ WLCSP package for minimum footprint ▪ Ramp control circuit ▪ Fixed I2C logic thresholds ▪ 10-bit D-to-A converter ▪ 100 μA resolution ▪ Low voltage I2C serial interface ▪ Low current draw sleep mode-active low ▪ 2.3 to 5.5 V operation Applications: ▪ Camera focus motor Description Designed for linear control of small form factor voice coil motors, theA3907 is capable of peak output currents to 102 mA and operating voltages to 5.5 V. Internal circuit protection includes thermal shutdown with hysteresis, flyback clamp diode, and undervoltage monitoring of VDD. Package: 6-Bump Chip Scale Package (suffix CG) Functional Block Diagram 1.8 V 1.8 kΩ 1.8 kΩ VDD SDA SCL SLEEPZ Bandgap Ref I2C Serial Interface 10 Bit DAC Control Logic Timer 2.3 to 5.5V IOUT 1.2 Ω GND A3907-DS, Rev. 1 A3907 Low Voltage Voice Coil Motor Driver Selection Guide Part Number A3907ECGTR Packing 4000 pieces per reel Package Bumped wafer-level chip-scale package (WLCSP) Pb-free Pb-free chip with high-temperature solder balls (RoHS compliant) Absolute Maximum Ratings Characteristic Supply Voltage Logic Input Voltage Range Operating Ambient Temperature Junction Temperature Storage Temperature Symbol VDD VIN TA TJ(max) Tstg Range E Notes Rating 6 –0.3 to VDD + 0.3 –40 to 85 150 –40 to 150 Unit V V ºC ºC ºC Thermal Characteristics Characteristic Symbol Test Conditions* Package Thermal Resistance RθJA On 4-layer PCB based o...