A3907ECGTR

A3907 Low Voltage Voice Coil Motor Driver Features and Benefits Description ▪ 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 Designed for linear control of small form factor voice coil motors, the A3907 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. Applications: ▪ Camera focus motor Package: 6-Bump Chip Scale Package (suffix CG) Functional Block Diagram 2.3 to 5.5V 1.8 V VDD IOUT Bandgap Ref 1.8 kΩ 1.8 kΩ 10 Bit DAC SDA SCL I2C Serial Interface Control Logic SLEEPZ Timer A3907-DS 1.2 Ω GND A3907 Low Voltage Voice Coil Motor Driver ABSOLUTE MAXIMUM RATINGS Conditions Supply Voltage VDD Logic Input Voltage Range Vin Junction Temperature Storage Temperature Range Operating Temperature Range Package Thermal Resistance A3907ECG Pin Name IOUT SLEEPZ GND SDA VDD SCL Bump Side View Top Side View Pin Description Sink Drive Output Standby Mode Control Ground I2C data Power Supply In I2C clock Tj Ts Rja A1 A2 B1 B2 C1 C2 4 layer PCB Min. Typ Max. Units 6 V -.3 Vdd+.3 V -40 -40 150 150 85 °C °C °C 64 °C/W A3907 Low Voltage Voice Coil Motor Driver ELECTRICAL CHARACTERISTICS at TA = 25°C, VDD = 2.3V to 5.5V (unless noted otherwise) Limits Characteristics Supply Current UVLO Enable Threshold UVLO Hysteresis Thermal Shutdown Temp. Thermal Shutdown Hysteresis Sym IDD UVLOth Test Conditions Sleep Mode (SLEEPZ=Low) 2.3 to 3.5V ∆TJ Typ. Max. Units – .5 2 mA –