A3907 Low Voltage Voice Coil Motor Driver
Features and Benefits
▪ WLCSP package for minimum footprint ▪ Ramp control ci...
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 under
voltage 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...