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A3907

Part Number	A3907
Manufacturer	Allegro
Description	Low Voltage Voice Coil Motor Driver
Published	Sep 19, 2016
Detailed Description	A3907 Low Voltage Voice Coil Motor Driver Features and Benefits ▪ WLCSP package for minimum footprint ▪ Ramp control ci...
Datasheet	A3907 PDF File

Overview

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 on JEDEC standard *Additional thermal information available on the Allegro website Value Unit 64 ºC/W Allegro MicroSystems, LLC 115 Northeast Cutoff Worcester, Massachusetts 01615-0036 U.
S.
A.
1.
508.
853.
5000; www.
allegromicro.
com 2 A3907 Low Voltage Voice Coil Motor Driver ELECTRICAL CHARACTERISTICS Valid at TA = 25°C, VDD = 2.
3 to 5.
5 V; unless otherwise noted Characteristics Symbol Test Conditions Min.
Supply Current UVLO Enable Threshold UVLO Hysteresis Thermal Shutdown Temperature ...

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