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A3907 fiches techniques PDF

Allegro - Low Voltage Voice Coil Motor Driver

Numéro de référence A3907
Description Low Voltage Voice Coil Motor Driver
Fabricant Allegro 
Logo Allegro 





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A3907 fiche technique
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

PagesPages 11
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