DRV201_15 Datasheet, PDF (1/29 Pages) Texas Instruments – DRV201 Voice Coil Motor Driver for Camera Auto Focus

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DRV201
SLVSB25C – AUGUST 2011 – REVISED JUNE 2015
DRV201 Voice Coil Motor Driver for Camera Auto Focus
1 Features
•1 Configurable for Linear or PWM Mode VCM
Current Generation
• High Efficiency PWM Current Control for VCM
• Advanced Ringing Compensation
• Integrated 10-bit D/A Converter for VCM Current
Control
• Protection
– Open and Short-Circuit Detection on VCM Pins
– Undervoltage Lockout (UVLO)
– Thermal Shutdown
– Open and Short-Circuit Protection on VCM
Output
– Internal Current Limit for VCM Driver
– 4-kV ESD-HBM
• I²C Interface
• Operating Temperature Range: –40ºC to 85ºC
• 6-Ball WCSP Package With 0.4-mm Pitch
• Max Die Size: 0.8 mm × 1.48 mm
• Package Heights:
– YFM: 0.15 mm
– YMB: 0.3 mm
2 Applications
• Cell Phone Auto Focus
• Digital Still Camera Auto Focus
• Iris and Exposure Controls
• Security Cameras
• Web and PC Cameras
• Actuator Controls
3 Description
The DRV201 device is an advanced voice coil motor
driver for camera auto focus. It has an integrated D/A
converter for setting the VCM current. VCM current is
controlled with a fixed frequency PWM controller or a
linear mode driver. Current generation can be
selected via I²C register. The DRV201 device has an
integrated sense resistor for current regulation and
the current can be controlled through I²C.
When changing the current in the VCM, the lens
ringing is compensated with an advanced ringing
compensation function. Ringing compensation
reduces the needed time for auto focus significantly.
The device also has VCM short and open protection
functions.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV201
DSBGA (6)
PICOSTAR (6)
0.80 mm × 1.48 mm
0.80 mm × 1.48 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
2.5 to 4.8 V
SCL
SDA
DRV201
ISOURCE
+
Voice Coil
Motor Driver
ISINK ^–
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.