DRV201A Texas instruments

DRV201A

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DRV201A

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Описание

The DRV201A 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 DRV201A 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.

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
- Undervoltage Lockout (UVLO)
- Thermal Shutdown
- Internal Current Limit for VCM Driver
- 4-kV ESD-HBM
I²C Interface
Improved PWM-to-Linear Mode Setting Time vs.
DRV201
Improved EMC Performance vs. DRV201
Improved PWM-to-Linear Mode Settling Time vs.
DRV201
Improved EMC Performance vs. DRV201
Operating Temperature Range: –40°C to 85°C
6-Ball WCSP Package With 0.4-mm Pitch
Max Die Size: 0.806 mm × 1.49 mm
Max Package Height: 0.3 mm

Vs (max) (V)	4.8
Vs (min) (V)	2.5
Peak output current (A)	0.24
Operating temperature range (°C)	-40 to 85
Rating	Catalog