BU64291GWZ-TR

Audio Special Purpose Overview

The BU64291GWZ-TR is a Voice Coil Motor (VCM) driver manufactured by ROHM Semiconductor. It features selectable linear and PWM operational modes to optimize system power efficiency or control precision. The device supports a 2-wire serial interface (I²C compatible) with maximum transfer rates of 100 kHz for Standard Mode and 400 kHz for Fast Mode. It provides a 100 mA output current with 10-bit resolution current control and includes ISRC (Integrated Sense Resistor Compensation) for mechanical ringing compensation. The component operates within a supply voltage range of 2.3 V to 4.8 V, consumes approximately 1 mA of operating supply current, and is housed in a UCSP25L1-6 package rated for temperatures from -25°C to +85°C.

Audio Special Purpose Feature Summary

• Selectable Linear and PWM operational modes
• Current source and sink output capability
• 10-bit resolution current control
• ISRC (Integrated Sense Resistor Compensation) for mechanical ringing reduction
• 2-wire Serial Interface (I²C compatible)
• Output Current: 100 mA
• Operating Supply Current: 1 mA
• Supply Voltage Range: 2.3 V to 4.8 V
• Package: UCSP25L1-6

Audio Special Purpose Applications

• Voice Coil Motor (VCM) drivers for camera auto-focus systems
• Optical modules requiring precise lens positioning

Audio Special Purpose Procurement Notes

This component is classified as NRND (Not Recommended for New Designs). Verification of the specific datasheet revision and any discontinuance notifications is required before integration into new hardware designs due to potential end-of-life constraints.

Audio Special Purpose Selection Notes

Select this part for applications requiring low-power VCM control via a simple serial interface. Ensure the design accommodates the specific UCSP25L1-6 footprint. Verify that the system voltage remains within the 2.3 V to 4.8 V range for proper operation. Note that the maximum bit transfer rate is limited to 400 kHz (Fast Mode).