BU64292GWZ-TR.pdf
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The BU64292GWZ-TR is a compact uni-directional VCM driver from Rohm Semiconductor, developed for autofocus (AF) actuation in mobile camera modules. It uses constant-current control to drive the VCM smoothly and accurately, helping the lens settle faster and reducing focus hunting in real-world camera scenes.
The device supports 10-bit resolution current control and includes ISRC mechanical ringing compensation, which is useful for minimizing overshoot and vibration when the lens position changes quickly. Control is performed through a 2-wire serial interface (I²C FAST-MODE Plus compatible), making it easy to integrate into camera ISP/SoC systems where I²C is already available.
In addition, the BU64292GWZ-TR integrates a current sense resistor, reducing external BOM, and is supplied in an ultra-small 6-XFBGA (UCSP25L1) package suited for high-density layouts. (Note: ROHM indicates an EOL/Last Time Buy status for this product family, so new designs should evaluate replacement options early.)
Constant-current drive with ringing compensation helps the lens settle faster with less overshoot, improving focus stability in burst shots, video autofocus, and low-light conditions.
Uses a 2-wire I²C interface (FAST-MODE Plus compatible), enabling straightforward control from an application processor, ISP, or camera controller.
The 6-XFBGA (UCSP25L1) footprint enables compact optical modules and high-density PCB layouts, supporting thinner device designs.
Integrated current sense resistor reduces external components and helps simplify the design, improving consistency across manufacturing.
Maintains consistent VCM current for predictable lens movement, reducing sensitivity to coil resistance changes and supply variation.
Fine step control supports smooth positioning and repeatability, helping autofocus algorithms achieve more stable focus lock.
Mechanical ringing compensation helps reduce oscillation in the VCM-lens system, improving response time and reducing blur from micro-vibration.
2-wire serial interface provides robust control in camera module architectures that use I²C for sensor, actuator, and EEPROM communication.
Reduces external components and improves current measurement consistency for mass production.
Maximum output current is selectable, allowing tuning for different VCM modules while protecting the actuator.
| Parameter | Value / Condition |
|---|---|
| Manufacturer | Rohm Semiconductor |
| Part Number | BU64292GWZ-TR |
| Usage | VCM (Voice Coil Motor) for Autofocus |
| Drive Direction | Uni-directional |
| Control Interface | I²C (2-wire), FAST-MODE Plus compatible |
| Control Resolution | 10-bit current control |
| Special Function | ISRC mechanical ringing compensation |
| Current Sensing | Integrated current sense resistor |
| Operating Temperature | -25 °C to +85 °C |
| Package | 6-XFBGA (UCSP25L1 / CSPBGA) |
| Product Status | Last Time Buy (EOL announced) |
Since BU64292GWZ-TR is a uni-directional VCM autofocus driver with I²C control, replacements should be chosen by comparing: drive direction (uni/bi), I²C register set, max output current, package footprint, and compensation behavior. Below are commonly referenced alternatives in the same VCM/AF driver category:
Practical tip: if your design requires the same "uni-directional" behavior, verify that a bi-directional driver can be configured safely (or that your control firmware can handle direction/offset). Also validate the actuator current range and lens module dynamics to avoid ringing and focus drift.
Rohm Semiconductor develops analog and power management ICs, motor/actuator drivers, and discrete devices widely used in consumer electronics, industrial systems, and automotive platforms. In camera modules, ROHM's VCM driver families are used to achieve compact, low-noise, and accurate autofocus control with standardized serial interfaces.
For long-term supply planning, it is recommended to check lifecycle status and consider newer product families when a part is labeled as Last Time Buy.
Autofocus lens actuation for compact rear/front camera assemblies.
VCM autofocus in mobile platforms where PCB area and power are limited.
Small optical modules in IoT devices and portable scanners.
Miniature autofocus mechanisms in compact consumer imaging products.
Each lot is checked for packaging integrity and label consistency. Lot traceability and basic documentation are maintained to support quality audits and project-level accountability.
For lifecycle-sensitive parts (including Last Time Buy items), additional authenticity checks may be applied, such as marking inspection, X-ray sampling, and parameter screening based on customer requirements.
Devices are handled in ESD-safe environments. Moisture-sensitive components follow MSL practices to preserve solderability and reduce reflow-related risks.
Prior to shipment, orders are re-verified for part number, quantity, and packing condition to minimize receiving issues and production-line interruptions.
We currently provide peer-to-peer order processing. Submit an RFQ for BU64292GWZ-TR, and our professional agent will contact you with competitive global pricing and guide you to complete the order once you accept the offer.
Our experienced QC team strictly verifies and tests BU64292GWZ-TR. Only qualified suppliers who pass our audit can list BU64292GWZ-TR on OEM STOCK GLOBAL LIMITED. We pay close attention to sourcing channels and product quality so you can purchase with confidence.
Pricing and inventory for BU64292GWZ-TR fluctuate and are updated periodically (typically within 24 hours). Quotations generally remain valid for 5 days unless otherwise stated.
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We support DHL, UPS, FedEx, TNT, and Registered Mail. Shipping insurance is available. After dispatch, you will receive an email with tracking information. Note: Carriers may take up to 24 hours to show tracking events. Typical transit time: 3–5 days by express; 25–60 days by registered mail.
We perform Pre-Shipment Inspection (PSI) on randomly selected units before shipping. If there is an issue with BU64292GWZ-TR, returns/replacements are accepted when:
Steps: (1) Inform us within 90 days; (2) Obtain Return Authorization (RMA) before sending items back.
Please contact us for technical documents and support related to ROHM Semiconductor BU64292GWZ-TR, including pin diagrams and datasheets. Our team will respond promptly.
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