This document introduces the System Lens Driver Series for Mobile Phone Cameras from ROHM. The series includes models such as BD6883GUL, BH6453GUL, BD6886GUL, and BD6369GUL, which are used in auto focus systems for mobile phone cameras. The drivers feature ultra-small chip size, low ON-resistance, ESD resistance, built-in constant-voltage driver, and protection functions such as UVLO and TSD.
The BH6453GUL is a ultra‑small lens driver for voice‑coil motor autofocus systems. It provides a constant‑current half‑bridge and a constant‑voltage half‑bridge, with built‑in UVLO, TSD and ESD protection.
The document includes absolute maximum ratings, operating conditions, detailed electrical characteristics, block diagrams, pin tables and packaging information for ordering the part.
| Package size | 1.5 mm × 0.9 mm × 0.55 mm |
|---|---|
| High‑side PMOS ON‑Resistance (typ.) | 1.2 Q |
| Low‑side NMOS ON‑Resistance (typ.) | 0.40 Q |
| ESD resistance (HBM) | 8 kV |
| UVLO voltage | 1.6 V – 2.2 V |
| Control input voltage range | -0.5 V to VCC+0.5 V |
The BH6453GUL comes in an ultra‑small package measuring 1.5 mm × 0.9 mm × 0.55 mm.
The device is rated for 8 kV ESD protection under the Human Body Model.
The under‑voltage lock‑out (UVLO) triggers between 1.6 V and 2.2 V.
The high‑side PMOS has a typical ON‑resistance of 1.2 Q.