92706 / 62504 JO IM No.7982-1/14

LB8653T

LB8653FN

Features

• An actuator driver for single focus digital camera is implemented on a single chip.

(1) Supports a constant voltage for the AF H-bridge

×2 : a stepping motor (STM) ×1.

- Constant voltage drive.

- Enables 1-phase, 1-2 phase and 2-phase excitation.

- VC1 and VC2 allow the constant voltage for each channel to be set independently.

(2) Supports a constant current for the shutter H-bridge

×1 : a voice coil motor (VCM) ×1.

- Constant current drive.

- A fast charge/discharge circuit allows for stabilization of response speed for the continuous drive mode.

- Allows offsetting of the constant current rising waveform with an external CR.

(The external CR is not required when an offset is not performed.)

→ Prevent current rising variation of coil caused by supply voltage fluctuation.

- Implements regenerative brake logic.

(3) Supports a constant voltage for the iris H-bridge

×1 : a voice coil motor (VCM) ×1.

- Constant voltage drive.

- VC4 allows the independent constant voltage to be set.

[Actuator applications]

Focus

Shutter

Iris

Applications

STM

VCM

VCM

Ordering number : ENN7982

Monolithic Digital IC

DSC Motor Driver

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products described or contained herein.