LB8658FN Datasheet, PDF (1/16 Pages) Sanyo Semicon Device – Monolithic Digital IC DSC Motor Driver

Ordering number : ENN7983
LB8658FN
LB8658PL
Monolithic Digital IC
DSC Motor Driver
Features
• An actuator driver for 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.
- ICH allows current setting for each current carrying direction.
→ Supports current suppression while the shutter is Open.
- A fast charge/discharge circuit allows for stabilization of response speed of the continuous drive mode.
- Allows offsetting of the constant current rising waveform with an external C.
(The external C is not required when an offset is not performed)
→ Prevents 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.
(4) Supports a constant voltage for the zoom H-bridge ×1 : a DC motor (DCM) ×1.
- Constant voltage drive.
- VC3 allows the independent constant voltage to be set.
- Built-in short brake.
(5) Supports an open collector output for the photo sensor ×3 : a photo sensor (PR/PI) ×3.
- AFPI and ZMPI are turned ON in synchronization with focus mode and zoom mode, respectively.
- ZMPR can be controlled independently, regardless of mode.
[Actuator applications]
Focus
Shutter
Iris
Applications
STM
VCM
VCM
Zoom
DCM
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92706 / 62504 JO IM No.7983-1/16