Overview

The LB1931T is a driver IC for solenoid coils that provide a constant current control function. The LB1931T features low-saturation output and a hold function, and is optimal for control of plunger shutters in digital cameras.

Functions and Features

• Constant current control (IO = 400 mA when Rf = 0.5 Ω)

• Ultraminiature package (MSOP8: 150 mil)

• Built-in thermal protection circuit

• Hold function

• Includes a rapid charge/rapid discharge circuit for stable shutter operation.

• Built-in reference voltage circuit (0.2 V typical)