ST valve driver ICs control and drive electromechanical valves — including solenoid, proportional, and peak-and-hold types — by precisely regulating voltage and current for accurate valve actuation in response to control inputs.
They play a critical role in modern automotive and industrial systems, supporting safe, efficient, and reliable operation across applications such as braking, fuel injection, e-suspension, and pneumatic or hydraulic control.
Product types
4-channel valve driver with current control
The L9305 is a 4-channel valve driver designed for automotive applications. It features independent, configurable low-side/high-side drivers, with integrated current control loop and fail-safe pre-drivers. The device operates at 12 V, supports SPI communication, and provides accurate current sensing. The L9305 is ISO26262 compliant, ASIL-D system ready, AEC-Q100 Grade 1 qualified, and available in PowerSSO36 and TQFP48 packages.
4-channel low-side power switch with current regulation
The L9352B is a 4-channel low-side power switch designed for automotive applications, optimized to drive inductive loads such as ABS valves. It features two 5 A conventional switches and two 2.5 A current regulators. . The L9352B is available in a PowerSO-36 package with an integrated cooling area.
12-channel configurable driver
The L9301 is an SPI-controlled octal driver combining 4 high/low-side and 4 low-side Power MOS channels, configurable for ON-OFF or PWM operation. It features integrated recirculation diodes, advanced diagnostics, and configurable slew rate for EMC optimization, making it ideal for complex automotive load control. L9301 is AEC-Q100 qualified and is available in PowerSSO36 package.
8-channel pre-driver
The L9945 is an 8-channel configurable MOSFET pre-driver for low-side, high-side, peak & hold, and H-bridge load control in 12 V and 24 V automotive systems. It features advanced diagnostics, comprehensive safety functions, EMI-optimized gate control, and is configurable via a 32-bit SPI protocol. L9945 is AECQ100 qualified and is available in TQFP64 package.
Applications
Valve driver ICs are a key building block in automotive and industrial automation, where precise and repeatable valve actuation directly affects system safety and efficiency. Typical applications include anti-lock braking, fuel injection, electronic suspension, and pneumatic or hydraulic control in industrial machinery.
