L9110S Dual Channel Motor Driver IC SOP-8

L9110S Dual Channel Motor Driver IC SOP-8 is a compact and highly efficient H-bridge driver integrated circuit, expertly designed to manage the direction and speed of two independent DC motors or a single four-wire two-phase stepper motor. This IC provides a robust interface between low-voltage microcontrollers and moderate-current motors. Therefore, system designers frequently choose this chip for battery-powered or space-constrained projects. The L9110S features two full H-bridge driver circuits integrated onto a single monolithic chip. Consequently, this architecture delivers exceptional thermal performance and high integration, simplifying circuit design and minimizing component count on the PCB. Furthermore, its low standby current consumption makes it an ideal choice for power-sensitive applications.

Key Features:

• Dual H-Bridge Configuration: The chip integrates two independent H-bridge drivers, allowing simultaneous control over two DC motors or bidirectional control of one stepper motor.
• Low Quiescent Current: The L9110S consumes very little power when idle, making it highly suitable for portable and battery-operated devices.
• Wide Operating Voltage: It supports a motor supply voltage (V_M) range from 2.5 V to 12 V, accommodating diverse motor types and power sources.
• High Output Current Capability: Each channel reliably delivers continuous output current of 800 mA, managing common small DC motor loads effectively.
• Integrated Protection: Built-in over-temperature protection circuitry automatically shuts down the device if internal temperatures become excessive, ensuring reliability and longevity.
• CMOS/TTL Compatible Inputs: The control pins interface directly with 3.3 V or 5 V logic levels from microcontrollers (e.g., Arduino, Raspberry Pi).

Technical Specifications:

• Motor Supply Voltage (V_M): 2.5 V ≤ V_M ≤ 12 V
• Logic Supply Voltage (V_CC): 2.5 V ≤ V_CC ≤ 12 V
• Continuous Output Current (I_out): 800 mA per channel (DC)
• Peak Output Current (I_peak): 1.5 A (Non-repetitive pulse)
• Operating Temperature Range: −30°C to +80°C
• Standby Current (I_sleep): ≈ 0.1 μA

Mechanical Specifications:

• Package Type: SOP-8 (Surface Mount Device – SMD)
• Body Material: Plastic (Lead Frame Package)
• Moisture Sensitivity Level (MSL): Typically Level 3
• Internal Structure: Two full H-Bridge drivers

Dimensions:

• Body Length (E): ≈ 4.9 mm
• Body Width (D): ≈ 3.9 mm
• Pitch (e): 1.27 mm (Standard SOP-8 pin spacing)
• Total Height (A): ≈ 1.5 mm (Extremely low profile for compact boards)

Pinout and Wiring:

• Pin 1 (B-IA): Control Input A (Connect to MCU GPIO for Motor B direction control).
• Pin 2 (B-IB): Control Input B (Connect to MCU GPIO for Motor B direction control).
• Pin 3 (A-OA): Motor A Output A (Connect to one terminal of DC Motor A).
• Pin 4 (A-OB): Motor A Output B (Connect to the other terminal of DC Motor A).
• Pin 5 (GND): Ground connection for the logic and motor power stages.
• Pin 6 (V_CC): Logic Supply Voltage Input (Typically 3.3V or 5V).
• Pin 7 (B-OA): Motor B Output A (Connect to one terminal of DC Motor B).
• Pin 8 (B-OB): Motor B Output B (Connect to the other terminal of DC Motor B).

Datasheet Reference:

• Download L9110 Dual Channel Motor Driver Datasheet

Commonly Used in:

• Robotics Platforms: Serving as the main drive circuit for wheeled and tracked mobile robots (e.g., small line-following robots).
• Toy Manufacturing: Integrators use this affordable chip in remote-controlled cars, toys, and educational kits.
• 3D Printer/CNC Modules: Controlling small cooling fans or accessory motors within these systems.

Applications:

• DC Motor Speed Control: Utilizing Pulse Width Modulation (PWM) on the input pins to precisely manage motor velocity.
• Stepper Motor Driving: Driving small, two-phase stepper motors with a current capacity under 800 mA.
• Valve and Solenoid Actuation: Controlling the actuation and de-actuation of low-power solenoids and electronic valves.

Equivalent Models:

• HG7881: A similar low-voltage, dual H-bridge driver often found in a DIP package, offering comparable performance.
• L298N (for high current): While not a direct pin-compatible equivalent, the L298N performs the same dual-motor driving function, however, it handles significantly higher power.
• DRV8833: A modern, sometimes preferred alternative that offers better current regulation and lower voltage operation, though often at a higher cost.

Package Includes:

• 1 x L9110S Dual Channel Motor Driver IC SOP-8