RZ7899 25V 4A Control DC Motor IC SOP-8

RZ7899 25V 4A Control DC Motor IC SOP-8 is a highly integrated, single-chip H-bridge driver designed to efficiently control DC brush motors, solenoids, and small relays. This specialized IC can handle continuous currents up to 2.5 A and instantaneous peak currents up to 4 A, making it suitable for driving mid-power loads. Consequently, it provides robust motor control in a compact SOP-8 package. The RZ7899 offers precise speed and direction control through simple PWM and DIR input signals, simplifying the interface with microcontrollers. Furthermore, its low-resistance output MOSFETs minimize power loss and heat generation, which is crucial for maximizing battery life and reducing the need for external heat sinks. Therefore, integrate the RZ7899 into battery-powered devices and portable equipment where small size, high efficiency, and strong current capability are mandatory.

Key Features:

• High Output Current: Provides a continuous output current of 2.5 A and handles transient peak current surges up to 4 A, driving mid-sized motors effectively.
• Wide Operating Voltage: Operates efficiently across a wide supply voltage range from 2 V to 25 V, supporting 3.7 V Li-ion batteries up to 24 V systems.
• Low On-Resistance: Features low R_DS(ON) of the internal MOSFETs, which minimizes power dissipation and improves overall system efficiency.
• Full Protection Suite: Includes essential protection features like Over Current Protection (OCP), Thermal Shutdown (TSD), and Under Voltage Lockout (UVLO).
• Two Control Modes: Supports both PWM control for speed regulation and DIR control for instantaneous motor direction reversal.

Technical Specifications:

• Maximum Supply Voltage (V_CC): 25 V
• Minimum Supply Voltage (V_CC): 2.0 V
• Continuous Output Current (I_OUT): 2.5 A
• Peak Output Current (I_PEAK): 4.0 A (t ≤ 10 ms)
• PWM Frequency Range: Up to 100 kHz
• Quiescent Current (I_Q): Low current draw in sleep mode for battery preservation.
• Logic Input Voltage: 1.8 V to 5 V (Compatible with 3.3 V and 5 V logic)

Mechanical Specifications:

• Package Type: SOP-8 (Small Outline Package, 8 pins)
• Mounting: Surface Mount Technology (SMT/SMD)
• Thermal Pad: Integrated exposed pad on the backside for enhanced thermal dissipation (connecting to GND is recommended).
• Lead-Free Status: Typically RoHS compliant and Lead-Free.

Dimensions:

• Body Length: ≈ 4.9 mm
• Body Width: ≈ 3.9 mm
• Body Height: ≈ 1.5 mm
• Pin Pitch: 1.27 mm (Standard for SOP-8)
• Thermal Resistance ($\Theta_{JA}$): Low thermal resistance when properly soldered, enabling high current output.

Pinout and Wiring:

• Pin 1 (GND): Connect to the circuit ground and the exposed thermal pad.
• Pin 2 (OUT1): Connect to one terminal of the DC motor.
• Pin 3 (VCC): Connect to the motor power supply (2 V to 25 V).
• Pin 4 (OUT2): Connect to the other terminal of the DC motor.
• Pin 5 (DIR): Digital input for setting the motor direction (High/Low).
• Pin 6 (PWM): Digital input for applying the Pulse Width Modulation signal to control motor speed.
• Pin 7 (VCC): Connect to the motor power supply (2 V to 25 V).
• Pin 8 (GND): Connect to the circuit ground.

Datasheet Reference:

• Download RZ7899 DC Motor Driver Datasheet

Commonly Used in:

• Robotics and Drones: Driving small drive motors, grippers, and actuator mechanisms in mobile robots and UAVs.
• Small Appliances: Controlling motors in electric toothbrushes, toy cars, small vacuum cleaners, and portable fans.
• Battery-Powered Devices: Essential for maximizing runtime in power-sensitive, portable electronic equipment.

Applications:

• Solenoid and Relay Driving: The H-bridge configuration allows for versatile control of inductive loads requiring bidirectional current.
• Automated Locking Mechanisms: Providing robust and protected control for electronic door locks and access control systems.
• DC Fan Speed Control: Implementing variable speed control and reversal in cooling systems.

Equivalent Models:

• DRV8833 (Texas Instruments): A popular dual H-bridge driver with similar voltage range, however, it generally offers lower continuous current (1.5 A).
• TB6612FNG (Toshiba): Another widely used motor driver IC offering dual H-bridge output, often used when driving two smaller DC motors.
• L9110S (STMicroelectronics): A lower-current dual motor driver often found in cheaper modules, which can replace the RZ7899 in very low-power applications.

Package Includes:

• 1 x RZ7899 25V 4A Control DC Motor IC SOP-8