DRV8837CDSGR H-BRIDGE 12V 1A Motor Driver 8-WSON

DRV8837CDSGR H-BRIDGE 12V 1A Motor Driver 8-WSON is a high-efficiency integrated circuit specifically designed to drive a single brushed DC motor or other small loads. This motor driver utilizes a highly efficient H-bridge topology, enabling bidirectional control of the motor’s speed and direction with minimal power loss. The DRV8837 operates over a wide voltage range and offers robust protection features, safeguarding both the IC and the motor from common electrical faults. Consequently, design engineers widely select this compact 8-pin WSON package for space-constrained and battery-powered applications, delivering reliable performance and simplified control integration. Furthermore, its low standby current consumption makes it an excellent choice for optimizing the battery life of portable devices.

Key Features:

• Low R_DS(ON) H-Bridge: Integrates four N-channel MOSFETs with low on-resistance (R_DS(ON) ≤ 280 mΩ total high-side and low-side), maximizing power delivery to the motor.
• Wide Operating Voltage Range: The motor supply voltage (V_M) supports operation from 1.8 V to 11 V, making it versatile for single-cell Li-ion and multi-cell battery applications.
• High Current Capability: The driver delivers a continuous output current of up to 1 A, which adequately handles many small DC brushed motors.
• Integrated Protection: Robust features include cycle-by-cycle overcurrent protection (OCP), undervoltage lockout (UVLO), and thermal shutdown (TSD), enhancing system reliability.
• Control Interface: A simple PH/EN (Phase/Enable) interface facilitates easy integration with microcontrollers for precise direction and PWM speed control.

Technical Specifications:

• Motor Supply Voltage (V_M): 1.8 V to 11 V
• Logic Supply Voltage (V_CC): 1.8 V to 5 V
• Continuous Output Current (I_OUT): 1 A (Maximum)
• Peak Output Current (I_PEAK): 1.5 A (Maximum)
• Total Bridge R_DS(ON): ≈ 280 mΩ (High-side + Low-side)
• Shutdown Current: ≤ 100 nA (Extremely low power consumption)
• Operating Temperature Range: −40°C to +85°C

Mechanical Specifications:

• Package Type: 8-pin WSON (Very Small Outline No-Lead)
• Mounting: Surface Mount Technology (SMT)
• Thermal Pad: Large exposed thermal pad on the bottom for superior heat dissipation, maximizing current output.
• Moisture Sensitivity Level (MSL): Level 1

Dimensions:

• Body Length (Nominal): 2.0 mm
• Body Width (Nominal): 2.0 mm
• Body Height (Max): 0.8 mm (Ultra-low profile for thin designs)
• Pin Pitch: 0.5 mm
• Thermal Pad Size: ≈ 1.5 mm x 1.5 mm

Pinout and Wiring:

• Pin 1 (GND): Connect to the power and logic ground reference.
• Pin 2 (OUT1): Connect to one terminal of the DC motor.
• Pin 3 (V_M): Connect to the motor power supply (1.8 V to 11 V).
• Pin 4 (EN/PWM): The Enable pin; use a PWM signal here to control the motor speed.
• Pin 5 (OUT2): Connect to the second terminal of the DC motor.
• Pin 6 (V_CC): Connect to the logic power supply (1.8 V to 5 V).
• Pin 7 (PH): The Phase pin; use this pin to set the direction of the motor rotation (High/Low).
• Pin 8 (nSLEEP): The Active-Low Sleep pin; pull this pin High for normal operation.

Datasheet Reference:

• Download DRV8837 Datasheet

Commonly Used in:

• Portable Devices: Driving vibration motors, focus mechanisms, and actuators in handheld electronics.
• Battery-Powered Robotics: Controlling small DC motors in miniature robots and hobbyist projects.
• Camera Equipment: Managing the motors for auto-focus lenses and zoom functions.

Applications:

• Toy Control: Directing motion in remote-controlled toys and motorized components.
• Medical Devices: Powering small pumps and actuators where space and low power are critical.
• Point-of-Sale (POS) Equipment: Driving ticket dispensers, receipt printers, and cash drawer solenoids.

Equivalent Models:

• DRV8833: However, this is a dual H-bridge version from the same family, suitable when a designer needs to control two motors.
• DRV8838: A functionally similar single H-bridge with a different control interface (IN/IN mode).
• A3909 (Allegro MicroSystems): A comparable low-voltage, low-current motor driver IC with a different package option.

Package Includes:

• 1 x DRV8837CDSGR H-BRIDGE 12V 1A Motor Driver 8-WSON