Overview
The DRV8837CDSGT is a 1-A low-voltage H-bridge motor driver produced by Texas Instruments. This device is designed to drive DC motors or other loads in a variety of applications, including cameras, DSLR lenses, consumer products, toys, robotics, and medical devices. The DRV8837C integrates the necessary driver FETs and control circuitry into a single package, significantly reducing the component count of motor driver systems. It operates on a motor power supply voltage range of 0 to 11 V and control logic that can operate on 1.8-V to 5-V rails. The device features a standard PWM interface for controlling the motor and includes a low-power sleep mode to minimize power consumption when not in use.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| VM Operating Voltage | 0 | - | 11 | V |
| VCC Operating Voltage | 1.8 | - | 7 | V |
| Maximum Drive Current | - | - | 1 | A |
| MOSFET On-Resistance (HS + LS) | - | - | 1 Ω | Ω |
| VM Sleep Mode Supply Current | 30 | 95 | - | nA |
| VCC Sleep Mode Supply Current | 5 | 25 | - | nA |
| Thermal Shutdown Temperature | 150 | - | 180 | °C |
| Package Type | - | - | WSON-8-EP (2x2 mm) | - |
Key Features
- H-Bridge Motor Driver: Drives one DC motor or other devices like solenoids.
- Low MOSFET On-Resistance: HS + LS 1 Ω.
- PWM Interface: Standard PWM interface (IN1/IN2) for motor control.
- Low-Power Sleep Mode: Enabled via the nSLEEP pin with a maximum sleep current of 120 nA.
- Protection Features: VCC undervoltage lockout, overcurrent protection, and thermal shutdown.
- Small Package and Footprint: 8-pin WSON package with an exposed thermal pad, measuring 2.0 × 2.0 mm.
Applications
- Cameras and DSLR lenses
- Consumer products
- Toys
- Robotics
- Medical devices
Q & A
- What is the maximum drive current of the DRV8837C?
The maximum drive current of the DRV8837C is 1 A.
- What is the operating voltage range for the VM supply?
The VM operating voltage range is from 0 to 11 V.
- How is the sleep mode enabled on the DRV8837C?
The sleep mode is enabled by bringing the nSLEEP pin to a logic-low state.
- What protection features are included in the DRV8837C?
The DRV8837C includes VCC undervoltage lockout, overcurrent protection, and thermal shutdown.
- What is the package type and size of the DRV8837CDSGT?
The package type is WSON-8-EP, and it measures 2.0 × 2.0 mm.
- How is the motor controlled using the DRV8837C?
The motor is controlled using a standard PWM interface (IN1/IN2).
- What is the thermal shutdown temperature of the DRV8837C?
The thermal shutdown temperature is between 150°C and 180°C.
- Can the VCC and VM supplies be connected together?
Yes, the VCC and VM supplies can be connected together if the supply voltage is between 1.8 and 7 V.
- What is the purpose of the nSLEEP pin?
The nSLEEP pin is used to enable the low-power sleep mode.
- What are the recommended bypass capacitors for the VM and VCC pins?
The recommended bypass capacitors are 0.1-µF ceramic capacitors rated for the VM and VCC supplies.
