Overview
The DRV8838DSGR is a low-voltage H-bridge motor driver produced by Texas Instruments. It is part of the DRV883x family, designed to provide an integrated motor driver solution for various applications such as cameras, consumer products, toys, and other low-voltage or battery-powered motion control systems. The device can drive one DC motor or other loads like solenoids, utilizing N-channel power MOSFETs configured as an H-bridge to drive the motor winding. An internal charge pump generates the necessary gate drive voltages.
Key Specifications
| Parameter | Value | Description |
|---|---|---|
| Package | WSON (DSG) 8-pin | Package type and pin count |
| Operating Temperature Range | -40°C to 85°C | Operating temperature range |
| Motor Supply Voltage (VM) | 0 to 11 V | Motor power supply voltage range |
| Logic Supply Voltage (VCC) | 1.8 to 7 V | Logic power supply voltage range |
| Maximum Drive Current | 1.8 A | Maximum output current |
| MOSFET On-Resistance (HS + LS) | 280 mΩ | On-resistance of the MOSFETs |
| Input Interface | PH-EN | Type of input interface for the DRV8838 |
| Low-Power Sleep Mode Current | 120 nA | Maximum sleep current in low-power mode |
| Protection Features | VCC Undervoltage Lockout (UVLO), Overcurrent Protection (OCP), Thermal Shutdown (TSD) | Internal protection features |
Key Features
- H-Bridge Motor Driver: Drives a DC motor or other loads.
- Low MOSFET On-Resistance: HS + LS 280 mΩ.
- Maximum Drive Current: Up to 1.8 A.
- Separate Motor and Logic Supply Pins: Motor VM: 0 to 11 V, Logic VCC: 1.8 to 7 V.
- PWM or PH-EN Interface: The DRV8838 uses a PH-EN input interface.
- Low-Power Sleep Mode: With a maximum sleep current of 120 nA, enabled using the nSLEEP pin.
- Small Package and Footprint: 8-pin WSON with thermal pad, 2.0 × 2.0 mm.
- Protection Features: VCC Undervoltage Lockout (UVLO), Overcurrent Protection (OCP), and Thermal Shutdown (TSD).
Applications
- Cameras: Including DSLR lenses.
- Consumer Products
- Toys
- Robotics
- Medical Devices
Q & A
- What is the maximum drive current of the DRV8838?
The maximum drive current of the DRV8838 is 1.8 A.
- What is the operating temperature range of the DRV8838?
The operating temperature range is -40°C to 85°C.
- What type of input interface does the DRV8838 use?
The DRV8838 uses a PH-EN input interface.
- What are the protection features of the DRV8838?
The DRV8838 includes VCC Undervoltage Lockout (UVLO), Overcurrent Protection (OCP), and Thermal Shutdown (TSD).
- How do you enable the low-power sleep mode on the DRV8838?
The low-power sleep mode is enabled using the nSLEEP pin.
- What is the maximum sleep current of the DRV8838 in low-power mode?
The maximum sleep current is 120 nA.
- What is the package type and size of the DRV8838?
The DRV8838 comes in an 8-pin WSON package with a size of 2.0 × 2.0 mm.
- What are the typical applications of the DRV8838?
Typical applications include cameras, consumer products, toys, robotics, and medical devices.
- What is the on-resistance of the MOSFETs in the DRV8838?
The on-resistance of the MOSFETs is 280 mΩ (HS + LS).
- Can the DRV8838 drive other loads besides DC motors?
Yes, the DRV8838 can drive other loads such as solenoids.
