Overview
The DRV8838DSGT, produced by Texas Instruments, is a part of the DRV883x family of low-voltage H-bridge motor drivers. This device is designed to drive DC motors or other loads efficiently and reliably. It features a compact 8-pin WSON (DSG) package with a thermal pad, making it suitable for space-constrained applications. The DRV8838DSGT operates with separate motor and logic supply pins, allowing for flexible power management. It is controlled via a PHASE/ENABLE (PH/EN) interface, which is compatible with industry-standard devices.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Motor Supply Voltage (VM) | 0 to 11 | V |
| Logic Supply Voltage (VCC) | 1.8 to 7 | V |
| Maximum Drive Current | 1.8 | A |
| MOSFET On-Resistance (HS + LS) | 280 | mΩ |
| Operating Temperature Range | -40 to 85 | °C |
| Package Type | WSON (DSG) 8-pin | |
| Package Size | 2.0 × 2.0 mm | |
| Thermal Shutdown Temperature | 150 to 180 | °C |
| Overcurrent Protection Trip Level | 1.9 to 3.5 | A |
Key Features
- H-Bridge Motor Driver: Drives a DC motor or other loads efficiently.
- Low MOSFET On-Resistance: HS + LS 280 mΩ, reducing energy losses.
- Separate Motor and Logic Supply Pins: Motor VM: 0 to 11 V, Logic VCC: 1.8 to 7 V.
- PHASE/ENABLE Interface: Compatible with industry-standard devices, using PH and EN inputs.
- Low-Power Sleep Mode: With a maximum sleep current of 120 nA, enabled via the nSLEEP pin.
- Protection Features: Undervoltage lockout (UVLO), overcurrent protection (OCP), and thermal shutdown (TSD).
- Compact Package: 8-pin WSON (DSG) package with a thermal pad, measuring 2.0 × 2.0 mm.
Applications
- Cameras and DSLR Lenses: For precise motor control in camera systems.
- Consumer Products: Suitable for various consumer electronics requiring motor control.
- Toys and Robotics: Ideal for motorized toys and robotic applications.
- Medical Devices: Used in medical equipment that requires reliable and efficient motor control.
Q & A
- What is the maximum drive current of the DRV8838DSGT?
The maximum drive current is 1.8 A.
- What is the operating temperature range of the DRV8838DSGT?
The operating temperature range is -40°C to 85°C.
- How is the DRV8838DSGT controlled?
The DRV8838DSGT is controlled via a PHASE/ENABLE (PH/EN) interface.
- What are the protection features of the DRV8838DSGT?
The device includes undervoltage lockout (UVLO), overcurrent protection (OCP), and thermal shutdown (TSD).
- How do I enable the low-power sleep mode on the DRV8838DSGT?
The low-power sleep mode is enabled by setting the nSLEEP pin to logic low.
- What is the package type and size of the DRV8838DSGT?
The package type is WSON (DSG) with 8 pins, and the size is 2.0 × 2.0 mm.
- What are the typical applications of the DRV8838DSGT?
Typical applications include cameras, consumer products, toys, robotics, and medical devices.
- What is the MOSFET on-resistance of the DRV8838DSGT?
The MOSFET on-resistance is 280 mΩ (HS + LS).
- How do I connect the motor supply and logic supply pins?
The motor supply (VM) should be connected to the motor power source, and the logic supply (VCC) should be connected to the logic power source. Both should be bypassed to GND with 0.1-µF ceramic capacitors.
- What is the thermal shutdown temperature of the DRV8838DSGT?
The thermal shutdown temperature range is 150°C to 180°C.
