Overview
The L6208PD, produced by STMicroelectronics, is a DMOS fully integrated stepper motor driver designed to drive two-phase bipolar stepper motors. This device is realized in BCD technology, combining isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. It includes all the necessary circuitry for driving a bipolar stepper motor, such as a dual DMOS full bridge, a constant off-time PWM current controller, and a phase sequence generator. The L6208PD is available in PowerSO36 and SO24 packages, offering features like non-dissipative overcurrent protection and thermal shutdown, making it a robust solution for motor control applications.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Supply Voltage | 8 V to 52 V |
| Output Peak Current | 5.6 A (2.8 A RMS) |
| RDS(ON) | 0.3 Ω (typical at Tj = 25 °C) |
| Operating Frequency | Up to 100 KHz |
| Package Type | PowerSO36, SO24 (20 + 2 + 2) |
| Pin Count | 38 |
| Minimum Operating Temperature | -40 °C |
| Maximum Operating Temperature | +150 °C |
| Dimensions | 16 mm x 11.1 mm x 3.3 mm |
Key Features
- Non-dissipative overcurrent protection on high-side power MOSFETs
- Dual independent constant tOFF PWM current controllers
- Fast/slow decay mode selection
- Fast decay quasi-synchronous rectification
- Decoding logic for stepper motor full and half step drive
- Cross conduction protection
- Thermal shutdown
- Undervoltage lockout
- Integrated fast freewheeling diodes
Applications
The L6208PD is suitable for various applications, including:
- Industrial automation
- Personal electronics
- Any system requiring precise control of bipolar stepper motors
Q & A
- What is the operating supply voltage range of the L6208PD?
The operating supply voltage range is from 8 V to 52 V.
- What is the maximum output peak current of the L6208PD?
The maximum output peak current is 5.6 A (2.8 A RMS).
- What is the typical RDS(ON) value of the L6208PD at 25 °C?
The typical RDS(ON) value is 0.3 Ω at Tj = 25 °C.
- What is the maximum operating frequency of the L6208PD?
The maximum operating frequency is up to 100 KHz.
- What types of packages are available for the L6208PD?
The L6208PD is available in PowerSO36 and SO24 (20 + 2 + 2) packages.
- Does the L6208PD have overcurrent protection?
Yes, it features non-dissipative overcurrent protection on the high-side power MOSFETs.
- What are the key protection features of the L6208PD?
The key protection features include thermal shutdown, undervoltage lockout, and cross conduction protection.
- Can the L6208PD be used for both full and half step drive?
Yes, it includes decoding logic for both full and half step drive.
- What is the minimum operating temperature of the L6208PD?
The minimum operating temperature is -40 °C.
- What are the dimensions of the L6208PD in the PowerSO36 package?
The dimensions are 16 mm x 11.1 mm x 3.3 mm.
