Overview
The L297D013TR is a Stepper Motor Controller IC produced by STMicroelectronics. It is designed to generate four-phase drive signals for two-phase bipolar and four-phase unipolar step motors in microcomputer-controlled applications. The L297D013TR simplifies motor control by requiring only clock, direction, and mode input signals, thereby reducing the burden on the microprocessor and programmer. It is available in SO20 packaging and can be used with monolithic bridge drives such as the L298N or L293E, or with discrete transistors and Darlington arrays.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Supply Voltage (Vs) | 4.75 - 7 | V |
| Quiescent Supply Current (Is) | 50 - 80 | mA |
| Input Voltage (Vi) | 0.6 - 2 Vs | V |
| Input Current (Ii) | 100 µA (Low), 10 µA (High) | µA |
| Enable Input Voltage (Ven) | 1.3 - 2 Vs | V |
| Enable Input Current (Ien) | 100 µA (Low), 10 µA (High) | µA |
| Phase Output Voltage (Vo) | 0.4 (Low), 3.9 (High) | V |
| Inhibit Output Voltage (Vinh) | 0.4 (Low), 3.9 (High) | V |
| Storage and Junction Temperature | -40 to +150 | °C |
| Thermal Resistance Junction-Ambient | 100 | °C/W |
Key Features
- RESET INPUT & HOME OUTPUT: Allows for resetting the translator to the home position and indicating the initial state.
- FEW EXTERNAL COMPONENTS: Minimizes the number of external components required.
- NORMAL/WAVE DRIVE: Supports normal drive (two-phase-on) and wave drive (one-phase-on) modes.
- CLOCKWISE/ANTICLOCKWISE DIRECTION: Controls the direction of motor rotation.
- HALF/FULL STEP MODES: Supports half-step and full-step operation.
- PROGRAMMABLE LOAD CURRENT: Allows for programming the peak load current using a voltage divider on the Vref input.
- ENABLE INPUT: Enables or disables the chip.
- SWITCHMODE LOAD CURRENT REGULATION: Uses on-chip PWM chopper circuits for switch-mode control of the current in the windings.
Applications
The L297D013TR is designed for use in various step motor driving applications, including:
- Microcomputer-controlled systems.
- Bipolar and unipolar stepper motor control.
- Use with dual bridge drivers, quad Darlington arrays, or discrete power devices.
- Industrial automation and robotics.
- Medical devices and equipment.
- Consumer electronics requiring precise motor control.
Q & A
- What is the primary function of the L297D013TR?
The L297D013TR generates four-phase drive signals for two-phase bipolar and four-phase unipolar step motors in microcomputer-controlled applications.
- What are the supported drive modes of the L297D013TR?
The L297D013TR supports normal drive, wave drive, and half-step modes.
- How does the L297D013TR control the direction of motor rotation?
The direction is controlled by the CW/CCW (clockwise/counterclockwise) direction control input.
- What is the purpose of the RESET input on the L297D013TR?
The RESET input restores the translator to the home position (state 1, ABCD = 0101) when an active low pulse is applied.
- How is the peak load current programmed in the L297D013TR?
The peak load current is programmed by a voltage divider on the Vref input.
- What types of packages are available for the L297D013TR?
The L297D013TR is available in SO20 packaging.
- What is the operating temperature range of the L297D013TR?
The operating temperature range is from -40°C to +150°C.
- Can the L297D013TR be used with discrete transistors and Darlington arrays?
Yes, the L297D013TR can be used with discrete transistors and Darlington arrays in addition to monolithic bridge drives.
- How does the L297D013TR regulate the current in the motor windings?
The L297D013TR uses on-chip PWM chopper circuits for switch-mode control of the current in the windings.
- What is the purpose of the SYNC output on the L297D013TR?
The SYNC output is used to synchronize the chopper oscillators in multiple L297 configurations.
