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Product Detailed Parameters
- Description：IC MOTOR DRIVER SMD
- Series：-
- Mfr：Sanken Electric USA Inc.
- Package：Tube
- Motor Type - Stepper：-
- Motor Type - AC, DC：-
- Function：-
- Output Configuration：-
- Interface：-
- Technology：-
- Step Resolution：-
- Applications：-
- Current - Output：-
- Voltage - Supply：-
- Voltage - Load：-
- Operating Temperature：-
- Mounting Type：-
- Package / Case：-
- Supplier Device Package：-
- Grade：-
- Qualification：-
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Overview
The SLA7078MWB is a two-phase unipolar stepper motor driver from the Sanken SLA707xM series. It integrates low-power CMOS logic with high-current, high-voltage power FET outputs to provide complete control and drive for stepper motors. The device features internal fixed off-time and pulse-width modulation (PWM) control of output current within a Power Multi-Chip Module (PMCM). It supports full, half, quarter, eighth, and sixteenth-step operation externally selectable. The NMOS outputs can sink up to 3 A and withstand 46 V in the off state. Logic supply voltage ranges from 3V to 5.5V, while load supply voltage is 10V to 44V.
Feature Summary
- Integrates CMOS sequencing logic with high-current power FET outputs for direct stepper motor control without complex interfaces.
- Provides internal fixed off-time and PWM current control to manage output current via user-selected reference voltage and sensing resistor.
- Supports multiple step resolutions including full, half, quarter, eighth, and sixteenth-step modes through external selection.
Applications
- Personal printers
- Office automation equipment
- Peripheral component interconnect (PCI) applications
Procurement Notes
Verify the specific suffix 'WB' against official Sanken Electric datasheets or ordering guides to confirm package type and tape/reel specifications. Ensure the selected variant matches the required thermal performance and pinout configuration for the target PCB design. Cross-reference with authorized distributors to confirm availability and authenticity of the component.
Selection Notes
Select this driver for applications requiring integrated sequencing and driving capabilities for two-phase unipolar stepper motors. Consider the 3 A output capability and 46 V blocking voltage when sizing for motor loads. Evaluate the need for microstepping resolution support if higher precision positioning is required compared to standard full or half-step drivers.
Part Context
The SLA7078MWB belongs to the SLA707xM family of two-phase unipolar stepper motor drivers manufactured by Sanken Electric. This series combines logic and power stages in a single module to simplify system design. The SLA7078 variant specifically supports advanced microstepping options, distinguishing it from lower-resolution counterparts in the same product line.
FAQ
What step modes are supported by the SLA7078MWB?
The SLA7078MWB supports full, half, quarter, eighth, and sixteenth-step operation, which are externally selectable.
How is the output current controlled in this device?
Output current is controlled via internal pulse-width modulation (PWM) and is determined by the user's selection of a reference voltage and a sensing resistor.
