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Product Detailed Parameters
- Description：IC MTR DRV UNIPOLAR 3-5.5V 23ZIP
- Series：-
- Mfr：Sanken Electric USA Inc.
- Package：Tube
- Motor Type - Stepper：Unipolar
- Motor Type - AC, DC：-
- Function：Driver - Fully Integrated, Control and Power Stage
- Output Configuration：Low Side (4)
- Interface：Parallel
- Technology：Power MOSFET
- Step Resolution：1, 1/2, 1/4, 1/8, 1/16
- Applications：General Purpose
- Current - Output：3A
- Voltage - Supply：3V ~ 5.5V
- Voltage - Load：10V ~ 44V
- Operating Temperature：-20°C ~ 150°C (TJ)
- Mounting Type：Through Hole
- Package / Case：23-ESIP Formed Leads
- Supplier Device Package：23-ZIP (SLA)
- Grade：-
- Qualification：-
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Overview
The SLA7078MR is a two-phase unipolar stepper motor driver integrating low-power CMOS logic with high-current power FET outputs. It provides complete control for two-phase motors, featuring internal fixed off-time and pulse-width modulation (PWM) current control. The device supports full, half, quarter, eighth, and sixteenth-step operation via external selection. NMOS outputs sink up to 3 A and withstand 46 V in the off state. Logic supply voltage ranges from 3 V to 5.5 V, while motor supply voltage reaches 44 V max.
Feature Summary
- Integrates CMOS sequencing logic with high-voltage/high-current power FET outputs
- Supports multiple step modes including full, half, quarter, eighth, and sixteenth steps
- Features internal fixed off-time and PWM current control without complex interfaces
- Includes clamp diodes for inductive transient protection
Applications
- Printers
- Office Automation Equipment
- Personal Computer Peripherals
Procurement Notes
Verify the specific suffix (e.g., PRT, R) against the required package type, as variations exist within the series. Confirm that the application environment does not exceed the 46 V maximum off-state voltage or the 3 A continuous sink current rating. Ensure the logic level compatibility matches the system's microcontroller output voltages, noting that TTL inputs may require pull-up resistors.
Selection Notes
Select this component when a built-in sequencer is needed to reduce microcontroller load. It is suitable for applications requiring micro-stepping capabilities down to 1/16th steps. Consider the thermal performance of the PMCM package if operating near the 3 A limit. Verify that the external reference resistor setting aligns with the desired peak current for the connected stepper motor.
Part Context
This part belongs to the SLA707xM family of two-phase unipolar stepper motor drivers manufactured by Sanken Electric. The series combines logic and power stages in a single module. Variants like SLA7070M through SLA7078M differ primarily in supported step resolution and current ratings. The SLA7078MR specifically offers advanced micro-stepping options compared to basic full/half-step drivers.
Replacement Considerations
SLA7078M
FAQ
What step resolutions are supported by the SLA7078MR?
The SLA7078MR 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). The maximum output current is determined by the user's selection of a reference voltage and sensing resistor.
