ON Semiconductor Introduces High-Efficiency Stepper Motor Driver IC for Office Automation Equipment

LV8702V is optimized to reduce motor noise, vibration and heat generation, and deliver no-load power consumption savings of up to 80 percent ^*1

ON Semiconductor has introduced the LV8702V, a new stepper motor driver IC that delivers significantly improved efficiency versus existing products on the market. The device has been specifically designed for office automation equipment applications such as copiers, scanners and multi-function printers.

Features and Benefits

In addition to reducing overall power consumption, the LV8702V helps reduce heat generation, vibration and noise from the motor in applications such as positioning control in printers. Due to the increased efficiency, the surface temperature of the driver IC and the motor are decreased by up to 46 ºC and 28 ºC respectively ^*2. This can overcome the need for cooling fans with the corresponding space and cost savings and enhanced system reliability. The LV8702V stepper motor driver IC detects motor condition through driver waveform monitoring; power consumption is reduced by automatically reducing the current value according to the rotation speed or load of the motor. The new device has an operating voltage range of 9 volts (V) to 32 V. Protection features include output short protection, a thermal shutdown function and a step-out detection function.

The LV8702V joins ON Semiconductor’s AMIS30542/43/22/12 family of highly intelligent stepper motor control solutions with sensor-less motor feedback. This portfolio of product offerings provide designers with cost effective, leading edge performance for a broad range of applications and drive current. Advanced functions such as stall detection, step-loss, and current drive optimization are now simple to integrate into applications where cost may have previously precluded ‘high-end’ motor control.

Pricing and Availability

The LV8702V is offered in a SSOP44J package measuring 5.6 mm by 15.0 mm. The device is budgetary priced at $6.00 per unit for orders in quantities of 2,000 units.

^*1

• Driving voltage: 24V,
• Current setting: I_out=1A,
• Excitation mode: Half step,
• Speed: 1500pps,
• Motor: HB motor bipolar type,
• Load: no-load

^*2

• Driving voltage: 24V,
• Current setting: I_out=2A,
• Excitation mode: Half step,
• Speed: 2000pps,
• Motor: HB motor bipolar type,
• Load: no-load,
• Power on time: 20 min

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