LB1847 - ON Semiconductor

The pictures are for reference only, and the specific specifications can be found in the product manual.

Part No

LB1847
Manufacturer

ON Semiconductor
ChipWorker Part#

CW1019916815
Description

PWM Current Control Type Stepper Motor Driver
Documentation

Datasheet

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LB1847 Specifications

Attribute	Attribute Value

Part Number	LB1847
Manufacturer	ON Semiconductor
ChipWorker Part#	CW1019916815
Documentation	Datasheet
Case/Package	DIP
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Product Lifecycle Status	Obsolete

Product Description

The LB1847 is a driver IC for stepper motors with PWM current control bipolar drive (fixed OFF time). A special feature of this IC is that VREF voltage is constant while the current can be set in 15 steps, allowing drive of motors ranging from 1-2 phase exciter types to 4W 1-2 phase exceiter types. The current decay pattern can also be selected (SLOW DECAY, FAST DECAY, MIX DECAY) to increase the decay of regenerative current at chopping OFF, thereby improving response characteristics. This is expecially useful for carriage and paper feed stepping motors in pricinters and similar applications where high-precision control and low vibrations are required.
Features
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PWM current control (fixed OFF time)
Load current digital selector
Selectable current decay pattern
Simultaneous ON prevention function
Noise canceller
built-in thermal shutdown circuit
built-in logic low-voltage OFF circuit

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