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LB1946 Datasheet(PDF) 1 Page - Sanyo Semicon Device

No. de pieza LB1946
Descripción Electrónicos  PWM Current Control Stepping Motor Driver
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Fabricante Electrónico  SANYO [Sanyo Semicon Device]
Página de inicio  https://www.sanyo-av.com/us/
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LB1946 Datasheet(HTML) 1 Page - Sanyo Semicon Device

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11707 SY IM B8-5416 No.7115-1/16
LB1946
Overview
The LB1946 is stepping motor drive IC that implements PWM current control bipolar drive with a fixed off time. This IC
features 15-current setting levels using a fixed VREF voltage and supports for microstepping drive from 1-2 phase
excitation to 4W1-2 phase excitation drive. This device is optimal for driving stepping motors such as those used for
carriage drive and paper feed in printers.
Applications
• PWM current control stepping motor drivers
Features
• PWM current control with a fixed off time
• Logic input serial-parallel converter (allows 1-2, W1-2, 2W1-2, and 4W1-2 phase excitation drive)
• Current attenuation switching function (with slow decay, fast decay, and mixed decay modes)
• Built-in upper and lower side output diodes
• Simultaneous on state prevention function (through current prevention)
• Noise canceller function
• Thermal shutdown circuit
• Shutoff on low logic system voltage circuit
• Low-power mode control pin
Specifications
Absolute Maximum Ratings at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Motor supply voltage
VBB
50
V
Peak output current
IO PEAK
tw
≤20µs
1.75
A
Maximum continuous output current
IO max
1.5
A
Logic system supply voltage
VCC
7.0
V
Logic input voltage range
VIN
-0.3 to VCC
V
Emitter output voltage
VE
1.0
V
Operating temperature
Topr
-20 to +85
°C
Storage temperature
Tstg
-55 to +150
°C
Allowable power dissipation (IC internal)
Pd max
Ta=25
°C, independent IC
3.0
W
Ordering number : EN7115
Monolithic Digital IC
PWM Current Control Stepping Motor Driver
Any and all SANYO Semiconductor products described or contained herein do not have specifications
that can handle applications that require extremely high levels of reliability, such as life-support systems,
aircraft's control systems, or other applications whose failure can be reasonably expected to result in
serious physical and/or material damage. Consult with your SANYO Semiconductor representative
nearest you before using any SANYO Semiconductor products described or contained herein in such
applications.
SANYO Semiconductor assumes no responsibility for equipment failures that result from using products
at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor
products described or contained herein.


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