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LB1847 Arkusz danych(PDF) 1 Page - Sanyo Semicon Device

Numer części LB1847
Szczegółowy opis  PWM Current Control Type Stepping Motor Driver
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Producent  SANYO [Sanyo Semicon Device]
Strona internetowa  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LB1847 Arkusz danych(HTML) 1 Page - Sanyo Semicon Device

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Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer
's products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer
'sproductsor
equipment.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be
intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace
instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety
equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case
of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee
thereof. If you should intend to use our products for applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our
customer shall be solely responsible for the use.
21809 MS / 11499RM(KI) No.5982-1/15
LB1847
Overview
The LB1847 is a driver IC for stepping 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 exciter 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 especially useful for carriage and paper feed stepping motors in printers and similar applications
where high-precision control and low vibrations are required.
Features
• PWM current control (fixed OFF time)
• Load current digital selector (1-2, W1-2, 2W1-2, 4W1-2 phase exciter drive possible)
• Selectable current decay pattern (SLOW DECAY, FAST DECAY, MIX DECAY)
• Simultaneous ON prevention function (feed-through current prevention)
• Noise canceler
• Built-in thermal shutdown circuit
• Built-in logic low-voltage OFF circuit
Specifications
Absolute Maximum Ratings at Ta = 25
°C
Parameter
Symbol
Conditions
Ratings
Unit
Motor supply voltage
VBB
50
V
Output peek current
IO peak
tW = 20µs
1.75
A
Output continuous current
IO max
1.5
A
Logic supply voltage
VCC
7.0
A
Logic input voltage range
VIN
-0.3 to VCC
V
Emitter output voltage
VE
1.0
V
Independent IC
3.0
W
Allowable power dissipation
Pd max
With infinitely large heat sink
20
W
Operating temperature
Topr
-20 to +85
°C
Storage temperature
Tstg
-55 to +150
°C
Monolithic Digital IC
PWM Current Control Type
Stepping Motor Driver
Ordering number : EN5982A
http://semicon.sanyo.com/en/network


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