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LB11847 View Datasheet(PDF) - SANYO -> Panasonic

Part Name
Description
Manufacturer
LB11847 Datasheet PDF : 15 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
Ordering number : EN6183A
LB11847
Monolithic Digital IC
PWM Current Control Type
Stepping Motor Driver
Overview
The LB11847 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 highprecision 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 (feedthrough 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
Motor supply voltage
Output peak current
Output continuous current
Logic supply voltage
Logic input voltage range
Emitter output voltage
Symbol
VBB
IOPEAK
IO max
VCC
VIN
VE
tW 20μs
Conditions
Ratings
Unit
50
V
1.75
A
1.5
A
7.0
V
-0.3 to VCC
V
1.0
V
Continued on next page.
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.
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's products or
equipment.
90308 MS PC/61199RM(KI) No.6183-1/15
 

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