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LB1945H PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 LB1945H
기능 Stepping Motor Driver
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LB1945H 데이터시트, 핀배열, 회로
Ordering number : EN6193B
LB1945H
Monolithic Digital IC
PWM Current Control Type
Stepping Motor Driver
http://onsemi.com
Overview
The LB1945H is a PWM current control type stepping motor driver.
Feature
PWM current control (external excitation)
Load current digital selection (1-2, W1-2, and 2 phase excitation drives possible)
Built-in upper/lower diode
Simultaneous ON prevention function (feed-through current prevention)
Built-in thermal shutdown circuit
Built-in noise canceler
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Symbol
Conditions
Maximum motor supply voltage
Output peak current
Output continuous current
Logic supply voltage
Logic input voltage range
Emitter output voltage
Allowable power dissipation
VBB max
IO peak
IO max
VCC max
VIN max
VE max
Pd max
tw 20μs
Mounted on a specified board *
Operating temperature
Topr
Storage temperature
Tstg
* Specified board: 114.3mm × 76.1mm × 1.6mm, glass epoxy board.
Ratings
30
1.0
0.8
6.0
-0.3 to VCC
1.0
1.9
-20 to +90
-55 to +150
Unit
V
A
A
V
V
V
W
°C
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Semiconductor Components Industries, LLC, 2013
June, 2013
30409 MS / 82799RM(KI) No.6193-1/7




LB1945H pdf, 반도체, 판매, 대치품
Block Diagram
LB1945H
No.6193-4/7

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LB1945H 전자부품, 판매, 대치품
Usage Notes
LB1945H
1. VREF pin
Because the VREF pin is used as reference voltage input pin for the current setting, care must be taken to prevent
noise from affecting the input.
2. GND pin
Because this IC switches large currents, the ground pattern must be designed with care. The fin on the bottom of the
package and the fins between pins 7 and 8 and 21 and 22 should be grounded. Low-impedance patterns should be used
in blocks where large currents flow, and these blocks should be separated from low-level signal blocks. In particular,
the ground of the sense resistor RE at pin E should be located close to the IC ground. Pattern layout should be
designed so that the capacitors between VCC and ground and VBB and ground are close to VCC and VBB.
ON Semiconductor and the ON logo are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC owns the rights to a number
of patents, trademarks, copyrights, trade secrets, and other intellectual property. A listing of SCILLC’s product/patent coverage may be accessed at
www.onsemi.com/site/pdf/Patent-Marking.pdf. SCILLC reserves the right to make changes without further notice to any products herein. SCILLC makes no
warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability arising out of the
application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental
damages. “Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual
performance may vary over time. All operating parameters, including “Typicals” must be validated for each customer application by customer’s technical
experts. SCILLC does not convey any license under its patent rights nor the rights of others. SCILLC products are not designed, intended, or authorized for use
as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in
which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should Buyer purchase or use SCILLC products for
any such unintended or unauthorized application, Buyer shall indemnify and hold SCILLC and its officers, employees, subsidiaries, affiliates, and distributors
harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or
death associated with such unintended or unauthorized use, even if such claim alleges that SCILLC was negligent regarding the design or manufacture of the
part. SCILLC is an Equal Opportunity/Affirmative Action Employer. This literature is subject to all applicable copyright laws and is not for resale in any manner.
PS No.6193-7/7

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