LB1945H データシートの表示（PDF） - ON Semiconductor
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LB1945H Datasheet PDF : 7 Pages
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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
Unit
30
V
1.0
A
0.8
A
6.0
V
-0.3 to VCC
V
1.0
V
1.9
W
-20 to +90
°C
-55 to +150
°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
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