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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
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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
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customer shall be solely responsible for the use.
30409 MS / 82799RM(KI) No.6193-1/7
LB1945H
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
Ratings
Unit
Maximum motor supply voltage
VBB max
30
V
Output peak current
IO peak
tw ≤ 20s
1.0
A
Output continuous current
IO max
0.8
A
Logic supply voltage
VCC max
6.0
V
Logic input voltage range
VIN max
-0.3 to VCC
V
Emitter output voltage
VE max
1.0
V
Allowable power dissipation
Pd max
Mounted on a specified board *
1.9
W
Operating temperature
Topr
-20 to +90
°C
Storage temperature
Tstg
-55 to +150
°C
* Specified board: 114.3mm
× 76.1mm × 1.6mm, glass epoxy board.
Monolithic Digital IC
PWM Current Control Type
Stepping Motor Driver
Ordering number : EN6193B
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