LB1945D_09 Datasheet, PDF (1/9 Pages) Sanyo Semicon Device – PWM Current Control Stepping Motor Driver

Ordering number : EN7633A
LB1945D
Monolithic Digital IC
PWM Current Control
Stepping Motor Driver
Overview
The LB1945D is a PWM current control stepping motor driver that uses a bipolar drive technique. It is optimal for use with
the carriage and paper feed stepping motors used in printers.
Functions and Features
• PWM current control (external clock)
• Digital load current selection function (supports 1-2, W1-2, and 2-phase excitation)
• Built-in high and low side diodes
• Simultaneous on state prevention function (through-current prevention)
• Built-in thermal shutdown circuit
• Noise canceling function
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Motor supply voltage
Output peak current
Output continuous current
Logic system supply voltage
Logic input voltage range
Emitter output voltage range
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VBB max
IO peak
IO max
VCC max
VIN
VE
Pd max
Topr
Tstg
tW ≤ 20μs
Independent IC
Conditions
Ratings
Unit
30
V
1.0
A
0.8
A
6.0
V
-0.3 to VCC
V
1.0
V
2.8
W
-20 to +90
°C
-55 to +150
°C
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.
41107 TI PC B8-6489, 6394 No.7633-1/9