LB1945D Datasheet, PDF (1/9 Pages) Sanyo Semicon Device – Stepping Motor Driver

Ordering number : EN7633A
LB1945D
Monolithic Digital IC
PWM Current Control
Stepping Motor Driver
http://onsemi.com
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
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
41107 TI PC B8-6489, 6394 No.7633-1/9