LB1845_12 Datasheet, PDF (1/9 Pages) Sanyo Semicon Device – PWM Current Controlling Stepping Motor Driver

Ordering number : EN5505D
Monolithic Digital IC
LB1845 ^{PWM Current Controlling}
Stepping Motor Driver
Overview
The LB1845 is a PWM current control type stepping motor driver that uses a bipolar drive scheme. It is particularly
suitable for driving carriage and paper feed stepping motors in printers and similar products.
Features
• PWM current control (fixed off time scheme)
• Digital load current selection function
• Sustained output voltage: 45V
• Built-in thermal shutdown circuit
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Motor supply voltage
Peak output current
Continuous output current
Logic block supply voltage
Logic input voltage range
Emitter output voltage
Allowable power dissipation
Operating temperature
Storage temperature
Symbol
VBB max
IO peak
IO max
VCC
VIN
VE
Pd max1
Pd max2
Topr
Tstg
Conditions
tW ≤ 20µs
Independent IC
With an arbitrarily large heat sink
Ratings
Unit
45
V
1.75
A
1.5
A
7.0
V
-0.3 to VCC
V
1.0
V
3.0
W
20.0
W
-20 to +85
°C
-55 to +150
°C
Any and all SANYO Semiconductor products described or contained herein do not have specifications
that can handle applications that require extremely high levels of reliability, such as life-support systems,
aircraft's control systems, or other applications whose failure can be reasonably expected to result in
serious physical and/or material damage. Consult with your SANYO Semiconductor representative
nearest you before usingany SANYO Semiconductor products described or contained herein in such
applications.
SANYO Semiconductor assumes no responsibility for equipment failures that result from using products
at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition
ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor
products described or contained herein.
O1806 MS IM / D3096HA (OT) No.5505-1/9