O1806 MS IM / D3096HA (OT) No.5505-1/9

LB1845

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

Symbol

Conditions

Ratings

Unit

Motor supply voltage

VBB max

45

V

Peak output current

IO peak

tW

≤ 20µs

1.75

A

Continuous output current

IO max

1.5

A

Logic block supply voltage

VCC

7.0

V

Logic input voltage range

VIN

-0.3 to VCC

V

Emitter output voltage

VE

1.0

V

Pd max1

Independent IC

3.0

W

Allowable power dissipation

Pd max2

With an arbitrarily large heat sink

20.0

W

Operating temperature

Topr

-20 to +85

°C

Storage temperature

Tstg

-55 to +150

°C

Ordering number : EN5505D

Monolithic Digital IC

PWM Current Controlling

Stepping Motor Driver

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.