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

device, the customer should always evaluate and test devices mounted in the customer

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

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.

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 ≤ 20µs

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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