lb11947 Sanyo Semiconductor Corporation, lb11947 Datasheet

lb11947

Manufacturer Part Number

lb11947

Description

Pwm Current Control Type Dc Motor Driver + Switching Regulator

Manufacturer

Sanyo Semiconductor Corporation

Datasheet

1.LB11947.pdf (14 pages)

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Download datasheet (343Kb)

Ordering number : ENN7318

Overview

The LB11947 is a PWM current control DC motor driver

with 5-V switching regulator. This IC can simultaneously

drive two DC motors. It is especially suitable for the

applications of DC motors that control motor speed with

direct PWM technique using external control signals.

Functions

(DC motor drive)

• Driving two DC motors

• External PWM control function

• Internal PWM current control (OFF time fixed)

• Current decay switching function (SLOW DECAY and

• Noise canceling function

• Output Tr upper diode incorporated (with external lower

• Thermal shutdown circuit incorporated (with a heat

• Logic low-voltage OFF circuit incorporated

(Switching regulator)

• PWM oscillation frequency variable (external C

• Soft start function (external C necessary)

• Over-current protection function

FAST DECAY modes)

side Schottky diode)

generation warning function)

necessary)

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

Any and all SANYO 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 representative nearest you before using

any SANYO products described or contained herein in such applications.

SANYO 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 products described or contained

herein.

SANYO Electric Co.,Ltd. Semiconductor Company

PWM Current Control DC Motor Driver/

Package Dimensions

unit: mm

3147C-DIP28H

(1.81)

R1.7

1.78

5 V Switching Regulator

20.0

26.75

0.6

[LB11947]

1.0

SANYO: DIP28H (500 mil)

20203AS (OT) No. 7318 -1/14

Monolithic Digital IC

LB11947

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