LB11997H

No. 6231-1/8

LB11997H

Three-Phase Brushless Motor Driver

for CD-ROM Spindle Drive

Monolithic Digital IC

The LB11997H is a 3-phase brushless motor driver

especially suited for CD-ROM spindle motor drives.

Functions

• Current linear drive

• Control V type amplifier

• Separate power supply for output upper side bias

circuit allows low output saturation by boosting this

power supply only (useful for 5V power supply types).

• Upper side current detection technique reduces loss

voltage of current detection resistor. Voltage drop

caused by this resistor reduces internal power

dissipation of IC.

• Built-in short braking circuit

• Built-in reverse blocking circuit

• Hall FG output

• Built-in S/S function

• Built-in current limiter circuit (selectable, 2 steps)

• Built-in Hall power supply

• Built-in thermal shutdown circuit

• Supports 3.3V DSP

Package Dimensions

unit: mm

3234-HSOP28H-C

[LB11997H]

Overview

SANYO : HSOP28H-C

Ordering number : ENN*6231

81299RM(KI)

Preliminary

6.2

28

15

1

0.8

15.3

2.7

0.3

0.25

0.85

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

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