Overview

The LB1913 is a three-phase disk drive motor driver IC

that is optimal for use as a 3.5-inch floppy disk drive

spindle motor driver.

Functions and Features

• Three-phase full-wave linear drive

• On-chip digital speed control

• Start and stop circuits (active low)

• Speed switching

High: 300 rpm, Low: 360 rpm

• Current limiter circuit

• Index comparator circuit

• Index delay circuit

• Thermal protection circuit

Package Dimensions

unit: mm

3222-HSOP28

Monolithic Integrated IC

Ordering number : EN5503

83196HA (0T) No. 5503-1/6

SANYO: HSOP28

[LB1913]

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

FDD Spindle Motor Driver

LB1913

Parameter

Symbol

Conditions

Ratings

Unit

Maximum supply voltage

7.0

V

Maximum output current

t

≤ 0.5 s

1.0

A

Maximum steady-state output current

0.7

A

Allowable power dissipation

Pd max

Independent IC

0.5

W

Operating temperature

Topr

–20 to +80

°C

Storage temperature

Tstg

–40 to +150

°C

Parameter

Symbol

Conditions

Ratings

Unit

Recommended supply voltage

4.2 to 6.5

V

Specifications

Absolute Maximum Ratings at Ta = 25°C

Allowable Operating Ranges at Ta = 25°C