Low-saturation, current-controlled

bidirectional motor driver

Overview

The LB1843V is a low-saturation bidirectional motor driver

with output current limitation and detection functions. This

design is ideal for controlling the loading motor in a video

camera.

Features

.

Output current limiter and detector built in

.

Low-saturation voltage bidirectional bridge circuit built in:

.

Practically no current drain (0.1 µA or less) in standby mode

.

Input-linked reference voltage built in

.

Thermal shutdown circuit built in

.

Requires little space, since few external components are

needed and the IC is contained in a small SSOP-20 package

Package Dimensions

unit : mm

3179A-SSOP20

[LB1843V]

SANYO : SSOP20

Specifications

Absolute Maximum Ratings at Ta = 25°C

Parameter

Symbol

Conditions

Ratings

Unit

Maximum supply voltage

10.5

V

Maximum output current

Im max

800

mA

Applied input voltage

–0.3 to +10

V

Allowable power dissipation

Pd max

With board ( 50

800

mW

Operating temperature

Topr

–20 to +80

°C

Storage temperature

Tstg

–40 to +150

°C

Allowable Operating Ranges at Ta = 25°C

Parameter

Symbol

Conditions

Ratings

Unit

Supply voltage

3.0 to 9.0

V

V

High-level input voltage

3.0 to 9.0

V

Low-level input voltage

–0.3 to +0.7

V

LIR input voltage

V

Output current limitation

50 to 350

mA

Ordering number: EN 4385B

Monolithic Digital IC

LB1843V

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

O3096HA(II) No.4385-1/6