lb1939t Sanyo Semiconductor Corporation, lb1939t Datasheet

lb1939t

Manufacturer Part Number

lb1939t

Description

2 Channel H Bridge Constant Voltage/ Constant Current Driver Ic

Manufacturer

Sanyo Semiconductor Corporation

Datasheet

1.LB1939T.pdf (7 pages)

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Download datasheet (65Kb)

Ordering number : ENN6194

Overview

The LB1939T is a two-phase excitation bipolar stepping

motor driver that features low voltage operation, a low

saturation voltage, and low power consumption. It

supports constant voltage and constant current drive, can

control two iris motors, and is optimal for shutter, iris, and

AF drive in 3 V battery operated still digital cameras and

other battery operated equipment.

Features

• Low-voltage drive

• Low saturation voltage output: Vosat = 0.3 V at I

• Supports constant voltage and constant current drive

• Built-in reference voltage circuit (Vref = 0.9 V)

• Miniature, thin form package (Thickness t = 1.1 mm)

Specifications

Absolute Maximum Ratings at Ta = 25°C

Note: Circuit board: 114.3

Maximum supply voltage

Applied output voltage

Maximum output current: OUT1, 2, 3, and 4

Applied input voltage

Allowable power dissipation

Operating temperature

Storage temperature

— Dual power supply operation: VS = 1.6 to 7.5 V,

— Single power supply operation: VS = V

200 mA

7.5 V

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

= 1.9 to 6.5 V

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.

Parameter

SANYO Electric Co.,Ltd. Semiconductor Company

76.1

1.6 mm

glass epoxy board

Symbol

Pdmax

Topr

Omax

Tstg

Bmax

OUT

VS1, VS2, V

OUT1, 2, 3, 4

t ≤ 10 ms

ENA, IN, VC

When mounted on a printed circuit board*

= 1.9 to

2 Channel H Bridge Constant Voltage/

Package Dimensions

unit: mm

3246-TSSOP20

Conditions

(0.33)

0.65

Constant Current Driver IC

6.5

[LB1939T]

0.22

22704TN (OT) No. 6194-1/7

–0.3 to +10.5

Monolithic Digital IC

–55 to +150

–20 to +85

Ratings

LB1939T

SANYO: TSSOP20

10.5

400

0.8

0.15

Unit

°C

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