SANYO LB1674V Datasheet

Ordering number: EN4392A

Monolithic Digital IC

LB1674V

Brushless, Sensorless Motor Driver

Overview

The LB1674V is a small motor driver ideal for mini-cassettes,
headphone stereos and micro-cassettes.

Functions and Features

c 3-phase unipolar, brushless, sensorless motor driver
c Reverse function
c Built-in speed control function (V servo)
c Built-in reference voltage (0.5 V)
c Soft switching driver

Specifications

Package Dimensions

unit : mm

3175A-SSOP24

[LB1674V]

SANYO : SSOP24

Absolute Maximum Ratings at Ta = 25°C

Parameter Symbol Conditions Ratings Unit
Maximum supply voltage V
Output transistor withstand voltage Vsus 10 V
Maximum output current Im max 0.6 A
Allowable power dissipation Pd max Tj = 125°C 0.4 W
Operating temperature Topr 0 to + 80 °C
Storage temperature Tstg –40 to + 125 °C

max 5 V

CC

Allowable Operating Range at Ta = 25°C

Parameter Symbol Conditions Ratings Unit
Supply voltage V

CC

1.0 to 3.5 V

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

83096HA(II)/90793TS No.4392-1/6

LB1674V

Electrical Characteristics at Ta = 25°C, VCC= 1.5 V, unless otherwise noted

Parameter Symbol Conditions min typ max Unit
Supply current I
Reference voltage Vref 0.47 0.50 0.53 V
Reference-voltage characteristic
Reference-voltage load

characteristics
Reference-voltage temperature

characteristics
Speed signal detection accuracy Vsp V

Speed signal interphase error –5 +5 %
Speed-signal voltage

characteristics
Speed-signal temperature

characteristics
Current detection accuracy V

Current detection ratio K
Starting pulse period T
COM* lead-in current I
Output saturation voltage Vsat V
Logic input high-level voltage V
Logic input low-level voltage V
TC pin lead-in current I

∆Vref

Vref

∆Vref

Vref

∆Vsp

Vsp

∆Vsp

Vsp

CC

/ ∆V

∆Vref

∆Iref

/ ∆Ta

/ ∆V

/ ∆Ta

RI

COM

TC

START pin: high 6.5 10 mA
START pin: low 0 10 µA

CCVCC

CCVCC

I

S

* 25 35 45 µA

H
L

= 1.0 to 3.5 V 1 1.5 %/V

Iref=0to–50µA –0.2 –0.06 mV/µA

Ta=0to80°C 0.01 %/°C

= 750 mV 140 155 170 mV

IN

= 1.0 to 3.5 V 2 3 %/V

= 0.75 V, Ta=0to80°C 0.05 %/°C

V

IN

VIN1 = 0.3 V, VIN2 = 1.0 V, RI = 330 Ω 70 85 100 mV
VIN1 = 0.3 V, VIN2=1to1.3V 0.17 0.22 0.27
CS= 0.1 µF 32 ms

= 1.0 V, Im = 0.3 A 0.15 0.25 V

CC

0.9 V

0.3 V

35 50 65 µA

Pin Assignment

Pd max – Ta

Allowable power dissipation, Pd max – W

Ambient temperature, Ta – °C

Top view

No.4392-2/6