LB1895D Sanyo, LB1895D Datasheet

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LB1895D

Manufacturer Part Number
LB1895D
Description
3-Phase Brushless Motor Driver for CD-ROM Spindle Motors
Manufacturer
Sanyo
Datasheet
Ordering number: EN5634
Overview
The LB1895 and LB1895D are 3-phase brushless motor drivers
for use in CD-ROM spindle motors.
Functions and Features
.
.
.
.
.
.
.
.
.
Current linear drive
V-type control amplifier built in
Because the power supply for the bias circuit on the upper
output side is separate, output with low saturation can be
attained by boosting only that power supply. (Effective when
V
Because current is detected on the upper side, there is no
voltage loss due to the RF resistance. In addition, the RF
voltage reduces the power dissipation within the IC.
(Effective when V
Start/Stop function built in
Thermal shutdown circuit built in
Overcurrent protection circuit built in
Two-channel Hall signal comparator built in.
(For detecting rotation direction and Hall FG output)
Hall device bias built in
CC
= 5 V)
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
CC
= 5 V)
3-Phase Brushless Motor Driver for
Package Dimensions
unit : mm
3222-HSOP28
unit : mm
3196-DIP30SD
1
28
CD-ROM Spindle Motors
0.8
15.2
2.7
[LB1895D]
[LB1895]
0.3
LB1895, 1895D
0.8
Monolithic Digital IC
14
15
4097HA(II) No.5634-1/12
SANYO : DIP30SD
SANYO : HSOP28
0.2

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LB1895D Summary of contents

Page 1

... Ordering number: EN5634 Overview The LB1895 and LB1895D are 3-phase brushless motor drivers for use in CD-ROM spindle motors. Functions and Features . Current linear drive . V-type control amplifier built in . Because the power supply for the bias circuit on the upper output side is separate, output with low saturation can be attained by boosting only that power supply ...

Page 2

... CC LB1895, 1895D Symbol Conditions V 1 max max max CC V max O V max I I max O Indepent IC [LB1895] Pd max Glass epoxy board (114.3 762 1.5 mm) [LB1895D] Topr Tstg Symbol Conditions Conditions Conditions Ratings Unit 7 V 14.4 V 14.4 V 14.4 ...

Page 3

Electrical Characteristics ° Parameter Symbol [Supply current] Supply current 1 I Supply current 2 I Supply current 3 I Output quiescent current Output quiescent current Output quiescent current ...

Page 4

... U phase U phase 6 W phase Inputs H: For each phase input 2, phase input higher electric potential of 0 more. L: For each phase input 2, phase input lower electric potential of 0 more. LB1895, 1895D Pd max – Ta LB1895D LB1895 Ambient temperature, Ta – ° C ...

Page 5

LB1895 Pin Assignment LB1895, 1895D ...

Page 6

LB1895 Block Diagram Output control Matrix FR LB1895, 1895D No.5634-6/12 ...

Page 7

... Pin Descriptions Note: Numbers within ( ) are for LB1895D Pin No. Symbol Voltage (10 (11) V COMPO 10 (12) W COMPO 12 (13 1 – (14 (15 (16) ...

Page 8

Continued from preceding page. Pin No. Symbol Voltage 19 (20) S SIG 20 (21) GND 22 (25 (26 REF 24 (27 toV 1 ...

Page 9

LB1895 Sample Application Circuit ( 0.1µF 0.1µF LB1895 Sample Application Circuit ( 0.1µF 0.1µF Between power supply and GND, Output and GND, and between Hall inputs: The capacitors ...

Page 10

... LB1895D Sample Application Circuit (1) 0.1µ 0.1µF 0.1µF LB1895D Sample Application Circuit (2) 0.1µ 0.1µF 0.1µF Between power supply and GND, Output and GND, and between Hall inputs: The capacitors may change, depending on the motor. The capacitor between the Hall inputs in particular may not be required with some motors. ...

Page 11

LB1895,1895D — Example of using a comparator to detect the direction of rotation When REF V COMPO W COMPO When REF V COMPO W COMPO When the phasing is as shown above, the direction ...

Page 12

... Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. ...

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