3-Phase Brushless Motor Driver
Ordering number: EN5634
Monolithic Digital IC
LB1895, 1895D 3-Phase Brushless Motor Driver for CD-ROM Spindle Motors
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Description
Ordering number: EN5634
Monolithic Digital IC
LB1895, 1895D 3-Phase Brushless Motor Driver for CD-ROM Spindle Motors
Overview
The LB1895 and LB1895D are 3-phase brushless motor drivers for use in CD-ROM spindle motors.
Package Dimensions
unit : mm
3222-HSOP28
[LB1895]
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 VCC = 5 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 VCC = 5 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
28
15
5.6
1.0 0.2 0.1
1 0.8 2.7 0.3
14
15.2
0.8
SANYO : HSOP28
unit : mm
3196-DIP30SD
[LB1895D]
SANYO : DIP30SD
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
4097HA(II) No.5634-1/12
1.8max
0.5
7.6
LB1895, 1895D
Specifications
Maximum Ratings at Ta = 25 °C
Parameter Maximum supply voltage 1 Maximum supply voltage 2 Maximum supply voltage 3 Applied output voltage Applied input voltage Output current Allo...
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