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PDF LB1980H Data sheet ( Hoja de datos )

Número de pieza LB1980H
Descripción Three-Phase Brushless Motor Driver for VCR Capstan Motors
Fabricantes Sanyo 
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Ordering number : EN5974
Monolithic Digital IC
LB1980H
Three-Phase Brushless Motor Driver
for VCR Capstan Motors
Overview
The LB1980H is a 3-phase brushless motor driver that is
particularly appropriate for VCR capstan motor drivers.
Functions
· 3-phase full-wave drive
· Built-in torque ripple correction circuit (variable
correction ratio)
· Current limiter circuit
· Upper and lower side output stage over-saturation
prevention circuit that does not require external
capacitors.
· FG amplifier
· Thermal shutdown circuit
Package Dimensions
unit: mm
3233-HSOP28H
[LB1980H]
SANYO: HSOP28H
Independent IC
Ambient temperature, Ta — °C
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.
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
O3098RM (OT) No. 5974-1/8

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LB1980H pdf
LB1980H
Continued from preceeding page.
Pin No.
Pin
Function
Speed control input. The control implemented is fixed current
11 CTL drive controlled by current feedback from Rf.
Gm = 0.58/V (typical) when Rf = 0.5
Control reference voltage. While this pin is set to about
12
CTLREF
0.43 × VCC internally, this voltage can be modified by
applying a voltage from a low-impedance circuit.
(The input impedance is about 4.3 k).
Current limiter function control. The output current can be
13 LIM varied linearly by applying a voltage to this pin.
The slope is 0.5 A/V (typical) when Rf = 0.5 .
15
UIN+
U phase Hall element inputs.
16
UIN
Logic high is defined as states where IN+ > IN.
17
VIN+
V phase Hall element inputs.
18
VIN
Logic high is defined as states where IN+ > IN.
19
WIN+
W phase Hall element inputs.
20
WIN
Logic high is defined as states where IN+ > IN.
Power supply for all internal blocks other than the output
21 VCC block. This voltage must be stabilized so that noise and ripple
do not enter the IC.
Pin Assignment
Equivalent circuit
No. 5974-5/8

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