ROHM BA6852FP Datasheet
Motor driver ICs
Spindle and loading motor driver for PD
BA6852FP
The BA6852FP is a motor driver IC developed for use in PD, CD-ROM and DVD applications. In addition to having a
conventional spindle motor driver, it includes a reversible motor driver for use with loading motors to allow easy system
construction.
Applications
PD, CD-ROM and DVD.
Features
1) Power save circuit (three-level switch) allows FG output in power save mode.
2) FGSW allows selection between either three-phase
composite output or single-phase output for the FG
output.
Absolute maximum ratings (Ta = 25C)
3) The output voltage for the loading motor driver can be
set using the Vref pin.
Recommended operating conditions (Ta = 25C)
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Motor driver ICs BA6852FP
Block diagram
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Motor driver ICs BA6852FP
Pin descriptions
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Motor driver ICs BA6852FP
Electrical characteristics (unless otherwise noted, Ta = 25C, VCC = 5V, VM1 = 12V, and VM2 = 12V)
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Motor driver ICs BA6852FP
Measurement circuits
(1) Measurement circuit resistance
(2) Input/output table
Note: Forward E
Reverse EC > ECR
C < ECR
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Input voltage H = 2.6V
M = 2.5V
L = 2.4V
Motor driver ICs BA6852FP
(3) Measurement circuits
ICC1 : Ammeter A1 value
IPS1 = 150µA
H
1
, H2, H3 = VCC / 2 (V)
1
, H2, H3 = VCC /2 0.1 (V)
H
CC2 : Ammeter A1 value
I
PS = OPEN
1
, H2, H3 = VCC / 2 (V)
H
H
1
, H2, H3 = VCC /2 0.1 (V)
CC3 : Ammeter A1 value
I
IPS3 = 150µA
1
, H2, H3 = VCC / 2 (V)
H
1
, H2, H3 = VCC /2 0.1 (V)
H
I
PSON
IPS range for which all output pins
:
are open
(input conditions 1 to 6)
PSOP
IPS range for only FG and the hall
I
:
bias operate
(input conditions 1 to 6)
I
PSOFF
PS range for which the output pins
:
are as in the Input / output table
(input conditions 1 to 6)
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