LB1980H_07 SANYO [Sanyo Semicon Device], LB1980H_07 Datasheet - Page 6

• Manufacturer Part Number: LB1980H_07
• Description: For VCR Capstan Motors 3-Phase Brushless Motor Driver
• Manufacturer: SANYO [Sanyo Semicon Device]

Continued from preceding page.
Truth Table and Control Functions
Note: Since the drive technique adopted is a 180° technique, phases other than the sink and source phase do not turn off.
Control Function and Current Limiter Function
Pin No.
11
12
13
15
16
17
18
19
20
21
1
2
3
4
5
6
0
Pin Name
CTLREF
Phase V → Phase W
Phase W → Phase V
Phase U → Phase W
Phase W → Phase U
Phase W → Phase V
Phase V → Phase W
Phase W → Phase U
Phase U → Phase W
Phase U → Phase V
Phase V → Phase U
Phase V → Phase U
Phase U → Phase V
W IN +
U IN +
V IN +
W IN -
U IN -
V IN -
V CC
CTL
LIM
Source → Sink
1
Gm1=0.58A / V typ
2.10V typ
Speed control input. The control implemented is fixed
current drive controlled by current feedback from Rf.
Gm=0.58 / V (typical) when Rf=0.5W
Control reference voltage. While this pin is set to about
0.43×V CC internally, this voltage can be modified by
applying a voltage from a low-impedance circuit.
(The input impedance is about 4.3kΩ).
Current limiter function control. The output current can be
varied linearly by applying a voltage to this pin.
The slope is 0.5A / V (typical) when Rf=0.5Ω.
U phase Hall element inputs.
Logic high is defined as states where IN + >IN - .
V phase Hall element inputs.
Logic high is defined as states where IN + >IN - .
W phase Hall element inputs.
Logic high is defined as states where IN + >IN - .
Power supply for all internal blocks other than the output
block. This voltage must be stabilized so that noise and
ripple do not enter the IC.
Control Characteristics
2
U
H
H
H
L
L
L
V CTL
3
Hall input
V
H
H
H
L
L
L
Function
4
W
V LIM =5V
CTLREF: OPEN
H
H
H
L
L
L
FR
H
H
H
H
H
H
L
L
L
L
L
L
5
LB1980H
Note: In the FR column, “H” refers to a voltage of
Note: In the Hall input column, “H” refers to the state
2.75V or higher, and “L” refers to 2.25V or
lower (when VCC=5V.)
in the corresponding phase where the +input is
at a potential at least 0.01V higher than the
-input, and “L” refers to the state where the
-input is at a potential at least 0.01V higher than
the +input.
0
CTL
11
200mA / V typ
(+) input
15
17
19
200Ω
1
Control Limiter Characteristics
200Ω
V CC
100µA
2
Equivalent circuit
Slope: 0.50A / V typ
7.5kΩ
200Ω
V LIM
100µA
3
V CC
10kΩ
12
CTLREF
4
V CTL =5V
CTLREF: OPEN
200Ω
LIM
13
200Ω
200µA
No.5974-6/7
(--) input
max
V CC
16
18
20