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LB1991V Datasheet(PDF) 4 Page - Sanyo Semicon Device

No. de pieza LB1991V
Descripción Electrónicos  Three-Phase Brushless Motor Driver for Portable VCR Capstan Motors
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Fabricante Electrónico  SANYO [Sanyo Semicon Device]
Página de inicio  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LB1991V Datasheet(HTML) 4 Page - Sanyo Semicon Device

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Pin No.
Pin
Equivalent circuit
Pin function
Supply voltage for all circuits other than the IC internal output block and
the amplitude control block.
VCC1
1
No. 5792-4/7
LB1991V
Pin Functions
Supply voltage for the IC internal output control block and the
amplitude control block.
VCC2
2
Motor drive power supply. The voltage applied to this pin must not
exceed VCC2.
VS
3
U phase output
V phase output (These outputs include built-in spark killer diodes.)
W phase output
UOUT
VOUT
WOUT
5
7
9
Ground for the output power transistors
Rf
6, 8
Hall element bias voltage supply
A voltage that is typically 0.95 V is generated between the VH+ and
VH– pins. (When IH is 5 mA.)
VH+
VH–
10
11
Ground for circuits other than the output transistor
The Rf pin potential is the lowest output transistor potential.
GND
13
Forward/reverse selection. Applications can select motor forward or
reverse direction rotation using this pin. (This pin has hysteresis
characteristics.)
FRC
14
U phase Hall element input
The logic high level is the state where the IN+ voltage is greater than
the IN- voltage.
V phase Hall element input
The logic high level is the state where the IN+ voltage is greater than
the IN- voltage.
W phase Hall element input
The logic high level is the state where the IN+ voltage is greater than
the IN- voltage.
UIN1
UIN2
VIN1
VIN2
WIN1
WIN2
16
17
18
19
20
21
Selects the bias supply for all circuits other than the FG comparators.
The bias supply is cut when this pin is set to the low level.
STBY
15
Hall input/output gain control. The gain is controlled by the resistor
connected between this pin and ground.
ANGLE
12
FG comparator noninverting inputs. There is no internally applied bias.
FGIN+
22
FG comparator inverting inputs. There is no internally applied bias.
FGIN
23
FG comparator outputs. There is an internal 20-k
Ω resistor load.
FGOUT
24


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