LB1991V_09 SANYO [Sanyo Semicon Device], LB1991V_09 Datasheet - Page 5

• Manufacturer Part Number: LB1991V_09
• Description: For Fan Motor 3-phase Brushless Motor Driver
• Manufacturer: SANYO [Sanyo Semicon Device]

Pin Function
Pin No.
6,8
10
11
13
14
15
16
17
18
19
20
21
12
22
23
24
1
2
3
5
7
9
V CC 1
V CC 2
V S
U OUT
V OUT
W OUT
RF
VH +
VH −
GND
FRC
STBY
U IN 1
U IN 2
V IN 1
V IN 2
W IN 1
W IN 2
ANGLE
FG IN +
FG IN −
FG OUT
Pin name
Supply voltage for all circuits other than the IC internal
output block and the amplitude control block.
Supply voltage for the IC internal output control block and
the amplitude control block.
Motor drive power supply. The voltage applied to this pin
must not exceed V CC 2.
U phase output.
V phase output.
W phase output.
Ground for the output power transistors.
Hall element bias voltage supply.
A voltage that is typically 0.95V is generated between the
VH + and VH − pins (When I H is 5mA).
Ground for circuits other than the output transistor.
The RF pin potential is the lowest output transistor potential.
Forward/reverse selection. Applications can select motor
forward or reverse direction rotation using this pin. (This pin
has hysteresis characteristics.)
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.
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.
Hall input/output gain control. The gain is controlled by the
resistor connected between this pin and ground.
FG comparator non-inverting inputs.
There is no internally applied bias.
FG comparator inverting inputs.
There is no internally applied bias.
FG comparator outputs.
There is an internal 20kΩ resistor load.
(These outputs include built-in spark killer diodes.)
Pin function
LB1991V
FG IN
1.2V typ
About
ANGLE
1.9V
23
FRC
V CC 1
14
1/2 V S
1/4 V S
5k
200
17
20k
50k
V CC 1
10k
5k
4k
0.3V
Equivalent circuit
VH +
10
200
About
400
0.9V
400
FG IN +
4k
22
STBY
V CC 1
15
200
200
100k
(7,9)
(8)
2
3
5
6
V CC 2
V S
Each
OUT
RF
(18,20)
(19,21)
16
17
No.5792-5/7
1
11
1 V CC 1
FG OUTN
V CC 1
24
V CC 1
Each
input of 1
Each
input of 2
1
VH