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LV8806QA-MH

P1-P3P4-P6P7-P7
LV8806QA
www.onsemi.com
4
Block Diagram
V
CC
4
UO
SENSORLESS
LOGIC
FG RD REFOSC
F/R
SWITCH
PRI
DRIVE
3
2
VO
WO
5
12
F/R
SELECTOR
CURR LIM
START
OSC
15
1
6
1416
GND TGND1 TGND2
RF
7
8
COM
COMIN
FIL
13
11
OSC
PWM
10
FG
9
RD
COM
Pd max -- Ta
0
1.0
0.2
40
8020
0
120
0.6
60
0.35
0.8
0.4
40
100
Specified board: 50 50 1.6mm
glass epoxy board single layer.
LV8806QA
www.onsemi.com
5
Pin Assignment
Pin function
Pin No. Symbol Function Equivalent circuit
1 RF Output current detection pin. Drive current is
detectable with resistors connected to GND.
2
3 4
1
5
2
3
4
WO
VO
UO
Output pin.
Connected to motor coil.
5 V
CC
IC power supply pin and motor power supply pin.
A capacitor is connected between GND and this
pin.
6 COM Connected to the midpoint of the motor.
6
7
8
UO VO WO
7 COMIN Motor position detection comparator filter pin.
A capacitor is connected between FIL (PIN8) and
this pin.
8 FIL Motor position detection comparator filter pin.
A capacitor is connected between COMIN (PIN7)
and this pin.
9 RD Motor lock detection output pin.
Outputs High when motor is locked.
9
10
10 FG FG pulse output pin.
This pin outputs pulse equivalent to one Hall
sensor system pulse output.
11 PWM PWM signal input pin.
When input voltage is High, output transistor turns
on. When input voltage is Low, output transistors
turn off, and motor stop. By controlling duty of
input signal, motor rotation count is adjustable.
Motor is full-speed when pin is open.
11
V
CC
12 F/R Switches motor rotation direction.
High level voltage input: U→W→V,
Low level voltage input: U→V→W.
Current flow into the motor according to the above
order.
Motor rotates reversely when the order of
energization is changed.
12
V
CC
Reverse signal
Forward signal
Forward/Reverse
Switching signal
Continued on next page.
1
V
CC
2
RF
3
4UO 9
10
F/R
PWM
RD
Top view
LV8806QA
5 6 7 8
11
12
16
15
14
13
WO
VO
COM
COMIN
FIL
GND
FG
TGND2
TGND1
OSC
LV8806QA
www.onsemi.com
6
Continued from preceding page.
Pin No. Symbol Function Equivalent circuit
13 OSC Motor start-up frequency setting pin.
A capacitor is connected between this pin and
GND.
The start-up frequency is adjustable with a
capacitor and charge/discharge current (2.5µA).
13
V
CC
14
15
16
TGND2
TGND1
GND
GND pin of the IC
Application Circuit Example
(1)Application to Y-Connector Motor
(2)Application to Delta-Connector Motor
*1. [Connection of power supply and GND]
GND is connected to the power supply line of control circuit.
*2. [Power supply stabilizer capacitor]
The power supply stabilizer capacitor needs to be 4.7µA or higher. Connect V
CC
and GND as wide and short as possible. If the
supply voltage increases due to the kickback of coil as a result of using reverse connection protector diode, make sure to connect
Zener diode between the power supply and GND.
LV8806QA uses synchronous rectification for high efficiency drive. Synchronous rectification is effective for heat reduction and
higher efficiency. However, it may increase supply voltage under the following conditions:
*When output duty is reduced rapidly.
*PWM input frequency is low.
If the supply voltage shall increase, make sure that it does not exceed the maximum ratings with the following measures:
*Select an optimal capacitor between power supply and GND.
*Insert a zener diode between power supply and GND.
*3. [COMIN and FIL]
COMIN and FIL are the filter capacitor connection pins. LV8806QA detects the position of rotor using BEMF signal generated
during motor rotation. Based on the information, current-carrying timing of the output is determined. By inserting a filter
capacitor of about 1000 to 10000pF (recommendation) between COMIN and FIL, start-up failure caused by noise is alleviated.
However, if the capacitance is too high, timing of current-carrying for output may be delayed during high-speed rotation and
efficiency may be degraded.
Make sure that the filter capacitor is connected between COMIN and FIL as short as possible to avoid influence of noise.
PWM
UO
VO
WO
COM
COMIN
FIL
*3
*8
FG
RD
*8
FG
RD
*6
*6
RF
*5
GNDTGND2
TGND1
OSC
*4
F/R
V
CC
V
CC
V
CC
PWM
*6
*2
*1
PWM
UO
VO
WO
COM
COMIN
FIL
*3
*8
FG
RD
*8
FG
RD
*6
*6
RF
*5
GNDTGND2
TGND1
OSC
*4
F/R
V
CC
V
CC
V
CC
PWM
*6
*2
*1
*7
*7
*7
P1-P3P4-P6P7-P7

LV8806QA-MH

Mfr. #:
Buy LV8806QA-MH
Manufacturer:
ON Semiconductor
Description:
Motor / Motion / Ignition Controllers & Drivers 3PHASE MOTOR DVR
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
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