LV8806GQ is a 3-phase sensor-less motor driver IC.
3-phase driver allows low power consumption and low vibration. And Hall sensor-less drive allows reduction of the
size of a motor system.
This IC is suitable for use in products which require high reliability and long life such as note PC fan.
Functions
•
Built-in current limit circuit (Operates when RF resistance is 0.5Ω and Io=0.53A)
•
3-phase full-wave sensor-less driver
•
Direct PWM input
•
RD (lock detection) output signal pin
•
FG (rotation count) output signal pin
•
Built-in lock protection and auto-recovery circuit
•
Built-in TSD (thermal shutdown) circuit
Specifications
Absolute Maximum Ratings
at Ta = 25°C
Parameter
VCC maximum supply voltage
OUT pin maximum output current
OUT(VO, VO, WO) pin withstand voltage
FG output pin maximum sink current
FG output pin withstand voltage
RD output pin maximum sink current
RD output pin withstand voltage
Allowable power dissipation
Symbol
VCC max
IOUT max
VOUT max
IFG max
VFG max
IRD max
VRD max
Pd max1
Pd max2
Operating temperature
Storage temperature
*2: Tjmax must not exceed 150°C
Caution 1) Absolute maximum ratings represent the value which cannot be exceeded for any length of time.
Caution 2) Even when the device is used within the range of absolute maximum ratings, as a result of continuous usage under high temperature, high current,
high voltage, or drastic temperature change, the reliability of the IC may be degraded. Please contact us for the further details.
Topr
Tstg
IC only
With specified board *1
*2
Conditions
Ratings
7
0.7
7
5
7
5
7
150
700
-40 to 95
-55 to 150
Unit
V
A
V
mA
V
mA
V
mW
mW
°C
°C
*1: With specified board: 50mm×50mm×1.6mm, grass epoxy board / single layer.
Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to
"standard application", intended for the use as general electronics equipment. The products mentioned herein
shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life,
aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system,
safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives
in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any
guarantee thereof. If you should intend to use our products for new introduction or other application different
from current conditions on the usage of automotive device, communication device, office equipment, industrial
equipment etc. , please consult with us about usage condition (temperature, operation time etc.) prior to the
intended use. If there is no consultation or inquiry before the intended use, our customer shall be solely
responsible for the use.
Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate
the performance, characteristics, and functions of the described products in the independent state, and are not
guarantees of the performance, characteristics, and functions of the described products as mounted in the
customer
'
s products or equipment. To verify symptoms and states that cannot be evaluated in an independent
device, the customer should always evaluate and test devices mounted in the customer
'
s products or
equipment.
83111 SY 20110720-S00006 No.A1974-1/6
LV8806GQ
Recommended Operating Conditions
at Ta = 25°C
Parameter
VCC supply voltage
Operating VCC supply voltage range
PWM input frequency range
Symbol
VCC
VCC op
fPWM
Conditions
Ratings
5.0
2.0 to 6.0
20 to 50
Unit
V
V
kHz
Electrical Characteristics
at Ta
=
25°C, VCC = 5.0V
Parameter
Circuit current
Symbol
ICC1
ICC2
Output circuit
ON-resistance of high-side output transistor
ON-resistance of low-side output transistor
Sum of the ON-resistance of high/low-side
output transistor
Startup oscillation (OSC) pin
OSC pin charge current
OSC pin discharge current
OSC pin High level threshold voltage
OSC pin Low level threshold voltage
PWM input (PWM) pin
PWM pin High level input voltage
PWM pin Low level input voltage
PWM pin current
Forward/reverse switching (F/R) pin
F/R pin High level input voltage
F/R pin Low level input voltage
F/R pin current
FG, RD output pin
FG pin Low level voltage
FG pin leakage current
RD pin Low level voltage
RD pin leakage current
Current limiter circuit
Limiter voltage
Lock protection circuit
Output ON-time
Output OFF-time
Output ON/OFF ratio
Thermal shutdown circuit
Operating temperature
Hysteresis width
TSD
ΔTSD
*Design guarantee
*Design guarantee
150
180
30
°C
°C
LT1
LT2
LRTO
LRTO=LT2/LT1
0.35
3.2
4.9
0.50
4.5
9.0
0.65
5.9
16.8
S
S
VRF
Operating when RF=0.5Ω, IO=0.53A
0.238
0.265
0.291
V
VFG
IFG
VRD
IRD
IFG=3mA
VFG=7V
IRD=3mA
VRD=7V
0.2
0.2
0.3
10
0.3
10
V
µA
V
µA
VFRH
VFRL
IFR
FR pin=5V
2.5
0
10
VCC
1.0
50
V
V
µA
VPWMH
VPWML
IPWM
PWM pin=0V
2.5
0
-50
-10
VCC
1.0
V
V
µA
IOSCC
IOSCD
VOSCTHH
VOSCTHL
OSC=0V
OSC=1.2V
-3.25
1.75
1.0
0.5
-2.50
2.50
1.1
0.6
-1.75
3.25
1.2
0.7
µA
µA
V
V
RON(H)
RON(L)
RON(H+L)
IO=500mA
IO=500mA
IO=500mA
0.5
0.5
1.0
0.9
0.9
1.8
Ω
Ω
Ω
PWM=5V
PWM=0V
Conditions
Ratings
min
typ
1.5
10
max
2.5
50
Unit
mA
µA
*Design guarantee: This is a design target value, which will not be measured independently.
No.A1974-2/6
LV8806GQ
Package Dimensions
unit : mm (typ)
3341
TOP VIEW
2.6
SIDE VIEW
BOTTOM VIEW
1.0
Pd max -- Ta
Specified board: 50×50×1.6mm
glass epoxy board single layer.
Allowable power dissipation, Pd max -- W
(0.125)
0.8
0.7
0.6
2.6
0.4
16
0.5
0.25
2
1
(0.55)
(0.13)
(C0.116)
0.4
0.31
0.6
SIDE VIEW
0.2
(0.035)
SANYO : UCT16(2.6X2.6)
0
--40
-20
0
20
40
60
80
100
120
Ambient temperature, Ta -- C
Block Diagram
FG
RD
10
FG
9
RD
REFOSC
PWM
11
SENSORLESS
LOGIC
F/R
SWITCH
START
OSC
PRI
DRIVE
F/R
OSC
13
12
FIL
8
7
COMIN
6
COM
CURR LIM
16
GND
14
TGND1
15
TGND2
1
SELECTOR
5
4
3
2
VCC
UO
VO
WO
COM
RF
No.A1974-3/6
LV8806GQ
Pin Assignment
TGND2
TGND1
GND
16
RF 1
WO 2
15
14
13
12 F/R
11 PWM
LV8806GQ
VO 3
UO 4
5
VCC
OSC
10 FG
9 RD
6
COM
7
COMIN
8
FIL
Top view
Pin function
Pin No.
1
Symbol
RF
Function
Output current detection pin. Drive current is
detectable with resistors connected to GND.
2
3
4
5
UO
VO
WO
VCC
IC power supply pin and motor power supply pin.
A capacitor is connected between GND and this
pin.
6
7
COM
COMIN
Connected to the midpoint of the motor.
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.
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.
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.
Forward signal
VCC
Reverse signal
VCC
Equivalent circuit
5
2
3
4
1
Output pin.
Connected to motor coil.
UO
VO
WO
6
7
8
9 10
11
12
Forward/Reverse
Switching signal
Continued on next page.
No.A1974-4/6
LV8806GQ
Continued from preceding page.
Pin No.
13
Symbol
OSC
Function
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).
VCC
Equivalent circuit
13
14
15
16
TGND2
TGND1
GND
GND pin of the IC
Application Circuit Example
(1)Application to Y-Connector Motor
VCC
*2
(2)Application to Delta-Connector Motor
VCC
*2
VCC
UO
VO
PWM
*6
VCC
UO
VO
PWM
*6
PWM
WO
COM
PWM
WO
COM
*7
*7
*7
VCC
F/R
COMIN
FIL
FG
RD
*4
*3
*8
*8
VCC
F/R
FG
RD
COMIN
FIL
FG
RD
*3
*8
*8
*6
*6
*6
*6
FG
RD
*5
OSC
RF
*5
*4
OSC
RF
TGND1 TGND2 GND
*1
TGND1 TGND2 GND
*1
*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 VCC 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.
LV8806GQ 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. LV8806GQ 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.
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