Ordering number : ENA0818A
LV8280T
Overview
Bi-CMOS LSI
DVD-ROM Spindle Motor Driver IC
LV8280T is s sensorless motor driver that provides a reverse torque braking function and is appropriate for spindle motor
drive in CD-ROM, DVD and similar drives. This IC adopts a direct PWM drive technique and uses MOSFETs as its output
transistors for highly efficient motor drive.
Since the LV8280T can implement a motor drive system without the use of Hall-effect devices, it can contribute to motor
system miniaturization, thinner form factors, and lower power consumption.
Features
•
Three-phase full-wave, sensorles drive method and Direct PWM drive
Specifications
Absolute Maximum Ratings
at Ta = 25°C
Parameter
Power supply voltage
Motor power supply voltage
Pre-drive voltage (gate voltage)
Maximum output current
Allowable power dissipation 1
Allowable power dissipation 2
Operating temperature
Storage temperature
Symbol
VCC max
VS max
VG max
IO max
Pd max1
Pd max2
Topr
Tstg
Independent IC
* Mounted on a board.
Conditions
Ratings
6.0
6.0
10
1.0
0.5
1.2
-10 to +75
-40 to +150
Unit
V
V
V
A
W
W
°C
°C
* : Mounted on a board : 76.1×114.3×1.6mm
3
, glass epoxy board
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 (home appliances, AV equipment,
communication device, office equipment, industrial equipment etc.). 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 applications outside the standard applications of our
customer who is considering such use and/or outside the scope of our intended standard applications, please
consult with us 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.
53007 TI PC B8-8438 No.A0818-1/8
LV8280T
Allowable Operating Ranges
at Ta = 25°C
Parameter
Power supply voltage
Motor power supply voltage
Predriver voltage (gate voltage)
Symbol
VCC
VS
VG
Conditions
Ratings
4.5 to 5.5
0 to VCC
VS+3.5 to 9.5
Unit
V
V
V
Electrical Characteristics
at Ta = 25°C, VCC = 5V
Parameter
Current drain 1
Current drain 2
Charge Pump Output
Output voltage
Internal Oscillation Circuit
Internal oscillation frequency
Output block
SOURCE 1
SINK
SOURCE+SINK
Position Detector Comparator
Input offset voltage
Control
VCREF input voltage range
VCTL input voltage range
Current Control Circuit
Forward drive gain
Reverse drive gain
Dead zone width
Limiter voltage
VCO Pin
VCO high-level voltage
VCO low-level voltage
S/S Pin
High-level input voltage range
Low-level input voltage range
Break SEL Pin
High-level input voltage range
Low-level input voltage range
FG Output Pin
Output saturation voltage
Thermal Protection Circuit
Thermal shutdown operating
temperature
Thermal shutdown temperature
hysteresis
*Design target value and no measurement is performed.
ΔTTSD
*Design target value
40
°C
TTSD
*Design target value
150
180
°C
FGsat
IO = 0.5mA
0.5
V
BRH
BRL
Short-circuit braking
Reverse torque braking
2.7
0
VCC
0.6
V
V
SSH
SSL
Start
Stop
2.7
0
VCC
0.6
V
V
VCOH
VCOL
0.8
0.3
1.0
0.5
1.2
0.7
V
V
GDF+
GDF-
VDZ
VRf
VCREF = 1.65V
0.20
-0.30
100
0.18
0.25
-0.25
150
0.20
0.30
-0.20
200
0.22
fold
fold
mV
V
VCREF
VCTL
VCREF = 1.65V
0
1.65
VCC
V
V
VOFS
*Design target value
-10
10
mV
Ron (H1)
Ron (L)
Ron (H+L)
IO = 0.5A, VS = 5V, VG = 9.5V, Forward
transistor
IO = 0.5A, VS = 5V, VG = 9.5V
IO = 0.5A, VS = 5V, VG = 9.5V
0.25
0.5
0.5
1.0
Ω
Ω
0.25
0.5
Ω
f clk
3.0
3.2
3.4
MHz
VCP
9.1
9.5
9.9
V
Symbol
ICC1
ICC2
Conditions
S/S pin : high level
S/S pin : low level(standby mode)
min
3.0
typ
4.1
max
6.0
20
Unit
mA
μA
No.A0818-2/8
LV8280T
Package Dimensions
unit : mm (typ)
3259
0.9
9.75
30
16
Pd max – Ta
Specified circuit board : 76.1×114.3×1.6mm
3
glass epoxy board
Allowable power dissipation, Pd max – W
0.6
5.6
7.6
0.5
0.40
0.3
0.40
1
0.65
(0.33)
0.22
15
0.15
0.08
(1.0)
1.2max
0.24
0
–
10
0
20
40
60
80
100
SANYO : TSSOP30(275mil)
Ambient temperature, Ta – °C
Pin Assignment
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
WOUT
VOUT
UOUT
LV8280T
VCREF
VCOIN
RMAX
COMI
VCTL
RMIN
GND
GND
VCO
VCC
BRK
FG3
15
VG
VCC
+
Phase comparator
Wave
synthesizer
COM
VS
FG
+
VCO
OSC
Charge pump
UOUT
VOUT
WOUT
TSD
-
+
-
+
RF
S/S
VG
PGND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Block Diagram
VCOIN RMIN RMAX
VCO
COMIN
FIL
CPC1 CP1
BRK
Sensorless logic
S/S
Commutation
logic
VREF
-
+
-
+
VCTL VCREF
FIL
COM
CPC
FG1
No.A0818-3/8
VS
CP
NC
NC
NC
VS
RF
RF
LV8280T
Pin Functions
Pin No.
1
Pin name
VG
Pin description
Charge pump step-up voltage output. Insert a
capacitor between this pin and ground.
Equivalent Circuit
30
VCC
1
30
CPC
Charge pump step-up pin.
Insert a capacitor between this pin and CP (pin 29).
50Ω
2
3
VCC
VCREF
Small-signal system power supply.
Insert a capacitor between this pin and ground
Speed control reference voltage input
VCC
4
VCTL
Spindle speed control
300Ω
300Ω
4
5
VCO
VCO oscillator.
Insert a capacitor between this pin and ground.
VCO oscillation frequency changes with the spindle
motor rotational speed.
3
VCC
5
500Ω
500Ω
500Ω
6
RMAX
VCO highest frequency setting.
Insert a resistor between this pin and ground.
Making the value of the resistor smaller increases
the frequency.
Set the frequency so that the VCO oscillator
frequency when the VCOIN pin voltage is VCC - 1 V
is over 96 times the switching frequency at the
maximum motor speed.
VCC
500Ω
7
RMIN
VCO lowest frequency setting. Reducing the value
of the connected resistor increases the frequency.
500Ω
7
6
Continued on next page.
No.A0818-4/8
LV8280T
Continued from preceding page.
Pin No.
8
Pin name
VCOIN
Pin description
VCO control voltage input.
Insert a capacitor between this pin and ground.
Equivalent Circuit
VCC
8
1kΩ
1kΩ
9
10
11
GND
S/S
Small-signal system ground.
Spindle motor start/stop control. Apply a high level
for the start state.
VCC
10kΩ
12
BRK
Spindle motor braking type switching control
Low level: reverse torque braking.
High level: short-circuit braking.
50kΩ
13
COMIN
Motor position detection comparator input.
Insert a capacitor between this pin and FIL (pin 14).
VG
14
FIL
Motor position detection comparator input.
Insert a capacitor between this pin and COMIN (pin
13).
17
13
600Ω
600Ω
14
6kΩ
12kΩ
17
COM
Spindle motor COM point connection.
6kΩ
15
FG3
FG3 pulse output. Outputs a pulse signal equivalent
to a three Hall sensor system pulse output.
Open-drain output.
VCC
16
FG1
FG1 pulse output. Outputs a pulse signal equivalent
to a one Hall sensor system pulse output. Open-
drain output.
18
28
VS
Spindle motor drive power supply. Insert a capacitor
between this pin and ground.
21
23
25
20
VCC
27
18
28
21
23
25
20
27
WOUT
VOUT
UOUT
RF
Outputs.
Connect these pins to the motor coils.
Output current detection. The drive current is
detected using a small resistor inserted between
this pin and ground.
19
22
24, 26
PGND
NC
Large signal system ground.
Not connected
Continued on next page.
No.A0818-5/8
stm32/stm8
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