ROHM BD6609FV

00W013A
Spindle Motor Driver for CD/MD
BD6609FV
Description
Dimension
(Units:mm)
The BD6609FV is a CD/MD spindle motor driver
employing a 3-phase, full-wave, soft switching,
driving system. This motor driver reduces
switching noise of the output current and enables
for smooth motor rotation.
6.5–0.2
0.1
1
10
0.65
0.22–0.1
0.15–0.1
6.4–0.3
1.15–0.1
11
4.4–0.2
20
0.3Min.
0.1
Features
1) Switching noise reduced due to a soft
switching driving system
2) Sensorless driving system allows for
a small set design
3) Built-in start, brake, and standby function
4) FG signal output function
(with built-in "chatter" prevention circuit)
5) Built-in Thermal Shutdown (TSD) circuit
SSOP-B20
Applications
CD, MD
Absolute Maximum Ratings
Parameter
Power supply voltage
(Ta=25˚C)
Symbol
Limits
Unit
VCC
7
V
Pd
800 *
mW
Operating temperature range
Topr
˚C
Storage temperature range
Tstg
–30 ∼ +80
–55 ∼ +150
Output current
IOMAX
Power dissipation
* Derating: 6.4mW/˚C
˚C
700
mA
for operation above Ta=25˚C.
Recommended Operating Conditions
Parameter
Power supply voltage
(Ta=25˚C)
Symbol
Min.
Typ.
Max.
Unit
VCC
2.4
—
6.5
V
March, 2000
Electrical characteristics (Unless otherwise noted, Ta=25˚C, Vcc=3.4V, V M=0.3V)
Parameter
Symbol
ICCS
Min.
—
Typ.
10
Max.
35
Unit
µA
ICC
—
11
15
mA
Output saturation voltage H1
VOH1
—
0.85
1
V
STBY=H IM=20mA
VM=VCC Io=400mA
Output saturation voltage H2
VOH2
—
0.2
0.35
V
VM=VCC–1V Io=400mA
VOL
—
0.25
0.35
V
Io=400mA
VCO
–10
—
+10
mV
IST
—
115
155
µA
Input "L" level voltage
VSTH
VSTL
2
—
—
—
VCC
0.3
V
V
∼FG pin∼
Output "L" voltage
VOLF
—
0.1
0.25
V
Pull up resistance
RBF
10
20
30
Circuit current
Output saturation voltage L
Conditions
STBY=L
∼Rotor position detection pin∼
Input offset voltage
∼Standby pin∼
Input current
Input "H" level voltage
∗ This product is not designed for protection against radioactive rays.
STBY=VCC
IO=500µA
Ω
Block Diagram
FG
11
1µF
16
Vcc
22kΩ
EX-OR
2200pF
17
VIN
2200pF
5
1
Pre-drive
4
Upper and lower
distribution
Timing selector
2200pF
Drive signal
composition logic
3
UIN
20
19
WIN
2
6
COM
0.22µF
15
7
CST
Start-up
control logic
STAND-BY
Phase
control
UOUT
VOUT
WOUT
0.5Ω
RF
5Ω
RIB
14 STBY
Vcc
13 BRK+
0.01µF
12
8
Slope
composition
CSL1
0.01µF
VM
9
TSD
CSL2
10
18
GND
BD6609FV
GSUB
BRK–