Rohm BH6541KV Power driver for portable cd Datasheet

00W149A
Power driver for portable CD
BH6541KV
Description
Dimension (Units : mm)
BH6541KV is a 3chPWM driver + 1ch sensorless
spindle driver developed for driving motor and
actuator of portable CD,MD. Lower power
consumption can be achieved in the set by
applying the power MOSFET. In addition,
the size reduction in the set can be accomplished
by using the VQFP48 package.
9.0±0.3
7.0±0.2
24
48
13
1.425±0.1
0.1±0.1
1
Features
<PWM driver: 3ch>
1) Digital input, Direct PWM driving system
<Spindle driver>
1) 3-phase full-wave sensorless driving system
2) Built-in start and brake function
3) Built-in half-bridge driver for power supply
25
0.5
12
0.2±0.1
0.4
9.0±0.3
7.0±0.2
36
37
0.15±0.1
0.1
VQFP48
Applications
Portable CD, MD
Absolute Maximum Ratings (Ta=25˚C)
Parameter
Symbol
Limits
Unit
Control circuit supply voltage
Vcc
7
V
PVCC
VG (19pin)
7
9
Pd
1.12 *
Operating temperature range
Topr
Storage temperature range
Tstg
–30 ~ +85
–55 ~ +150
Power block supply voltage
Pre-driver supply voltage
Power dissipation
V
V
W
˚C
˚C
*Derating : 9.0mW/˚C for operation above Ta=25˚C
On less than 3% (percentage occupied by copper foil),70mmx70mm, t=1.6mm, glass epoxy mounting.
Recommended Operating Conditions (Ta=25˚C)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Control circuit supply voltage
VCC
2.2
2.4
4.5
V
PVCC
0.8
1.5
4.5
V
VG (19pin)
—
7.2
8.5
V
Power block supply voltage
Pre-driver supply voltage
February, 2001
Electrical characteristics (Unless otherwise noted; Ta=25˚C, Vcc=2.4V, PVCC=2.4V,
RL=8Ω+47µH(H bridge), RL=2Ω+47µH(spindle)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Current at no signal (VCC)
ICC2
–
2
4
mA
All channels no input
Current at operating
ICC2
–
5
9
mA
All channels operating
HBRON
–
1.5
2.5
Ω
Sum of ON resistance (upper+lower)
SPRON
–
1
2
Ω
Sum of ON resistance (upper+lower)
VCD
0
–
Vcc–1.0V
V
CST charging current
ICTSO
–4.1
–2.5
–0.9
µA
CSL discharging current
ICTSI
1.4
3.5
5.7
mA
CST charging current
CSL discharging current
ICLSO
ICLSI
–7.8
3.5
–5
7.5
–2.4
11.6
µA
µA
VG
6
7.2
8
V
IBRON
–
0.6
1.2
Ω
VMON1
1.1
1.2
1.3
V
Conditions
<H bridge driver (ch1,2,3)>
Output ON resistance
<Spindle driver>
Output ON resistance
Detection comparator input
<Charge-pump>
Output voltage at no input
<Half-bridge driver>
Output ON resistance
Sum of ON resistance (upper+lower)
<PVCC/2 monitor pin>
Monitor pin voltage1
Application Circuit
FOCUS TRACKING
0.1µF
COIL
COIL
0.1µF
36
30
SLED
MOTOR
M
35
34
ch1
33
32
31
29
28
27
ch2
26
25
ch3
37
CLK
38
FE(F)
39
FE(R)
40
TE(F)
41
TE(R)
42
SL(F)
43
SL(R)
44
FG
45
HBIN
46
BRK
AD_PVCC
DSP
24
H-Bridge
H-Bridge
Pre Driver
Pre Driver
H-Bridge
Charge Pump
Oscilator
Pre Driver
Slope
Signal
Phase
Control
VG
µ–COM
MUTE 23
22
21
20
0.033µF
0.033µF
0.1µF
19
TSD
18
17
Logic
0.22µF
16
2200pF
15
2200pF
47
14
2200pF
48 PVCC/2
Monitor
13
Pre Driver
Pre Driver
1
2
3
4
5
6
7
8
9
10
11
12
15kΩ
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document use silicon as a basic material.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.0
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