Rohm BH6552FV Voltage controller for cd-rom Datasheet

BH6552FV
Optical Discs
Voltage controller for CD-ROM
BH6552FV
BH6552FV is a voltage controller developed for CD-ROM. This IC incorporates 3.3V output DC/DC converter and reset
circuit into a single chip.
zExternal dimensions (Units : mm)
zFeatures
< 3.3V DC / DC converter >
∙ Intended for low drain current by adopting sync
rectification type.
∙ Power MOS Tr is contained.
∙ 3.3V DC/DC converter reduces variation through laser
trimming (3.3V ± 2%).
∙ Built-in mute function.
< Reset circuit >
∙ Source voltage Reset reduces variation through laser
trimming (3.7V ± 2%).
5.0±0.2
9
1
8
1.15±0.1
0.1
6.4±0.3
4.4±0.2
0.3Min.
16
0.65
0.15±0.1
0.1
0.22±0.1
SSOP-B16
zApplications
CD, DVD
zAbsolute maximum ratings (Ta=25°C)
Parameter
Power MOS supply voltage
Control circuit power supply voltage
Pre driver power supply voltage
DSW output current
Power dissipation
Symbol
Limits
Unit
PowVCC
9
V
PreVCC
9
V
VG(9pin)
12
Iomax
1
Pd
560
V
∗1
A
∗2
mW
Operating temperature range
Topr
−30~+85
°C
Storage temperature range
Tstg
−55~+150
°C
∗1 Switching current of maximum time 5msec and duty is below 1/10.
∗2 On less than 3%(percentage occupied by copper foil), 70mm×70mm, t=1.6mm,
glass epoxy mounting.Reduce power by 4.5mW for each degree above 25°C.
zRecommended operating conditions (Ta=25°C)
Symbol
Min.
Typ.
Max.
Unit
Power MOS supply voltage
PowVCC
4.5
5.0
5.5
V
Control circuit power supply voltage
PreVCC
4.5
5.0
5.5
V
VG(9pin)
8.0
10.0
11.5
V
Ta
−10
25
70
°C
Parameter
Pre driver power supply voltage
Atmosphere temperature range
∗
∗ In case of being supplied external voltage source.
1/3
BH6552FV
Optical Discs
zElectric characteristics (Unless specified particularly Ta=25°C, PREVcc=5V)
Parameter
Typ.
Max.
Unit
Symbol
Min.
Current in stanby mode
IST
−
170
290
µA
Quiescent current
ICC
−
1.45
2.60
mA
VG quiescent current
ICG
−
80
160
µA
EI terminal threshold voltage
VEITH
1.19
1.25
1.31
V
SOFT terminal output voltage
VSOFT
1.70
2.40
3.10
V
Conditions
CE=0V
< 3.3V DC/DC converter >
SOFT terminal source current
ISOFT
6.5
9.5
12.5
µA
SOFT terminal impedance
RSOFT
192
253
314
kΩ
DSW terminal ON resistor H
RDSWONH
−
0.42
0.87
Ω
IL=500mA
DSW terminal ON resistor L
RDSWONL
−
0.30
0.60
Ω
IL=−500mA
DSW terminal oscillation frequency
fDSW
210
310
410
kHZ
DSW terminal minimum pulse width
tDSWMIN
0.01
−
0.50
µ sec
VDCO
3.24
3.30
3.36
V
Output voltage
VG
7.7
9.7
11.7
V
VG drop mute
VGM
5.0
6.0
7.0
V
free-running oscillation frequency
fOSC
210
310
410
kHZ
VCC reset ON voltage
VRSTON
3.63
3.70
3.77
V
VCC reset hysteresis width
VRSTHYS
30.0
60.0
90.0
mV
VRSTO
−
0.16
0.32
V
VDD terminal threshold voltage
< Charge pump >
In action
Reset monitor circuit
VCC reset output voltage
IL=1mA,PREVCC=3.5V
∗This product is not designed for protection against radioactive rays.
2/3
47µF
100k 1000pF
0.1µF
0.1µF
12
4
5
PREDRIVER
SAW OSC
−
+
13
6
11
7
CE
CHG
PMP
(PREVCC×2)
10
8
SOFT
9
0.1µF
VCC:5V
10k
3
14
VCCRESET
CE
µ−COM
10µF
47µF
1000pF
2
15
0.1µF
1
−
+
16
+
+
−
VDD : 3.3V
BH6552FV
Optical Discs
zApplication circuit
100k
0.1µF
0.1µF
3/3
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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