BH6552FV Datasheet, PDF (1/4 Pages) Rohm – Voltage controller for CD-ROM

Optical Discs
Voltage controller for CD-ROM
BH6552FV
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.
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%).
zApplications
CD, DVD
zExternal dimensions (Units : mm)
5.0±0.2
16 9
1
8
0.15±0.1
0.65
0.1
0.22±0.1
SSOP-B16
zAbsolute maximum ratings (Ta=25°C）
Parameter
Symbol
Limits
Unit
Power MOS supply voltage
PowVCC
9
V
Control circuit power supply voltage PreVCC
9
V
Pre driver power supply voltage
VG(9pin)
12
V
DSW output current
Power dissipation
Iomax
Pd
1 ^∗1
560 ^∗2
A
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）
Parameter
Symbol
Power MOS supply voltage
PowVCC
Control circuit power supply voltage
Pre driver power supply voltage ^∗
PreVCC
VG(9pin)
Atmosphere temperature range
Ta
∗ In case of being supplied external voltage source.
Min.
Typ.
Max. Unit
4.5
5.0
5.5
V
4.5
5.0
5.5
V
8.0
10.0
11.5
V
−10
25
70
°C
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