BH6559FV Datasheet, PDF (1/4 Pages) Rohm – DC/DC converter for CD/DVD-ROM slim

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BH6559FV
DC/DC converter for CD/DVD-ROM slim
BH6559FV
BH6559FV is an IC that incorporates 1 channel variable DC/DC converter and reset function. Variable DC/DC converter
can set high-precision voltage (±2% precision) by trimming reference voltage.
!Applications
CD/DCD-ROM slim
!Features
1) Low current consumption by adopting synchronous
rectifier type.
2) Few external components reduced by the built-in power
MOS transistor.
3) Adjustable by external resistor of DC/DC converter output.
4) Built-in reset for supply voltage and ATAPI
(output pin is common).
5) Built-in delay time setting function for supply voltage reset.
!External 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
!Absolute maximum ratings (Ta=25°C)
Parameter
Symbol
Limits
Unit
Supply voltage 1 (PRE block)
PREVCC1
7
V
Supply voltage 2 (PRE block)
PREVCC2
7
V
Supply voltage (PRE block)
Pin output current (DSW block)
Power dissipation
POWVCC
Iswomax
Pd
7
V
1 ^∗1
A
0.56 ^∗2
W
Operating temperature range
Topr
−30 to +85
C
Storage temperature range
Tstg
−55 to +150
C
∗1 Intermittent current at maximum applied time of 5msec,1/10 duty (Max.)
∗2 Derating : 4.5mv/ C for operation above Ta=25 C. On less than 3% (percentage occupied by copper foil),
70mm⁺ 70mm, t=1.6mm, glass epoxy mounting.
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