99W134A
DC/DC Converter+Reset
BH6557FV
Description
The BH6557FV is a variable output DC/DC converter
IC with reset. The DC/DC converter output voltage
value and reset voltage value can be adjusted by
external resistance.
Dimension
(Units : mm)
Features
1) Synchronous rectification enables high efficiency
2) Built-in charge pump circuits for operating output power MOS
3) Built-in variable reset circuit
4) Built-in power MOS Tr requires fewer external components
5) Mute circuit built-in
6) Built-in thermal shut down circuit
7) SSOP-B16 package has a smaller board footprint
SSOP-B16
Applications
CD-ROM
Absolute Maximum Ratings
(Ta=25 藲C )
Parameter
Power MOS supply voltage
Control circuit supply voltage
Pre driver supply voltage
Output current from DSW terminal
Power dissipation
Operating temperature range
Storage temperature range
Symbol
PowVcc
PrePcc
VG(9pin)
Iswomax
Pd
Topr
Tstg
Limits
9
9
12
1
560
*2
*1
Unit
V
V
V
A
mW
藲C
藲C
鈥?30 ~ + 85
鈥?55 ~ +150
*
1 Derating : 4.5mV/藲C for operation above Ta=25 藲C.
On less than 3% (percentage occupied by copper foil), 70mm
樓
70mm, t=1.6mm, glass epoxy mounting.
*
2 Intermittent current at maximum applied time of 5msec, 1/10 duty (Max.)
January, 2000
1
2
