BD8643FV Datasheet, PDF (1/5 Pages) Rohm – Synchronous rectification with built-in FET type DC/DC converter IC

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STRUCTURE
：
PRODUCT NAME ：
MODEL NAME ：
Silicon Monolithic Integrated Circuit
Synchronous rectification with built-in FET type DC/DC converter IC
BD8643FV
FEATURES
： ・Synchronous rectification with built-in FET type DC/DC converter
・Output current 3A
・Reference voltage accuracy FB 0.8V±1%
・Switching frequency 100kHz～600kHz
・Over current protection circuit
・Thermal shutdown
・Input low voltage detection UVLO
・Soft start / Start delay circuit
・Programmable OFFLATCH time
◎ABSOLUTE MAXIMUM RATING （Ta=25℃）
Parameter
Symbol
Limits
Unit
Input supply voltage
BOOT terminal voltage
EN terminal voltage
Input terminal voltage
SW terminal voltage
Output switch current
Power dissipation
V_IN
V_BOOT
V_EN
V_INP*1
V_SW
I_OUT
Pd
20
V
28
V
GND-0.3 ～ V_IN+0.3
V
GND-0.3 ～ 7
V
GND-0.3 ～ V_IN+0.3
V
3.5^*2
A
2.06^*3
ï¼·
Operating temperature
Topr
-20 ～ 85
℃
Storage temperature
Tstg
-55 ～ 150
℃
Maximum Junction
Temperature
Tjmax
150
℃
＊1 V_INP Application terminal： SS/DELAY, FB, FC, RT, PSET
＊2 Do not however exceed Pd.
＊3 （70mm×70mm, thickness 1.6mm, and four layer glass epoxy substrates）When mounting substrate and the package
back exposure part are connected with solder.
Operating at higher than Ta=25℃, 9.5mW shall be reduced per 1
◎Operation condition
Parameter
Symbol
MIN TYP MAX Unit
Input supply voltage
V_IN
4.5
-
18.0
Ｖ
Output switch current
I_OUT
-
-
3.0
A
This product is not designed for protection against radioactive rays.
REV. A