BD8646 データシートの表示（PDF） - ROHM Semiconductor

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BD8646

Synchronous rectification

ROHM Semiconductor 

1/4

STRUCTURE ：

PRODUCT NAME

MODEL NAME ：

FEATURES ：

Silicon Monolithic Integrated Circuit

：

Synchronous rectification with built-in FET type DC/DC converter IC

BD8646FV

・Synchronous rectification with built-in FET type DC/DC converter

・Output current 2A

・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

VIN

VBOOT

VEN

VINP*1

VSW

IOUT

Pd

20

V

28

V

GND-0.3 〜 VIN+0.3

V

GND-0.3 〜 7

V

GND-0.3 〜 VIN+0.3

V

2.5*2

A

2.06*3

Ｗ

Operating temperature

Topr

-20 〜 85

℃

Storage temperature

Tstg

-55 〜 150

℃

Maximum Junction

Temperature

Tjmax

150

℃

＊1 VINP 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

Output switch current

VIN

4.5

-

18.0

Ｖ

IOUT

-

-

2.0

A

This product is not designed for protection against radioactive rays.

REV. B

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