ACT6390(2007) Ver la hoja de datos (PDF) - Active-Semi, Inc

Número de pieza

componentes Descripción

Fabricante

ACT6390
(Rev.:2007)

1.7A/2.5A PWM Step-Up DC/DC Converters In MSOP

Active-Semi, Inc 

ORDERING INFORMATION

PART

NUMBER

ACT6390MH-T

ACT6391MH-T

CURRENT

LIMIT

1.7A

2.5A

TEMPERATURE

RANGE

-40°C to 85°C

-40°C to 85°C

PIN CONFIGURATION

ACT6390/ACT6391

Rev PrA, 01-Sep-07

PACKAGE

MSOP-8

MSOP-8

PINS

8

8

PACKAGING

TAPE & REEL

TAPE & REEL

MSOP-8

PIN DESCRIPTIONS

PIN NAME

DESCRIPTION

1

COMP

Error Amplifier Compensation Node. Connect to a resistor RC and capacitor CC in series to

ground.

2

FB

Feedback Input. Connect this pin a resistor divider from the output to set the output voltage. FB

is regulated to 1.24V.

3

EN

Enable Control. Connect to a logic high level to enable the IC. Connect to a logic low level to

disable the IC. When unused, connect EN pin to IN (do not leave pin floating).

4

G

Ground.

5

SW

Switch Output. Connect this pin to the inductor and the schottky diode. To minimize EMI, mini-

mize the PCB trace path between this pin and the input bypass capacitor.

6

IN

Supply Input. Bypass to G with a 1µF or larger capacitor.

7

FREQ

Frequency Setting Pin. A logic low sets the switching frequency at 700kHz. A logic high sets

the switching frequency at 1.3MHz. This pin has an internal 5.5μA pull-down current.

Soft Start Control Input. Connect a capacitor from this pin to G to set soft-start timing duration

8

SS

(tSS = 2.2 x 105 x CSS). SS is discharged to ground in shutdown. SS may be left unconnected if

soft start is not desired.

Innovative Products. Active Solutions.

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www.active-semi.com

Copyright © 2007 Active-Semi, Inc.

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