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 

ACT6390/ACT6391

Rev PrA, 01-Sep-07

Advanced Product Information – All Information Subject to Change

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

FEATURES

 Greater than 90% Efficiency

 Adjustable Output Voltage Up to 12V

 Internal 14V Power MOSFET

 Two Peak Current Options:

 ACT6390: 1.7A, 0.2Ω

 ACT6391: 2.5A, 0.15Ω

 Selectable 700kHz/1.3MHz Frequency

 Integrated Over-Voltage Protection (OVP)

 Programmable Soft-Start Function

 Thermal Shutdown

 Cycle-by-Cycle Over-Current Protection

 Small MSOP-8 Package

APPLICATIONS

 TFT LCD Monitors

 Battery-Powered Equipment

 Set-Top Boxes

 DSL and Cable Modems and Routers

GENERAL DESCRIPTION

The ACT6390/ACT6391 are high-performance,

fixed-frequency, current-mode PWM step-up

DC/DC converters that incorporate internal power

MOSFETs. The ACT6390 includes an integrated

0.2Ω power MOSFET that supports peak currents

of up to 1.7A, while the ACT6391’s integrated

0.15Ω power MOSFET supports currents of up to

2.5A.

The ACT6390 and ACT6391 both utilize simple ex-

ternal loop compensation and a pin-selectable

fixed-frequency of either 700kHz or 1.3MHz, allow-

ing optimization between component size, cost, and

AC performance across a wide range of applica-

tions. Additional functions include an externally pro-

grammable soft-start function for easy inrush cur-

rent control, internal over-voltage protection (OVP),

cycle-by-cycle current limit protection, and thermal

shutdown.

Both the ACT6390 and the ACT6391 are available

in the small 8-pin MSOP-8 package.

SIMPLIFIED APPLICATION CIRCUIT

Innovative Products. Active Solutions.

-1-

www.active-semi.com

Copyright © 2007 Active-Semi, Inc.

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