ACT6391MH-T datasheet(1/11 Pages) ACTIVE-SEMI

Part #	ACT6391MH-T

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

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Manufacturer	ACTIVE-SEMI [Active-Semi, Inc]

Direct Link	http://www.active-semi.com

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SIMPLIFIED APPLICATION CIRCUIT

ACT6390/ACT6391

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.

Rev0, 13-May-08

ACT6390

ACT6391

IN

SW

FB

G

VIN

VOUT

EN

FREQ

SS

COMP

2.7V to 5.5V

OFF

1.3MHz

700kHz

ON

R1

R2

Similar Part No. - ACT6391MH-T

Manufacturer	Part #	Datasheet	Description
Active-Semi, Inc	ACT6391MH-T	1,021Kb / 11P	1.7A/2.5A PWM Step-Up DC/DC Converters In MSOP Rev PrA, 01-Sep-07
Active-Semi, Inc	ACT6391MH-T	404Kb / 12P	1.7A/2.5A PWM Step-Up DC/DC Converters In MSOP Rev 1, 22-Aug-13

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Similar Description - ACT6391MH-T

Manufacturer	Part #	Datasheet	Description
Active-Semi, Inc	ACT6390	1,021Kb / 11P	1.7A/2.5A PWM Step-Up DC/DC Converters In MSOP Rev PrA, 01-Sep-07
Active-Semi, Inc	ACT6390	404Kb / 12P	1.7A/2.5A PWM Step-Up DC/DC Converters In MSOP Rev 1, 22-Aug-13
Texas Instruments	LM2700Q	370Kb / 19P	[Old version datasheet] 600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter
Texas Instruments	LM2700Q	1Mb / 25P	[Old version datasheet] 600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter
National Semiconductor ...	LM2700	478Kb / 17P	600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter
Texas Instruments	LM2700	1Mb / 25P	[Old version datasheet] 600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter
National Semiconductor ...	LM2700	512Kb / 17P	600kHz/1.25MHz, 2.5A, Step-up PWM DC/DC Converter
Torex Semiconductor	XC6371	235Kb / 14P	PWM Controlled Step-Up DC/DC Controllers/Converters
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ACT6391MH-T Datasheet(PDF) 1 Page - Active-Semi, Inc

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