SP6659EK115 Datasheet

IC型號(hào)：
SP6659EK115
PDF描述：
1.5MHz, 600mA Synchronous Buck Regulator
文件大小：
340.50KB
PDF頁(yè)數(shù)：
11頁(yè)
芯片廠家：
SIPEX

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SP6659

1.5MHz, 600mA Synchronous Buck Regulator

FEATURES

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94% Efficiency Possible

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600mA Output Current at V

= 3.6V

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2.5V to 5.5V Input Voltage Range

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1.5MHz constant frequency operation

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No Schottky Diode Required

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Output Voltages as low as 0.6V

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Slope Compensated Current Mode

Operation for Excellent Line and Load

Transient Response

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100 % Duty Cycle in LDO Mode

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<1渭A Shutdown Current, Quiescent

Current of 300

渭A

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Over-temperature protected

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Pin Compatible to LTC3406B

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Offered in Low Profile TSOT-23

package

VFB

VIN

VOUT

VIN

SP6659

5 Pin TSOT-23

RUN

SP6659

5 Pin TSOT-23

RUN

GND

Adjustable

Fixed

Now Available in Lead Free Packaging

APPLICATIONS

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Cell Phones

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Wireless and DSL Modems

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DSC's

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Portable Instruments

DESCRIPTION

The SP6659 is a 600mA synchronous buck regulator using a constant frequency, current mode

architecture. The output voltage can be programmed using an external resistor divider. The 2.5V

to 5.5V input voltage range is ideal for portable applications that use a Li-Ion battery. Switching

frequency is internally set at 1.5MHz, allowing the use of small surface mount inductors and

capacitors. The internal synchronous switch increases efficiency and eliminates the need for an

external Schottky diode. The output voltage can be programmed using an external resistor

divider. Low output voltages are easily supported with the 0.6V feedback reference voltage. The

SP6659 is available in a low profile 5 pin TSOT-23 package.

TYPICAL APPLICATION SCHEMATICS

廬

2.2渭H

RUN

2.2渭H

100pF

OUT

SP6659

OUT

SP6659

4.7渭F

Ceramic

4.7渭F

10渭F

Ceramic

RUN

OUT

10渭F

Ceramic

GND

Adjustable

Fixed

Date: 9/25/06 Rev C

SP6659 1.5MHz, 600mA Synchronous Buck Regulator

漏 2006 Sipex Corporation

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SP6659EK115 Datasheet

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