SP6651AEU/TR Datasheet

IC型號：
SP6651AEU/TR
PDF描述：
High Efficiency 800mA Synchronous Buck Regulator Ideal for p...
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160.98KB
PDF頁數(shù)：
16頁
芯片廠家：
SIPEX

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SP6651A

Ideal for portable designs powered with Li Ion battery

High Efficiency 800mA Synchronous Buck Regulator

FEATURES

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DFN Package (3mm x 3mm)

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Ultra-low 20碌A(chǔ) Quiescent Current

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98% Efficiency Possible

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800mA Output Current

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2.7V to 5.5V Input Voltage Range

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Output Adjustable Down to 1.0V

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No External FET鈥檚 Required

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1.25A Inductor Peak Current Limit

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100% Duty Ratio Low Dropout Operation

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80碌A(chǔ) Light Load Quiescent Current

in Dropout

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Over Temperature Protection

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Logic Shutdown Control

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Programmable UVLO and Adaptive

Battery Low Output

BLON

SP6651A

10 Pin DFN

GND

OUT

Now Available in Lead Free Packaging

APPLICATIONS

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PDA's

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DSC's

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MP3 Players

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USB Devices

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Point of Use Power

DESCRIPTION

The SP6651A is a 800mA synchronous buck regulator which is ideal for portable applications that

use a Li-Ion or 3 cell alkaline/NiCD/NiMH input. The SP6651A鈥檚 proprietary control loop, 20碌A(chǔ)

light load quiescent current, and 0.3鈩?power switches provide excellent efficiency across a wide

range of output currents. As the input battery supply decreases towards the output voltage the

SP6651A seamlessly transitions into 100% duty ratio operation further extending useful battery

life. The SP6651A is protected against overload and short circuit conditions with a precise

inductor peak current limit. Other features include programmable under voltage lockout and low

battery detection, externally programmed output voltage down to 1.0V, logic level shutdown

control, and 140擄C over temperature shutdown.

TYPICAL APPLICATION SCHEMATIC

2.7V to 5.5V Input

10碌H

10鈩?/div>

VIN

1碌F

OUT

800mA

22碌F

SP6651A

VIN

BLON

GND

OUT

22碌F

22pF

BLON

OUT

200K

Date: 5/25/04

SP6651A High Efficiency 800mA Synchronous Buck Regulator

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SP6651AEU/TR Datasheet

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