SP6680EU/TR Datasheet

IC型號：
SP6680EU/TR
PDF描述：
High Efficiency Buck/Boost Charge Pump Regulator
文件大小：
251.55KB
PDF頁數(shù)：
12頁
芯片廠家：
SIPEX

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SP6680

High Efficiency Buck/Boost Charge Pump Regulator

鈻?/div>

Ideal For Sim Card Applications In

Cellular Phones

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Low Profile, Inductorless Regulator

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Up To 96% Power Efficiency

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+2.7V to +6.3V Input Voltage Range

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5.8V Output Voltage

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60mA Output Current

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75碌A(chǔ) Quiescent Current

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4碌A(chǔ) Shutdown Current

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External 32.768kHz Clock Input

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Three Programmable Charge Pump

Frequencies: 8.192kHz, 32.768kHz,

and 262.14kHz

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Internal Oscillator At 16.7kHz, When

CLK Pin Is Held High

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Space Saving 10-Pin

碌SOIC

Package

OUT

CF1P

C/4

CX8

CF2P

SP6680

10 Pin MSOP

CF1N

GND

CF2N

CLK

Now Available in Lead Free Packaging

DESCRIPTION

The SP6680 is a charge pump ideal for converting a +3.6V Li-Ion battery input to a +5.0V

regulated output. An input voltage range of +2.7V to +6.3V is converted to a regulated output

of 5.8V. The SP6680 device will operate at three different switching frequencies correspond-

ing to three different output resistances and load current ranges. An external 32.768kHz

nominal clock signal is used to produce three synchronized pump frequencies through the use

an internal phase look loop of an to drive the charge pump. Two control inputs can adjust the

internal pump frequency on the fly to 8.192kHz (f

INPUT

/ 4), 32.768kHz (f

INPUT

x 1), or 262.14kHz

INPUT

x 8). The charge pump configuration dynamically changes to optimize power efficiency.

At low input voltages the charge pump doubles the input while at higher inputs the output is

1.5 times the input. The SP6680 can deliver high power efficiencies up to 96% with low

quiescent currents from 75碌A(chǔ) to 800碌A(chǔ). The SP6680 is offered in a 10-Pin

碌SOIC

package.

TYPICAL APPLICATION CIRCUIT

2.2碌F

CF1P

CF1N

CF2P

CF2N

SP6200

CMOS

LDO

OUT

= +5.8V

SP6680

+3.6V

Lithium-Ion

Battery

4 5 6

4.7碌F

GND

C/4

Cx8

CLK

2.2碌F

OUT

+5.0V output

GND

2.2碌F

*All Capacitors Are Ceramic

Date: 5/25/04

SP6680 High Efficiency Buck/Boost Charge Pump Regulator

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