SP6648_06 Datasheet

IC型號：
SP6648_06
PDF描述：
Ultra-low Quiescent Current, High Efficiency Boost Regulator
文件大小：
255.63KB
PDF頁數(shù)：
16頁
芯片廠家：
SIPEX

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SP6648

Ultra-low Quiescent Current,

High Efficiency Boost Regulator

FEATURES

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Ultra-low 12渭A Quiescent Current

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400mA Output Current at 2.6V Input: 3.3V

OUT

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94% Efficiency from 2 Cell to 3.3V

OUT

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Wide Input Operating Voltage: 0.85V to 4.5V

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3.3V Fixed or Adjustable Output

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Integrated Synchronous Rectifier: 0.3惟

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0.3惟 Switch

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Anti-Ringing Switch Technology

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Programmable Inductor Peak Current

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Logic Shutdown Control

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Under Voltage Lock-Out at 0.61V

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Programmable Low-Battery Detect

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Single or Dual Cell Alkaline

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Small 10 pin DFN Package and Industry

Standard 10 pin MSOP

VBATT

LBI

LBON

RLIM

SHDN

SP6648

10 Pin DFN

10 V

OUT

9 LX

8 P

GND

7 GND

6 FB

Now Available in Lead Free Packaging

APPLICATIONS

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Camera Flash LED Driver

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Wireless Mouse

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PDA's

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Pagers

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Medical Monitors

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Handheld Portable Devices

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MP3 Players

DESCRIPTION

The SP6648 is an ultra-low quiescent current, high efficiency step-up DC-DC converter ideal for

single cell, dual cell alkaline and Li-Ion battery applications such as digital still cameras, PDAs,

MP3 players, and other portable devices. The SP6648 combines the high-load efficiency

associated with PWM control, with the low quiescent current and excellent light-load efficiency

of PFM control. The SP6648 features 12渭A quiescent current, synchronous rectification, a 0.3惟

charging switch, anti-ringing inductor switch, programmable low-battery detect, under-voltage

lockout and programmable inductor peak current. The device can be controlled by a 1nA active

LOW shutdown pin.

TYPICAL APPLICATION CIRCUIT

500

10渭H

BATT

47渭F

LBI

LBON

SHDN

1.87K

BATT

LBI

LBON

LIM

OUT

LX 9

GND

GND 7

FB 6

1渭F

205K

47pF

47渭F

3.3V

OUT

Io (mA)

450

400

350

SP6648

300

250

200

150

100

Vout=3.3V, Ipk=0.85A

Vout=5.0V, Ipk=0.85A

1.5

2.0

2.5

3.0

Vin (V)

3.5

4.0

4.5

5 SHDN

124K

1.0

Maximum Load Current in Operation

Date: 6/7/06 Rev B

SP6648 Ultra-low Quiescent Current, High Efficiency Boost Regulator

漏 2006 Sipex Corporation

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