Datasheet > FAN5631_07

FAN5631_07

更新时间： 2024-01-08 14:55:13

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		转换器泵
页数	文件大小	规格书
13页	275K
描述
Regulated Step-Down Charge Pump DC/DC Converter

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数据手册

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FAN5631_07 数据手册

October 2007

FAN5631 / FAN5632

Regulated Step-Down Charge Pump DC/DC Converter

Features

Description

The FAN5631/FAN5632 is an advanced, third-

generation switched capacitor step-down DC/DC

converter utilizing Fairchild's proprietary ScalarPump

technology. This innovative architecture utilizes scalar

switch re-configuration and fractional switching

techniques to produce low output ripple, lower ESR

spikes, and improve efficiency over a wide load range.

90% Peak Efficiency

Low EMI

Low Ripple

Selectable Output Voltage:1.2V/1.5V for FAN5631

Efficiency Optimizer Feature for FAN5632

Input Voltage Range: 2.2V to 5.5V

Output Current: Up to 250mA

±5% Output Voltage Accuracy

30µA Operating Current

The FAN5631/FAN5632 produces a fixed regulated

output voltage from an input voltage of 2.2V to 5V.

To maximize efficiency, the FAN5631/5632 achieves

regulation by skipping pulses. Depending on load

current, the size of the switches are scaled dynamically;

consequently, current spikes and EMI are minimized.

An internal soft-start circuitry prevents excessive current

from the supply. The device is internally protected

against short-circuit and over-temperature conditions.

I_CC<1mA in Shutdown Mode

1.5MHz Operating Frequency

Shutdown Isolates Output from Input

Soft-Start Limits Inrush Current

Short-Circuit and Over-Temperature Protection

Minimum External Component Count

10-Lead 3x3mm MLP Package

The FAN5631 has a dual-output voltage feature. When

V_SELis high, V_OUTis 1.5V; and when V_SELis low, V_OUTis

1.2V.

The FAN5632 has an efficiency optimizer feature that,

when enabled, changes the switch mode configuration

from 2:1 to 1:1 at the lower threshold of V_IN. The

efficiency is maintained at its peak level over a wider

range of input voltages. In addition, V_OUTvaries from

1.2V to 1.5V as a result of this efficiency optimization. If

the efficiency optimizer is not enabled, V_OUTis regulated

to 1.5V.

Applications

Cell Phones

Handheld Computers

Portable Electronic Equipment

Core Supply to Next-Generation Processors

Low-Voltage DC Bus

Digital Cameras

Both the FAN5631 and FAN5632 are available in a 10-

lead 3x3mm MLP package.

DSP Supplies

Ordering Information

Part Number

FAN5631MPX

Package

Packing Method

Tape and Reel

10-Lead 3x3mm Molded Leadless Package (MLP)

FAN5632MPX

All packages are lead free per JEDEC: J-STD-020B standard.

FAN5631/FAN5632 Rev. 1.0.2

www.fairchildsemi.com

12 3 4 5 6 7...13

中文翻译

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与FAN5631_07相关器件

型号	品牌	获取价格	描述	数据表
FAN5631MPX	FAIRCHILD	获取价格	Regulated Step-Down Charge Pump DC/DC Converter
FAN5632	FAIRCHILD	获取价格	Regulated Step-Down Charge Pump DC/DC Converter
FAN5632MPX	FAIRCHILD	获取价格	Regulated Step-Down Charge Pump DC/DC Converter
FAN5640S7X	ONSEMI	获取价格	LED 驱动器，双高压侧恒定电流源
FAN5640S7X	FAIRCHILD	获取价格	LED Driver, 4-Segment, PDSO6, 2 X 2.20 MM, SC-70, SC-88, 6 PIN
FAN5645	FAIRCHILD	获取价格	Indicator LED Blinker with Single-Wire Interface
FAN5645MPX	FAIRCHILD	获取价格	Indicator LED Blinker with Single-Wire Interface
FAN5646	FAIRCHILD	获取价格	Programmable Indicator “Soft” LED Blinker wit
FAN5646_11	FAIRCHILD	获取价格	Programmable Indicator âSoftâ LED Blinker
FAN5646S700X	FAIRCHILD	获取价格	Programmable Indicator “Soft” LED Blinker wit

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