FAN5233

更新时间： 2024-09-26 22:50:59

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		稳压器电子 PC
页数	文件大小	规格书
15页	390K
描述
System Electronics Regulator for Mobile PCs

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中文翻译

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FAN5233 数据手册

www.fairchildsemi.com

FAN5233

System Electronics Regulator for Mobile PCs

Features

Description

• 5.4V to 24V input voltage range

• Five regulated outputs:

• 5V @ 5A (PWM)

The FAN5233 is a high efﬁciency and high precision

multiple-output voltage regulator for notebook PC and other

similar battery-powered applications. It integrates three

pulse-width modulated (PWM) switching regulator

controllers and one linear regulator to convert 5.4V-to-24V

notebook battery power into the voltage used by the circuitry

that surrounds the microprocessor in these systems.

• 3.3V @ 5A (PWM)

• 5V @ 50mA Always On (Linear)

• 12V/Adjustable @ 120mA Boost (PWM)

• >96% efﬁciency

• Hysteretic mode for light loads

• PWM mode for normal loads

• Main regulators switch out of phase

• 300kHz ﬁxed frequency switching

• RDS(ON) current sense over-current

• Reduced BOM; Max. efﬁciency

• Optional current sense resistor for precision over-current

detect

• Power Good signal for all voltages

• Input under-voltage lock-out (UVLO)

• Thermal shutdown

• ACPI compliant

• 24-pin TSSOP

The two primary PWM controllers in the FAN5233 use

synchronous-mode rectiﬁcation to provide 3.3V and 5V at

over 5A each. They switch out-of-phase to minimize input

ripple-current. Utilization of both input and output voltage

feedback in a current-mode control allows for fast and stable

loop response over a wide range of input and output

variations. PWM control in normal operation and hysteretic

control under light load provides efﬁciency of greater than

95% over a wide range of input and output variations. The

third PWM controller generates 12V at 120mA. A propri-

etary technology is used for sensing of output current using

the RDS(ON) of the external MOSFETs, eliminating exter-

nal current sense resistors which saves board space and

reduces BOM cost.

Applications

• Notebook PCs

• Web tablets

• Battery-powered instruments

One integrated linear regulator provides stand-by

ALWAYS-ON power at 5V for light (50mA) loads.

Additional FAN5233 features include over-voltage, under-

voltage, and over-current monitors and thermal shutdown

protection. A single Power-Good signal is issued when soft

start is completed and all outputs are within 10% of their

settings.

REV. 1.0.6 1/22/02

12 3 4 5 6 7...15

中文翻译

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与FAN5233相关器件

型号	品牌	获取价格	描述	数据表
FAN5233MTC	FAIRCHILD	获取价格	Analog IC
FAN5233MTCX	FAIRCHILD	获取价格	Analog IC
FAN5234	FAIRCHILD	获取价格	Mobile-Friendly PWM/PFM Controller
FAN5234_10	FAIRCHILD	获取价格	Dual Mobile-Friendly PWM / PFM Controller
FAN5234MTC	FAIRCHILD	获取价格	Mobile-Friendly PWM/PFM Controller
FAN5234MTC	ROCHESTER	获取价格	SWITCHING CONTROLLER, 690 kHz SWITCHING FREQ-MAX, PDSO16, TSSOP-16
FAN5234MTCX	FAIRCHILD	获取价格	Mobile-Friendly PWM/PFM Controller
FAN5234MTCX	ROCHESTER	获取价格	SWITCHING CONTROLLER, 690 kHz SWITCHING FREQ-MAX, PDSO16, TSSOP-16
FAN5234MTCX	ONSEMI	获取价格	PWM/PFM 控制器，宽输入电压范围
FAN5234MTCX_NL	FAIRCHILD	获取价格	暂无描述

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