FAN5234MTCX_NL

更新时间： 2024-11-28 13:07:43

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		控制器
页数	文件大小	规格书
15页	387K
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中文翻译

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数据手册
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FAN5234MTCX_NL 数据手册

November 2010

FAN5234

Dual Mobile-Friendly PWM / PFM Controller

Features

Description

The FAN5234 PWM controller provides high efficiency

and regulation with an adjustable output from 0.9V to

5.5V required to power I/O, chip-sets, memory banks, or

peripherals in high-performance notebook computers,

Wide Input Voltage Range for Mobile Systems:

2V to 24V

Excellent Dynamic Response with Voltage Feed-

Forward and Average-Current-Mode Control

PDAs,

and

internet

appliances.

Synchronous

rectification and hysteretic operation at light loads

contribute to a high efficiency over a wide range of

loads. The Hysteretic Mode of operation can be

disabled if PWM Mode is desired for all load levels.

Efficiency is further enhanced by using the MOSFET’s

Lossless Current Sensing on Low-Side MOSFET or

Precision Over-Current via Sense Resistor

V_CCUnder-Voltage Lockout

Power-Good Signal

R_DS(ON)as a current-sense component.

Light-Load Hysteretic Mode Maximizes Efficiency

300KHz or 600KHz Operation

TSSOP16 Package

Feed-forward ramp modulation, average current mode

control, and internal feedback compensation provide

fast response to load transients. The FAN5234 monitors

these outputs and generates a PGOOD (power-good)

signal when the soft-start is completed and the output is

within ±10% of its set point. A built-in over-voltage

protection prevents the output voltage from going above

120% of the set point. Normal operation is automatically

restored when the over-voltage conditions cease.

Under-voltage protection latches the chip off when the

output drops below 75% of its set value after the soft-

start sequence is completed. An adjustable over-current

function monitors the output current by sensing the

voltage drop across the lower MOSFET.

Applications

Mobile PC Regulator

Handheld PC Power

Related Resources

Application Note — AN-6002 Component

Calculations and Simulation Tools for FAN5234

or FAN5236

Application Note — AN-1029 Maximum Power

Enhancement Techniques for SO-8 Power

MOSFET

Ordering Information

Operating

Part Number

Temperature

Range

Package

Packing Method

FAN5234MTCX

-10 to +85°C

16-Lead, Thin-Shrink Small-Outline Package (TSSOP)

Tape and Reel

FAN5234 • Rev. 2.0.0

www.fairchildsemi.com

12 3 4 5 6 7...15

中文翻译

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FAN5234MTCX_NL 替代型号

型号	品牌	替代类型	描述	数据表
FAN5234MTC	FAIRCHILD	功能相似	Mobile-Friendly PWM/PFM Controller

与FAN5234MTCX_NL相关器件

型号	品牌	获取价格	描述	数据表
FAN5234QSC	FAIRCHILD	获取价格	Mobile-Friendly PWM/PFM Controller
FAN5234QSC	ROCHESTER	获取价格	SWITCHING CONTROLLER, 690 kHz SWITCHING FREQ-MAX, PDSO16, QSOP-16
FAN5234QSCX	FAIRCHILD	获取价格	Mobile-Friendly PWM/PFM Controller
FAN5234QSCX	ROCHESTER	获取价格	SWITCHING CONTROLLER, 690 kHz SWITCHING FREQ-MAX, PDSO16, QSOP-16
FAN5234QSCX_NL	FAIRCHILD	获取价格	暂无描述
FAN5235	FAIRCHILD	获取价格	System Electronics Regulator for Mobile PCs
FAN5235MTC	ETC	获取价格	Analog IC
FAN5235MTCX	FAIRCHILD	获取价格	Switching Controller, Current-mode, 345kHz Switching Freq-Max, PDSO24,
FAN5235QSC	ETC	获取价格	Analog IC
FAN5236	FAIRCHILD	获取价格	Dual Mobile-Friendly DDR / Dual-output PWM Controller

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