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  • FPF2125图
  • 深圳市拓亿芯电子有限公司

     该会员已使用本站12年以上
  • FPF2125 现货库存
  • 数量12500 
  • 厂家FSC可看货 
  • 封装SOT-23-3 
  • 批号23+ 
  • 只做原装现货假一罚十
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    QQ:2924695115QQ:2924695115 复制
  • 0755-82702619 QQ:2103443489QQ:2924695115
  • FPF2125图
  • 深圳市欧立现代科技有限公司

     该会员已使用本站12年以上
  • FPF2125 现货库存
  • 数量6800 
  • 厂家FAIRC 
  • 封装SOT23-5 
  • 批号24+ 
  • 全新原装现货,欢迎询购!
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    QQ:2216987084QQ:2216987084 复制
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  • FPF2125图
  • 深圳市恒达亿科技有限公司

     该会员已使用本站12年以上
  • FPF2125 现货库存
  • 数量5000 
  • 厂家FAIRCHILD 
  • 封装SOT23-5 
  • 批号25+ 
  • 全新原装,欢迎查询
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  • 0755-82772189 QQ:867789136QQ:1245773710
  • FPF2125图
  • 深圳市高捷芯城科技有限公司

     该会员已使用本站11年以上
  • FPF2125 现货库存
  • 数量7178 
  • 厂家onsemi(安森美) 
  • 封装SOT-23-5 
  • 批号23+ 
  • 百分百原装正品,可原型号开票
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    QQ:3007947087QQ:3007947087 复制
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  • FPF2125图
  • 深圳市芯脉实业有限公司

     该会员已使用本站11年以上
  • FPF2125 现货库存
  • 数量26800 
  • 厂家on 
  • 封装SOT-23-5 
  • 批号22+ 
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  • 0755-84507451 QQ:1435424310
  • FPF2125图
  • 深圳市顺鑫诚电子科技有限公司

     该会员已使用本站14年以上
  • FPF2125 现货库存
  • 数量27000 
  • 厂家FAIRCHIL 
  • 封装SOT23-5 
  • 批号18+ 
  • 原装货价格优惠欢迎来电查询
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    QQ:449551876QQ:449551876 复制
  • 0755-29486608 QQ:1533095505QQ:449551876
  • FPF2125图
  • 深圳市芯脉实业有限公司

     该会员已使用本站11年以上
  • FPF2125 现货库存
  • 数量6980 
  • 厂家FAIRCHILD 
  • 封装SOT23-5 
  • 批号22+ 
  • 新到现货、一手货源、当天发货、bom配单
  • QQ:2881512844QQ:2881512844 复制
  • 075584507705 QQ:2881512844
  • FPF2125图
  • 集好芯城

     该会员已使用本站13年以上
  • FPF2125
  • 数量18654 
  • 厂家FAIRCHILD/仙童 
  • 封装SOT23-5 
  • 批号最新批次 
  • 原装原厂 现货现卖
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    QQ:3008092965QQ:3008092965 复制
  • 0755-83239307 QQ:3008092965QQ:3008092965
  • FPF2125 Pb-free图
  • 北京中其伟业科技有限公司

     该会员已使用本站16年以上
  • FPF2125 Pb-free
  • 数量8850 
  • 厂家Fairchild 
  • 封装 
  • 批号16+ 
  • 特价,原装正品,绝对公司现货库存,原装特价!
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  • 010-62104891 QQ:2880824479
  • FPF2125图
  • 深圳市欧立现代科技有限公司

     该会员已使用本站12年以上
  • FPF2125
  • 数量3800 
  • 厂家FAIRCHILD 
  • 封装SC-74A,SOT-753 
  • 批号24+ 
  • 授权分销 现货热卖
  • QQ:1950791264QQ:1950791264 复制
    QQ:2216987084QQ:2216987084 复制
  • 0755-83222787 QQ:1950791264QQ:2216987084
  • FPF2125图
  • 北京齐天芯科技有限公司

     该会员已使用本站15年以上
  • FPF2125
  • 数量5000 
  • 厂家ON Semiconductor 
  • 封装SC-74A,SOT-753 
  • 批号2024+ 
  • 全新原装、现货库存,欢迎询价
  • QQ:2880824479QQ:2880824479 复制
    QQ:1344056792QQ:1344056792 复制
  • 010-62104931 QQ:2880824479QQ:1344056792
  • FPF2125图
  • 深圳市恒益昌科技有限公司

     该会员已使用本站6年以上
  • FPF2125
  • 数量5000 
  • 厂家FAIRCHILD 
  • 封装SOT23-5 
  • 批号25+ 
  • 原装正品长期供货
  • QQ:3336148967QQ:3336148967 复制
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  • 0755-82723761 QQ:3336148967QQ:974337758
  • FPF2125图
  • 北京元坤伟业科技有限公司

     该会员已使用本站17年以上
  • FPF2125
  • 数量5000 
  • 厂家Texas Instruments 
  • 封装贴/插片 
  • 批号2024+ 
  • 百分百原装正品,现货库存
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    QQ:1594462451QQ:1594462451 复制
  • 010-62104791 QQ:857273081QQ:1594462451
  • FPF2125图
  • 北京齐天芯科技有限公司

     该会员已使用本站15年以上
  • FPF2125
  • 数量5000 
  • 厂家ON Semiconductor 
  • 封装SC-74A,SOT-753 
  • 批号2024+ 
  • 全新原装、现货库存,欢迎询价
  • QQ:2880824479QQ:2880824479 复制
    QQ:1344056792QQ:1344056792 复制
  • 010-62104931 QQ:2880824479QQ:1344056792
  • FPF2125图
  • 深圳市晶美隆科技有限公司

     该会员已使用本站14年以上
  • FPF2125
  • 数量11631 
  • 厂家FAIRCHILD/仙童 
  • 封装SOT23-5 
  • 批号23+ 
  • 全新原装正品现货热卖
  • QQ:2885348339QQ:2885348339 复制
    QQ:2885348317QQ:2885348317 复制
  • 0755-82519391 QQ:2885348339QQ:2885348317
  • FPF2125图
  • 深圳市正信鑫科技有限公司

     该会员已使用本站12年以上
  • FPF2125
  • 数量5321 
  • 厂家Fairchild 
  • 封装原厂封装 
  • 批号22+ 
  • 原装正品★真实库存★价格优势★欢迎来电洽谈
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  • 0755-22655674 QQ:1686616797QQ:2440138151
  • FPF2125图
  • 深圳市惊羽科技有限公司

     该会员已使用本站11年以上
  • FPF2125
  • 数量9328 
  • 厂家ON-安森美 
  • 封装SOT-23-5 
  • 批号▉▉:2年内 
  • ▉▉¥8.9元一有问必回一有长期订货一备货HK仓库
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  • 131-4700-5145---Q-微-恭-候---有-问-秒-回 QQ:43871025
  • FPF2125图
  • 北京元坤伟业科技有限公司

     该会员已使用本站17年以上
  • FPF2125
  • 数量5000 
  • 厂家FAIRCHILD 
  • 封装SOT153 
  • 批号16+ 
  • 百分百原装正品,现货库存
  • QQ:857273081QQ:857273081 复制
    QQ:1594462451QQ:1594462451 复制
  • 010-62106431 QQ:857273081QQ:1594462451
  • FPF2125图
  • 深圳市华芯盛世科技有限公司

     该会员已使用本站13年以上
  • FPF2125
  • 数量865000 
  • 厂家FAIRCHILD/仙童 
  • 封装21+ 
  • 批号最新批号 
  • 一级代理,原装特价现货!
  • QQ:2881475757QQ:2881475757 复制
  • 0755-83225692 QQ:2881475757
  • FPF2125图
  • 北京耐芯威科技有限公司

     该会员已使用本站12年以上
  • FPF2125
  • 数量5000 
  • 厂家ON Semiconductor 
  • 封装SC-74A,SOT-753 
  • 批号21+ 
  • 全新原装、现货库存,欢迎询价
  • QQ:2880824479QQ:2880824479 复制
    QQ:1344056792QQ:1344056792 复制
  • 96-010-62104931 QQ:2880824479QQ:1344056792
  • FPF2125图
  • 深圳市得捷芯城科技有限公司

     该会员已使用本站11年以上
  • FPF2125
  • 数量200 
  • 厂家FAIRCHILD/仙童 
  • 封装NA/ 
  • 批号23+ 
  • 优势代理渠道,原装正品,可全系列订货开增值税票
  • QQ:3007977934QQ:3007977934 复制
    QQ:3007947087QQ:3007947087 复制
  • 0755-82546830 QQ:3007977934QQ:3007947087
  • FPF2125图
  • 深圳市美思瑞电子科技有限公司

     该会员已使用本站12年以上
  • FPF2125
  • 数量12245 
  • 厂家FAIRCHILD/仙童 
  • 封装SOT23-5 
  • 批号22+ 
  • 现货,原厂原装假一罚十!
  • QQ:2885659458QQ:2885659458 复制
    QQ:2885657384QQ:2885657384 复制
  • 0755-83952260 QQ:2885659458QQ:2885657384
  • FPF2125图
  • 北京耐芯威科技有限公司

     该会员已使用本站13年以上
  • FPF2125
  • 数量5000 
  • 厂家ON Semiconductor 
  • 封装SC-74A,SOT-753 
  • 批号21+ 
  • 全新原装、现货库存,欢迎询价
  • QQ:2880824479QQ:2880824479 复制
    QQ:1344056792QQ:1344056792 复制
  • 86-010-010-62104931 QQ:2880824479QQ:1344056792
  • FPF2125图
  • 深圳市华斯顿电子科技有限公司

     该会员已使用本站16年以上
  • FPF2125
  • 数量17225 
  • 厂家FAIRCHILD 
  • 封装SOT23-5 
  • 批号2023+ 
  • 绝对原装正品全新进口深圳现货
  • QQ:1002316308QQ:1002316308 复制
    QQ:515102657QQ:515102657 复制
  • 深圳分公司0755-83777708“进口原装正品专供” QQ:1002316308QQ:515102657
  • FPF2125图
  • 深圳市中杰盛科技有限公司

     该会员已使用本站14年以上
  • FPF2125
  • 数量12000 
  • 厂家Fairchild 
  • 封装SOT-23-5 
  • 批号24+ 
  • 【原装优势★★★绝对有货】
  • QQ:409801605QQ:409801605 复制
  • 0755-22968359 QQ:409801605
  • FPF2125图
  • 深圳市三得电子有限公司

     该会员已使用本站15年以上
  • FPF2125
  • 数量91752 
  • 厂家FAIRCHILD 
  • 封装SOT23-05 
  • 批号2024 
  • 深圳原装现货库存,欢迎咨询合作
  • QQ:414322027QQ:414322027 复制
    QQ:565106636QQ:565106636 复制
  • 15026993318 QQ:414322027QQ:565106636
  • FPF2125图
  • 深圳市晶美隆科技有限公司

     该会员已使用本站14年以上
  • FPF2125
  • 数量11530 
  • 厂家Fairchild Semiconductor 
  • 封装SOT-23-5 
  • 批号SC-74A 
  • 23+
  • QQ:2885348317QQ:2885348317 复制
    QQ:2885348339QQ:2885348339 复制
  • 0755-83209630 QQ:2885348317QQ:2885348339
  • FPF2125图
  • 深圳市硅诺电子科技有限公司

     该会员已使用本站8年以上
  • FPF2125
  • 数量
  • 厂家FSC 
  • 封装原厂指定分销商,有意请来电或QQ洽谈 
  • 批号17+ 
  • QQ:1091796029QQ:1091796029 复制
    QQ:916896414QQ:916896414 复制
  • 0755-82772151 QQ:1091796029QQ:916896414
  • FPF2125图
  • 深圳市创芯联科技有限公司

     该会员已使用本站9年以上
  • FPF2125
  • 数量15000 
  • 厂家FSC 
  • 封装SOT-23 
  • 批号24+ 
  • 原厂货源/正品保证,诚信经营,欢迎询价
  • QQ:1219895042QQ:1219895042 复制
    QQ:3061298850QQ:3061298850 复制
  • 0755-23606513 QQ:1219895042QQ:3061298850
  • FPF2125图
  • 昂富(深圳)电子科技有限公司

     该会员已使用本站4年以上
  • FPF2125
  • 数量53526 
  • 厂家FAIRCHILD/仙童 
  • 封装NA 
  • 批号23+ 
  • 一站式BOM配单,短缺料找现货,怕受骗,就找昂富电子.
  • QQ:GTY82dX7
  • 0755-23611557【陈妙华 QQ:GTY82dX7
  • FPF2125图
  • 深圳市芯脉实业有限公司

     该会员已使用本站11年以上
  • FPF2125
  • 数量26800 
  • 厂家on 
  • 封装SOT-23-5 
  • 批号22+ 
  • 新到现货、一手货源、当天发货、bom配单
  • QQ:1435424310QQ:1435424310 复制
  • 0755-84507451 QQ:1435424310
  • FPF2125图
  • 深圳市富莱微科技有限公司

     该会员已使用本站6年以上
  • FPF2125
  • 数量6327 
  • 厂家ON Semiconductor 
  • 封装SC-74A, SOT-753 
  • 批号20+ 
  • 进口原装,公司现货
  • QQ:1968343307QQ:1968343307 复制
    QQ:2885835292QQ:2885835292 复制
  • 0755-83210149 QQ:1968343307QQ:2885835292
  • FPF2125图
  • 深圳市芯柏然科技有限公司

     该会员已使用本站7年以上
  • FPF2125
  • 数量26800 
  • 厂家on 
  • 封装SOT-23-5 
  • 批号22+ 
  • 授权代理直销,原厂原装现货,假一罚十,特价销售
  • QQ:287673858QQ:287673858 复制
  • 0755-82533534 QQ:287673858
  • FPF2125图
  • 深圳市凯睿晟科技有限公司

     该会员已使用本站10年以上
  • FPF2125
  • 数量30000 
  • 厂家FAIRCHILD/仙童 
  • 封装SOT23-5 
  • 批号24+ 
  • 百域芯优势 实单必成 可开13点增值税
  • QQ:2885648621QQ:2885648621 复制
  • 0755-23616725 QQ:2885648621
  • FPF2125图
  • 深圳市亿智腾科技有限公司

     该会员已使用本站8年以上
  • FPF2125
  • 数量16680 
  • 厂家FAIRCHILD 
  • 封装SOT23-5 
  • 批号16+ 
  • 假一赔十★全新原装现货★★特价供应★工厂客户可放款
  • QQ:799387964QQ:799387964 复制
    QQ:2777237833QQ:2777237833 复制
  • 0755-82566711 QQ:799387964QQ:2777237833
  • FPF2125图
  • 上海振基实业有限公司

     该会员已使用本站13年以上
  • FPF2125
  • 数量1492 
  • 厂家Fairchild 
  • 封装原厂封装 
  • 批号23+ 
  • 全新原装现货/另有约30万种现货,欢迎来电!
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    QQ:1985476892QQ:1985476892 复制
  • 021-59159268 QQ:330263063QQ:1985476892
  • FPF2125图
  • 深圳市巨辉通科技有限公司

     该会员已使用本站14年以上
  • FPF2125
  • 数量6750 
  • 厂家FAIRCHILD/仙童 
  • 封装SOT23-5 
  • 批号2020+ 
  • 专业代理限流开关IC,公司优势产品
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    QQ:839052285QQ:839052285 复制
  • 0755-83202636;83227655 QQ:905208275QQ:839052285

产品型号FPF2125的概述

FPF2125芯片概述 FPF2125是一款先进的电源管理芯片,属于高效、低功耗的电源开关系列。该芯片由知名的半导体制造商提供,广泛用于各种电子应用中,如移动设备、消费电子以及工业设备。FPF2125的设计目标是提供高效率的电源管理解决方案,以适应现代电子产品对能效和空间的严格要求。 FPF2125芯片采用先进的CMOS工艺设计,具有低导通电阻和高达2A的额定输出电流能力。这使得其在提供电源时能够保持较低的功耗,同时避免过度发热,从而提高系统的整体可靠性。FPF2125不仅能够在多种输入电压范围下工作,还支持广泛的输出电压调节选项,这使得它可以灵活适用于不同的工作环境和需求。 FPF2125详细参数 FPF2125的主要参数包括: - 输入电压范围:2.5V 至 5.5V - 输出电流能力:最大2A - 导通电阻:通常为70mΩ(在VGS=4.5V条件下) - 开关频率:可调,通常在2...

产品型号FPF2125的Datasheet PDF文件预览

August 2005  
FPF2123-FPF2125  
IntelliMAX™ Advanced Load Management Products  
Features  
General Description  
„ 1.8 to 5.5V Input Voltage Range  
The FPF2123, FPF2124, and FPF2125 are a series of load  
switches which provides full protection to systems and loads  
which may encounter large current conditions. These devices  
contain a 0.125current-limited P-channel MOSFET which can  
operate over an input voltage range of 1.8-5.5V. The current  
limit is settable using an external resistor. Internally, current is  
prevented from flowing when the MOSFET is off and the output  
voltage is higher than the input voltage. Switch control is by a  
logic input (ON) capable of interfacing directly with low voltage  
control signals. Each part contains thermal shutdown protection  
which shuts off the switch to prevent damage to the part when a  
continuous over-current condition causes excessive heating.  
„ Controlled Turn-On  
„ 0.15-1.5A Adjustable Current Limit  
„ Undervoltage Lockout  
„ Thermal Shutdown  
„ <2uA Shutdown Current  
„ Auto Restart  
„ Fast Current limit Response Time  
„ 3us to Moderate Over Currents  
„ 20ns to Hard Shorts  
„ Fault Blanking  
When the switch current reaches the current limit, the parts  
operate in a constant-current mode to prohibit excessive  
currents from causing damage. For the FPF2123 and FPF2124  
if the constant current condition still persists after 10ms, these  
parts will shut off the switch. The FPF2123 has an auto-restart  
feature which will turn the switch on again after 160ms if the ON  
pin is still active. The FPF2124 does not have this auto-restart  
feature so the switch will remain off after a current limit fault until  
the ON pin is cycled. The FPF2125 will not turn off after a  
current limit fault, but will rather remain in the constant current  
mode indefinitely. The minimum current limit is 150mA.  
„ Reverse Current Blocking  
Applications  
„ PDAs  
„ Cell Phones  
„ GPS Devices  
„ MP3 Players  
„ Digital Cameras  
„ Peripheral Ports  
„ Hot Swap Supplies  
These parts are available in a space-saving 5 pin SOT23  
package  
Typical Application Circuit  
TO LOAD  
VOUT  
VIN  
FPF2123 - FPF2125  
OFF ON  
ON  
ISET  
GND  
©2005 Fairchild Semiconductor Corporation  
FPF2123-FPF2125 Rev. C  
1
www.fairchildsemi.com  
Functional Block Diagram  
VIN  
UVLO  
REVERSE  
CURRENT  
BLOCKING  
CONTROL  
LOGIC  
ON  
CURRENT  
LIMIT  
VOUT  
ISET  
THERMAL  
SHUTDOWN  
GND  
Pin Configuration  
VIN  
5
4
VOUT  
1
GND  
ON  
2
3
ISET  
SOT23-5  
Pin Description  
Pin  
Name  
VIN  
Function  
1
2
3
4
5
Supply Input: Input to the power switch and the supply voltage for the IC  
GND  
ON  
Ground  
ON Control Input  
ISET  
VOUT  
Current Limit Set Input: A resistor from ISET to ground sets the current limit for the switch.  
Switch Output: Output of the power switch  
2
www.fairchildsemi.com  
FPF2123-FPF2125 Rev. C  
Absolute Maximum Ratings  
Parameter  
Min.  
Max.  
6
Unit  
V
VIN, VOUT, ON, ISET to GND  
Power Dissipation @ TA = 25°C (note 1)  
Operating Temperature Range  
Storage Temperature  
-0.3  
667  
125  
150  
150  
mW  
°C  
-40  
-65  
°C  
Thermal Resistance, Junction to Ambient  
Electrostatic Discharge Protection  
°C/W  
V
HBM  
MM  
4000  
400  
V
Recommended Operating Range  
Parameter  
Min.  
1.8  
Max.  
5.5  
Unit  
V
VIN  
Ambient Operating Temperature, TA  
-40  
85  
°C  
Electrical Characteristics  
VIN =1.8to5.5V,TA =-40to+85°Cunlessotherwisenoted. TypicalvaluesareatVIN =3.3VandTA = 25°C.  
Parameter  
Symbol  
Conditions  
Min.  
Typ.  
Max Units  
Basic Operation  
Operating Voltage  
Quiescent Current  
VIN  
1.8  
5.5  
V
IQ  
IOUT = 0mA  
VIN = 1.8 to 3.3V  
VIN = 3.3 to 5.5V  
75  
80  
µA  
120  
2
Shutdown Current  
ISHDN  
µA  
µA  
µA  
m  
Reverse Block Leakage Current  
Latch-Off Current  
IBLOCK  
1
ILATCHOFF FPF2124  
50  
On-Resistance  
RON  
VIH  
VIL  
TA = 25°C, IOUT = 50mA  
TA = -40 to +85°C, IOUT = 50mA  
125  
150  
160  
ON Input Logic High Voltage (ON)  
ON Input Logic Low Voltage  
VIN = 1.8V  
VIN = 5.5V  
VIN = 1.8V  
VIN = 5.5V  
0.75  
1.30  
V
V
0.5  
1.0  
1
ON Input Leakage  
Off Switch Leakage  
Protections  
V
ON = VIN or GND  
µA  
µA  
ISWOFF  
VON = 0V, VOUT = 0V  
1
Current Limit  
ILIM  
VIN = 3.3V, VOUT = 3.0V,  
600  
800  
1000  
mA  
RSET=576Ω  
Min. Current Limit  
Thermal Shutdown  
ILIM(min.)  
VIN = 3.3V, VOUT = 3.0V  
Shutdown Threshold  
Return from Shutdown  
Hysteresis  
150  
140  
130  
10  
mA  
°C  
Under Voltage Shutdown  
UVLO  
VIN Increasing  
1.5  
1.6  
50  
1.7  
V
Under Voltage Shutdown Hysteresis  
mV  
3
www.fairchildsemi.com  
FPF2123-FPF2125 Rev. C  
Electrical Characteristics Cont.  
VIN = 1.8 to 5.5V, TA = -40 to +85°C unless otherwise noted. Typical values are at VIN = 3.3V and TA = 25°C.  
Parameter  
Symbol  
Conditions  
Min.  
Typ.  
Max Units  
Dynamic  
Turn on time  
tON  
RL=500, CL=0.1uF  
25  
70  
µs  
µs  
µs  
µs  
Turn off time  
tOFF  
tR  
RL=500, CL=0.1uF  
RL=500, CL=0.1uF  
RL=500, CL=0.1uF  
FPF2123, FPF2124  
FPF2123  
VOUT Rise Time  
VOUT Fall Time  
Over Current Blanking Time  
Auto-Restart Time  
12  
tF  
200  
10  
tBLANK  
tRESTART  
5
20  
ms  
ms  
80  
160  
NA  
3
320  
FPF2124, FPF2125  
Short Circuit Response Time  
VIN = VON = 3.3V. Moderate  
Over-Current Condition.  
µs  
ns  
V
IN = VON = 3.3V. Hard Short.  
20  
Note 1: Package power dissipation on 1square inch pad, 2 oz copper board.  
4
www.fairchildsemi.com  
FPF2123-FPF2125 Rev. C  
Typical Characteristics  
95  
85  
75  
65  
55  
45  
76  
VON = V  
IN  
74  
72  
70  
68  
66  
64  
62  
VIN = 5.5V  
VIN = 3.3V  
VIN = 1.8V  
-40  
-15  
TJ, JUNCTION TEMPERATURE (oC)  
Figure 2. Quiescent Current vs. Temperature  
10  
35  
60  
85  
1.5  
2
2.5  
3
3.5  
4
4.5  
5
5.5  
6
SUPPLY VOLTAGE (V)  
Figure 1. Quiescent Current vs. Input Voltage  
500  
450  
400  
350  
300  
250  
200  
150  
100  
50  
2500  
I_SHDN  
I_SWOFF  
2000  
1500  
1000  
500  
0
VIN = 5.5V  
V
IN = 5.5V  
VIN = 3.3V  
VIN = 3.3V  
0
-40  
-15  
10  
35  
60  
85  
-40  
-15  
10  
35  
60  
85  
TJ, JUNCTION TEMPERATURE (oC)  
TJ, JUNCTION TEMPERATURE (oC)  
Figure 3. ISHUTDOWN Current vs. Temperature  
Figure 4. ISWITCH-OFF Current vs. Temperature  
0.20  
1.4  
1.2  
1
0.18  
0.16  
0.14  
0.12  
0.10  
0.08  
0.06  
0.04  
0.02  
0.00  
VIN = 5.5V  
0.8  
0.6  
0.4  
0.2  
0
VIN = 3.3V  
-40  
-15  
10  
35  
60  
85  
1.5  
2.0  
2.5  
3.0  
3.5  
4.0  
4.5  
5.0  
5.5  
6.0  
TJ, JUNCTION TEMPERATURE (oC)  
SUPPLY VOLTAGE (V)  
Figure 5. Reverse Current vs. VOUT  
Figure 6. Reverse Current vs. Temperature  
5
www.fairchildsemi.com  
FPF2123-FPF2125 Rev. C  
Typical Characteristics  
900  
850  
800  
750  
700  
55  
54  
53  
52  
51  
50  
49  
48  
47  
46  
45  
V
IN - VOUT = 0.3V  
RSET = 576Ω  
-40  
-15  
10  
35  
60  
85  
1.5  
2
2.5  
3
3.5  
4
4.5  
5
5.5  
6
TJ, JUNCTION TEMPERATURE (oC)  
VIN, INPUT VOLTAGE (V)  
Figure 7. ILATCH-OFF Current vs. Temperature  
Figure 8. Current Limit vs. Input Voltage  
1600  
1200  
800  
400  
0
900  
RSET = 576Ω  
850  
800  
750  
200  
800  
1400  
RSET, (Ohms)  
Figure 10. Current Limit vs. Rest  
2000  
2600  
3200  
-40  
-15  
10  
35  
60  
85  
TJ, JUNCTION TEMPERATURE (oC)  
Figure 9. Current Limit vs. Temperature  
1.5  
1.2  
0.9  
0.6  
0.3  
0
170  
160  
150  
140  
130  
120  
110  
100  
90  
1
2
3
4
5
6
1
2
3
4
5
6
VIN, Input Voltage (V)  
VIN, Input Voltage (V)  
Figure 11.  
VIH vs. VIN  
Figure 12. RON vs. VIN  
6
www.fairchildsemi.com  
FPF2123-FPF2125 Rev. C  
Typical Characteristics  
100  
200  
180  
ILOAD = 10mA  
VCC = 3.3V  
TD(OFF)  
VIN = 1.8V  
160  
140  
VIN = 3.3V  
120  
100  
80  
TD(ON)  
VIN = 5.5V  
60  
10  
-40  
-40  
-15  
10  
35  
60  
85  
-15  
10  
35  
60  
85  
TJ, JUNCTION TEMPERATURE (oC)  
TJ, JUNCTION TEMPERATURE (oC)  
Figure 13. R(ON) vs. Temperature  
Figure 14. TON/TOff vs. Temperature  
14  
13  
12  
11  
10  
9
1000  
100  
10  
ILOAD = 10mA  
VCC = 3.3V  
T(FALL)  
T(RISE)  
1
8
-40  
-15  
10  
35  
60  
85  
-40  
-15  
10  
35  
60  
85  
TJ, JUNCTION TEMPERATURE (oC)  
TJ, JUNCTION TEMPERATURE (oC)  
Figure 15. TRISE/TFALL vs. Temperature  
Figure 16. TBLANK vs. Temperature  
200  
190  
180  
170  
160  
150  
140  
130  
120  
VDRV  
2V/DIV  
VOUT  
2V/DIV  
IOUT  
400mA/DIV  
-40  
-15  
10  
35  
60  
85  
TJ, JUNCTION TEMPERATURE (oC)  
Figure 17. TRESTART vs. Temperature  
Figure 18. TBLANK Response  
7
www.fairchildsemi.com  
FPF2123-FPF2125 Rev. C  
Typical Characteristics  
VDRV  
2V/DIV  
VON  
2V/DIV  
VOUT  
2V/DIV  
IOUT  
10mA/DIV  
IOUT  
400mA/DIV  
Figure 19. TRESTART Response  
Figure 20. TON Response  
VON  
2V/DIV  
VIN  
2V/DIV  
IOUT  
IOUT  
10mA/DIV  
4A/DIV  
VOUT  
2V/DIV  
Figure 21. TOFF Response  
Figure 22. Short Circuit Response Time  
(Output Shorted to GND)  
VIN  
2V/DIV  
V
IN=VON  
2V/DIV  
VON  
2V/DIV  
IOUT  
400mA/DIV  
IOUT  
400mA/DIV  
Figure 23. Current Limit Response Time  
(Switch power up to hard short)  
Figure 24. Current Limit Response Time  
(Output Shorted to GND by 2.2Ω, moderate short)  
8
www.fairchildsemi.com  
FPF2123-FPF2125 Rev. C  
Under-Voltage Lockout  
Description of Operation  
The under-voltage lockout turns-off the switch if the input  
voltage drops below the under-voltage lockout threshold. With  
the ON pin active, the input voltage rising above the  
under-voltage lockout threshold will cause a controlled turn-on  
of the switch which limits current over-shoots.  
The FPF2123, FPF2124, and FPF2125 are current limited  
switches that protect systems and loads which can be damaged  
or disrupted by the application of high currents. The core of  
each device is a 0.125P-channel MOSFET and a controller  
capable of functioning over a wide input operating range of  
1.8-5.5V. The controller protects against system malfunctions  
through current limiting under-voltage lockout and thermal  
shutdown. The current limit is adjustable from 150mA to 1.5A  
through the selection of an external resistor.  
Thermal Shutdown  
The thermal shutdown protects the die from internally or  
externally generated excessive temperatures.  
During an  
over-temperature condition the switch is turned-off. The switch  
automatically turns-on again if the temperature of the die drops  
below the threshold temperature.  
On/OffControl  
The ON pin controls the state of the switch. When ON is high,  
the switch is in the on state. Activating ON continuously holds  
the switch in the on state so long as there is no fault. For all  
versions, an under-voltage on VIN or a junction temperature in  
excess of 140°C overrides the ON control to turn off the switch.  
In addition, excessive currents will cause the switch to turn off in  
the FPF2123 and FPF2124. The FPF2123 has an Auto-Restart  
feature which will automatically turn the switch on again after  
160ms. For the FPF2124, the ON pin must be toggled to  
turn-on the switch again. The FPF2125 does not turn off in  
response to an over current condition but instead remains  
operating in a constant current mode so long as ON is active  
and the thermal shutdown or under-voltage lockout have not  
activated.  
Current Limiting  
The current limit ensures that the current through the switch  
doesn't exceed a maximum value while not limiting at less than  
a minimum value. The current at which the parts will limit is  
adjustable through the selection of an external resistor  
connected to ISET. Information for selecting the resistor is  
found in the Application Info section. The FPF2123 and  
FPF2124 have a blanking time of 10ms, nominally, during which  
the switch will act as a constant current source. At the end of  
the blanking time, the switch will be turned-off. The FPF2125  
has no current limit blanking period so it will remain in a  
constant current state until the ON pin is deactivated or the  
thermal shutdown turns-off the switch.  
Ordering Information  
Current Limit  
Auto-Restart  
Current Limit  
[mA]  
Blanking Time  
[ms]  
Time  
[ms]  
ON Pin  
Activity  
Part  
Top Mark  
2123  
FPF2123  
FPF2124  
FPF2125  
0.15 - 1.5A  
0.15 - 1.5A  
0.15 - 1.5A  
5/10/20  
5/10/20  
Infinite  
80/160/320  
Active HI  
Active HI  
Active HI  
NA  
NA  
2124  
2125  
9
www.fairchildsemi.com  
FPF2123-FPF2125 Rev. C  
Application Information  
Typical Application  
LOAD  
R2 = 499Ω  
VOUT  
VIN  
FPF2123- FPF2125  
Battery  
1.8V-5.5V  
OFF ON  
C1 = 10µF  
ON  
ISET  
GND  
C2 = 0.1µF  
R1 = 100KΩ  
Setting Current Limit  
Current Limit Various R  
Values  
SET  
The FPF2123, FPF2124, and FPF2125 have a current limit  
which is set with an external resistor connected between ISET  
and GND. This resistor is selected by using the following  
equation,  
RSET  
[]  
Min. Current  
Limit  
Typ. Current  
Limit  
Max. Current  
Limit  
[mA]  
[mA]  
[mA]  
309  
340  
1120  
1010  
920  
840  
760  
690  
630  
600  
570  
470  
390  
320  
260  
180  
110  
1490  
1350  
1230  
1120  
1010  
920  
1860  
1690  
1540  
1400  
1270  
1150  
1050  
1000  
950  
460  
R
=
(1)  
SET  
I LIM  
374  
RSET is in Ohms and that of ILIM is Amps  
412  
The table below can also be used to select RSET  
.
A typical  
453  
application would be the 500mA current that is required by a  
single USB port. Using the table below an appropriate selection  
for the RSET resistor would be 604. This will ensure that the  
port load could draw 570mA, but not more than 950mA.  
Likewise for a dual port system, an RSET of 340would always  
deliver at least 1120mA and never more than 1860mA.  
499  
549  
840  
576  
800  
604  
760  
732  
630  
790  
Input Capacitor  
887  
520  
650  
To limit the voltage drop on the input supply caused by transient  
in-rush currents when the switch turns-on into a discharged load  
capacitance or a short-circuit, a capacitor needs to be placed  
between VIN and GND. A 0.1uF ceramic capacitor, CIN, placed  
close to the pins is usually sufficient. Higher values of CIN can  
be used to further reduce the voltage drop.  
1070  
1300  
1910  
3090  
430  
540  
350  
440  
240  
300  
150  
190  
Output Capacitor  
Power Dissipation  
A 0.1uF capacitor, COUT, should be placed between VOUT and  
GND. This capacitor will prevent parasitic board inductances  
from forcing VOUT below GND when the switch turns-off. For  
the FPF2123 and FPF2124, the total output capacitance needs  
to be kept below a maximum value, COUT(max), to prevent the  
part from registering an over-current condition and turning-off  
the switch. The maximum output capacitance can be  
determined from the following formula,  
During normal operation as a switch, the power dissipated in the  
part will depend upon the level at which the current limit is set.  
The maximum allowed setting for the current limit is 1.5A and  
this will result in a typical power dissipation of,  
2
P = (ILIM )2 RON = (1.5) 0.125 = 281mW  
(3)  
If the part goes into current limit the maximum power dissipation  
will occur when the output is shorted to ground. For the  
FPF2123 the power dissipation will scale by the Auto-Restart  
Time, tRESTART, and the Over Current Blanking Time, tBLANK  
so that the maximum power dissipated is,  
I
LIM (max) tBLANK (min)  
(2)  
C
OUT (max) =  
,
V
IN  
10  
www.fairchildsemi.com  
FPF2123-FPF2125 Rev. C  
tBLANK(max)  
P(max)=  
V (max)LLIM(max)  
IN  
tRESTART(min) + tBLANK(max)  
20  
(4)  
=
5 . 5 1 . 5 = 1 . 65 W  
80 + 20  
This is more power than the package can dissipate, but the  
thermal shutdown of the part will activate to protect the part  
from damage due to excessive heating. When using the  
FPF2124, attention must be given to the manual resetting of the  
part. Continuously resetting the part when a short on the output  
is present will cause the temperature of the part to increase.  
The junction temperature will only be able to increase to the  
thermal shutdown threshold. Once this temperature has been  
reached, toggling ON will not turn-on the switch until the  
junction temperature drops. For the FPF2125, a short on the  
output will cause the part to operate in a constant current state  
dissipating a worst case power of,  
(5)  
P(max) = V IN (max) I LIM (max)  
= 5 .5 1.5 = 8 . 25 W  
This large amount of power will activate the thermal shutdown  
and the part will cycle in and out of thermal shutdown so long as  
the ON pin is active and the short is present.  
Board Layout  
For best performance, all traces should be as short as possible.  
To be most effective, the input and output capacitors should be  
placed close to the device to minimize the effects that parasitic  
trace inductances may have on normal and short-circuit  
operation. Using wide traces for VIN, VOUT and GND will help  
minimize parasitic electrical effects along with minimizing the  
case to ambient thermal impedance.  
11  
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FPF2123-FPF2125 Rev. C  
Dimensional Outline and Pad Layout  
12  
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FPF2123-FPF2125 Rev. C  
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not intended to be an exhaustive list of all such trademarks.  
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FAIRCHILD SEMICONDUCTOR RESERVESTHE RIGHTTO MAKE CHANGES WITHOUTFURTHER NOTICETOANY  
PRODUCTS HEREINTO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOTASSUMEANYLIABILITY  
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DEVICES OR SYSTEMS WITHOUTTHE EXPRESS WRITTENAPPROVALOF FAIRCHILD SEMICONDUCTOR CORPORATION.  
As used herein:  
1. Life support devices or systems are devices or  
systems which, (a) are intended for surgical implant into  
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failure to perform when properly used in accordance  
with instructions for use provided in the labeling, can be  
reasonably expected to result in significant injury to the  
user.  
2. A critical component is any component of a life  
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effectiveness.  
PRODUCT STATUS DEFINITIONS  
Definition of Terms  
Datasheet Identification  
Product Status  
Definition  
Advance Information  
Formative or  
In Design  
This datasheet contains the design specifications for  
product development. Specifications may change in  
any manner without notice.  
Preliminary  
First Production  
This datasheet contains preliminary data, and  
supplementary data will be published at a later date.  
Fairchild Semiconductor reserves the right to make  
changes at any time without notice in order to improve  
design.  
No Identification Needed  
Obsolete  
Full Production  
This datasheet contains final specifications. Fairchild  
Semiconductor reserves the right to make changes at  
any time without notice in order to improve design.  
Not In Production  
This datasheet contains specifications on a product  
that has been discontinued by Fairchild semiconductor.  
The datasheet is printed for reference information only.  
Rev. I16  
配单直通车
FPF2125产品参数
型号:FPF2125
是否无铅:不含铅
是否Rohs认证:符合
生命周期:Active
IHS 制造商:ROCHESTER ELECTRONICS LLC
零件包装代码:SOIC
包装说明:1.60 MM, MO-178AA, SOT-23, 5 PIN
针数:5
Reach Compliance Code:unknown
风险等级:5.75
Is Samacsys:N
内置保护:OVER CURRENT; THERMAL; UNDER VOLTAGE
接口集成电路类型:BUFFER OR INVERTER BASED PERIPHERAL DRIVER
JESD-30 代码:R-PDSO-G5
JESD-609代码:e3
长度:2.9 mm
湿度敏感等级:1
功能数量:1
端子数量:5
最高工作温度:85 °C
最低工作温度:-40 °C
标称输出峰值电流:0.8 A
封装主体材料:PLASTIC/EPOXY
封装代码:LSSOP
封装形状:RECTANGULAR
封装形式:SMALL OUTLINE, LOW PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260
认证状态:COMMERCIAL
座面最大高度:1.4 mm
最大供电电压:5.5 V
最小供电电压:1.8 V
标称供电电压:3.3 V
表面贴装:YES
技术:MOS
温度等级:INDUSTRIAL
端子面层:MATTE TIN
端子形式:GULL WING
端子节距:0.95 mm
端子位置:DUAL
处于峰值回流温度下的最长时间:30
宽度:1.6 mm
Base Number Matches:1
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