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首页 > 产品中心 > 电源管理 > 限流负载开关 > 限流负载开关 >CXUS7701H/L智能开关限流P沟道MOSFET功率开关2.4V到5.5V的输入高压侧负载开关可编程过电流阈值快速瞬态响应防止热过载限制功耗连接温度
CXUS7701H/L智能开关限流P沟道MOSFET功率开关2.4V到5.5V的输入高压侧负载开关可编程过电流阈值快速瞬态响应防止热过载限制功耗连接温度
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CXUS7701H/L智能开关是一种电流受限的P沟道MOSFET电源专为高压侧负载开关应用而设计的开关。这个开关工作输入电压从2.4V到5.5V,非常适合3V和5V系统。集成限流电路保护输入电源不受大电流的影响这可能会导致供应失控。CXUS7701H/L也是防止热过载,限制功耗和连接
温度。它可以用来控制需要高达1A的负载。电流限制阈值由一个电阻从设定到接地进行编程。静止电源电流通常为低9μa。在关机模式下,电源电流降低小于1μA

CXUS7701H/L智能开关限流P沟道MOSFET功率开关2.4V到5.5V的输入高压侧负载开关可编程过电流阈值快速瞬态响应防止热过载限制功耗连接温度
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目录bi8嘉泰姆

1.产品概述                       2.产品特点bi8嘉泰姆
3.应用范围                       4.产品封装图bi8嘉泰姆
5.电路原理图                    6.产品PDF文档 bi8嘉泰姆
7.
功能概述                        8.相关产品bi8嘉泰姆

一,产品概述(General Description)     bi8嘉泰姆


     The CXUS7701H/L SmartSwitch is a current limited P-channel MOSFET power bi8嘉泰姆

switch designed for high-side load switching applications. This switch operates bi8嘉泰姆

with inputs ranging from 2.4V to 5.5V, making it ideal for both 3V and 5V systems. An integrated current-limiting circuit protects the input supply against large currents bi8嘉泰姆

which may cause the supply to fall out of regulation. The CXUS7701H/L is also bi8嘉泰姆

protected from thermal overload which limits power dissipation and junction bi8嘉泰姆

temperatures. It can be used to control loads that require up to 1A. Current limit bi8嘉泰姆

threshold is programmed with a resistor from SET to ground. The quiescent supplybi8嘉泰姆

 current is typically a low 9μA. In shutdown mode, the supply current decreasesbi8嘉泰姆

 to less than 1μA.bi8嘉泰姆

      The CXUS7701H/L is available in a Pb-free 5-pin SOT23 or 8-pin SC70JW packagebi8嘉泰姆

 and is specified over the -40°C to +85°C temperature range.bi8嘉泰姆
二.产品特点(Features)bi8嘉泰姆


Input Voltage Range: 2.4V to 5.5Vbi8嘉泰姆

Programmable Over-Current Thresholdbi8嘉泰姆
Fast Transient Response:bi8嘉泰姆
— 400ns Response to Short Circuitbi8嘉泰姆
Low Quiescent Currentbi8嘉泰姆
— 9μA Typicalbi8嘉泰姆
— 1μA Max with Switch Offbi8嘉泰姆
145mΩ Typical RDS(ON)bi8嘉泰姆
Only 2.5V Needed for ON/OFF Controlbi8嘉泰姆
Under-Voltage Lockoutbi8嘉泰姆
Thermal Shutdownbi8嘉泰姆
4kV ESD Ratingbi8嘉泰姆
5-Pin SOT23 or 8-Pin SC70JW Packagebi8嘉泰姆

Temperature Range: -40°C to +85°Cbi8嘉泰姆
三,应用范围 (Applications)bi8嘉泰姆


 Hot Swap Suppliesbi8嘉泰姆
Notebook Computersbi8嘉泰姆
Peripheral Portsbi8嘉泰姆
Personal Communication Devicesbi8嘉泰姆
四,产品封装图 (Package)bi8嘉泰姆
bi8嘉泰姆

Pin Numberbi8嘉泰姆

Symbolbi8嘉泰姆

Functionbi8嘉泰姆

1bi8嘉泰姆

OUTbi8嘉泰姆

P-channel MOSFET drain. Connect a 0.47μF capacitor from OUT to GND.bi8嘉泰姆

2bi8嘉泰姆

GNDbi8嘉泰姆

Ground connection.bi8嘉泰姆

3bi8嘉泰姆

SETbi8嘉泰姆

Current limit set input. A resistor from SET to ground sets the current limit for the switch.bi8嘉泰姆

4bi8嘉泰姆

ONbi8嘉泰姆

Enable input. Two versions are available, active-high and active-low. See Ordering Information for details.bi8嘉泰姆

5bi8嘉泰姆

INbi8嘉泰姆

P-channel MOSFET source. Connect a 1μF capacitor from IN to GND.bi8嘉泰姆

五,电路原理图bi8嘉泰姆
bi8嘉泰姆
六.产品PDF文档 bi8嘉泰姆


需要详细的PDF规格书请扫一扫微信联系我们,还可以获得免费样品以及技术支持bi8嘉泰姆

 QQ截图20160419174301.jpgbi8嘉泰姆

七,功能概述bi8嘉泰姆

Operation in Current Limitbi8嘉泰姆

     When a heavy load is applied to the output of the CXUS7701H/L,the load current is limited to the value of ILIM determined by RSET. See Figure 2, "Overload Operation." Since bi8嘉泰姆

the load is demanding more current than ILIM, the voltage at  the output drops. This causes the CXUS7701H/L to dissipate a larger than nor-mal quantity of power, and its die temperature to increase. When the die temperature exceeds an over-temperature limit, the CXUS7701H/L will shut down until is has cooled sufficiently, at which point it will startup again.bi8嘉泰姆

      The CXUS7701H/L will continue to cycle on and off until the load is removed, power is removed, or until a logic  high level is applied to ON. bi8嘉泰姆

Enable Inputbi8嘉泰姆
    In many systems, power planes are controlled by integrated circuits which run at lower voltages than the power plane itself. The enable input ON of the CXUS7701H/L has low and high threshold voltages that accommodate this condition.The threshold voltages are compatible with 5V TTL and 2.5V to 5V CMOS. bi8嘉泰姆

Reverse Voltagebi8嘉泰姆
      The CXUS7701H/L is designed to control current flowing from IN to OUT. If a voltage is applied tobi8嘉泰姆

 OUT which is  greater than the voltage on IN, large currents may flow. This could cause damage to thebi8嘉泰姆

 CXUS7701H/L.bi8嘉泰姆

八,相关产品            更多同类产品......bi8嘉泰姆


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