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

目录

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

一,产品概述(General Description)     

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

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

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 

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

protected from thermal overload which limits power dissipation and junction 

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

threshold is programmed with a resistor from SET to ground. The quiescent supply

 current is typically a low 9μA. In shutdown mode, the supply current decreases

 to less than 1μA.

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

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

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Input Voltage Range: 2.4V to 5.5V

Programmable Over-Current Threshold
Fast Transient Response:
— 400ns Response to Short Circuit
Low Quiescent Current
— 9μA Typical
— 1μA Max with Switch Off
145mΩ Typical RDS(ON)
Only 2.5V Needed for ON/OFF Control
Under-Voltage Lockout
Thermal Shutdown
4kV ESD Rating
5-Pin SOT23 or 8-Pin SC70JW Package

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

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 Hot Swap Supplies
Notebook Computers
Peripheral Ports
Personal Communication Devices
四,产品封装图 (Package)

Pin Number	Symbol	Function
1	OUT	P-channel MOSFET drain. Connect a 0.47μF capacitor from OUT to GND.
2	GND	Ground connection.
3	SET	Current limit set input. A resistor from SET to ground sets the current limit for the switch.
4	ON	Enable input. Two versions are available, active-high and active-low. See Ordering Information for details.
5	IN	P-channel MOSFET source. Connect a 1μF capacitor from IN to GND.

五,电路原理图

六.产品PDF文档 

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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！

 

七,功能概述

Operation in Current Limit

     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 

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.

      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. 

Enable Input
    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. 

Reverse Voltage
      The CXUS7701H/L is designed to control current flowing from IN to OUT. If a voltage is applied to

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

 CXUS7701H/L.

八,相关产品            更多同类产品......

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USB限流开关IC
型号	工作电压	电流限制	静态电流	截止电流	内阻	欠压锁 定电压	抗静电 电压	响应时间	封装
CXUS7701H/L	2.4V-5.5V	1A可调	15uA	1uA	80 mohm	1.8V	2 KV	2 uS	SOT-25
CXUS7702	2.0V-6.5V	2.1A可调	40uA	1uA	70 mohm	1.7V	8 KV	4.6 mS	SOT-25
CXUS7703CB	2.2V-6.0V	1.1A	23uA	0.1uA	100 mohm	1.8V	6KV	400 uS	SOT-25
CXUS7703DB	2.2V-6.0V	1.5A	23uA	0.1uA	50 mohm	1.8V	6KV	400 uS	SOT-25
CXUS7704A/C/D	2.5V-5.5V	2.1A/1.0A/0.65A	25uA	0.1uA	80 mohm	1.7V	4 KV	400 uS	SOT-25
CXUS7705A	2.5V-5.5V	2.1A	25uA	0.1uA	80 mohm	1.7V	4 KV	400 uS	SOT-25
CXUS7706	2.0V-5.5V	0.8A	50uA	0.5uA	200 mohm	1.7V	8 KV	4.6 mS	SOT-25