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RT9702_11

更新时间: 2024-02-21 22:00:43
品牌 Logo 应用领域
立锜 - RICHTEK 开关电源开关
页数 文件大小 规格书
16页 364K
描述
80mΩ, 500mA/1.1A High Side Power Switches with Flag

RT9702_11 数据手册

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RT9702/A  
80mΩ, 500mA/1.1A High Side Power Switches with Flag  
General Description  
Features  
z Compliant to USB Specifications  
z Built-In (Typically 80mΩ) N-Channel MOSFET  
z Output Can Be Forced Higher Than Input (Off-State)  
z Low Supply Current :  
The RT9702 and RT9702Aare cost-effective, low voltage,  
single N-Channel MOSFET high-side power switches,  
optimized for self-powered and bus- powered Universal  
Serial Bus (USB) applications. The RT9702/A equipped  
with a charge pump circuitry to drive the internal MOSFET  
switch; the switch's low RDS(ON), 80mΩ, meets USB  
voltage drop requirements; and a flag output is available  
to indicate fault conditions to the local USB controller.  
25uA Typical at Switch On State  
1uA Typical at Switch Off State  
z Guaranteed 500mA/RT9702 and 1.1A/RT9702A  
Continuous Load Current  
z Wide Input Voltage Ranges : 2V to 5.5V  
z Open-Drain Fault Flag Output  
Additional features include soft-start to limit inrush current  
during plug-in, thermal shutdown to prevent catastrophic  
switch failure from high current loads, under-voltage  
lockout (UVLO) to ensure that the device remains off  
unless there is a valid input voltage present, fault current  
is limited to typically 800mAfor RT9702 in single port and  
1.5A for RT9702A in dual ports in accordance with the  
USB power requirements, lower quiescent current as 25μA  
making this device ideal for portable battery-operated  
equipment.  
z Hot Plug-In Application (Soft-Start)  
z 1.7V Typical Under Voltage Lockout (UVLO)  
z Current Limiting Protection  
z Thermal Shutdown Protection  
z Reverse Current Flow Blocking (no body diode)  
z Smallest SOT-23-5 and TSOT-23-5 Packages  
Minimizes Board Space  
z UL ApprovedE219878  
z TUV IEC60950-1 : 2005 Certified  
The RT9702/A is available in SOT-23-5 and TSOT-23-5  
packages requiring minimum board space and smallest  
components.  
z RoHS Compliant and 100% Lead (Pb)-Free  
Applications  
z USB Bus/Self Powered Hubs  
Ordering Information  
RT9702/A  
z USB Peripherals  
z ACPI PowerDistribution  
z PC Card Hot Swap  
Package Type  
B : SOT-23-5  
z Notebook, Motherboard PCs  
z Battery-Powered Equipment  
z Hot-Plug Power Supplies  
z Battery-Charger Circuits  
J5 : TSOT-23-5  
Lead Plating System  
P : Pb Free  
G : Green (Halogen Free and Pb Free)  
1.1A Output Current  
500mA Output Current  
Note :  
Marking Information  
For marking information, contact our sales representative  
directly or through a Richtek distributor located in your  
area.  
Richtek products are :  
` RoHS compliant and compatible with the current require-  
ments of IPC/JEDEC J-STD-020.  
` Suitable for use in SnPb or Pb-free soldering processes.  
DS9702/A-15 April 2011  
www.richtek.com  
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