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RT9711A fiches techniques PDF

Richtek - 1.5A/0.6A High-Side Power Switches

Numéro de référence RT9711A
Description 1.5A/0.6A High-Side Power Switches
Fabricant Richtek 
Logo Richtek 





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RT9711A fiche technique
RT9711A/B/C/D
80mΩ, 1.5A/0.6A High-Side Power Switches with Flag
General Description
The RT9711A/B/C/D are cost-effective, low voltage, single
N-MOSFET high-side power switches, optimized for self-
powered and bus-powered Universal Serial Bus (USB)
applications. The RT9711 series are equipped with a
charge pump circuitry to drive the internal MOSFET switch.
The switch's low RDS(ON), 80mΩ, meets USB voltage drop
requirements. A flag output is available to indicate fault
conditions to the local USB controller.
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 2.5A for RT9711A/B in dual ports
and 1A for RT9711C/D in single port in accordance with
the USB power requirements, lower quiescent current as
25μA making this device ideal for portable battery-operated
equipment.
The RT9711 series are available in SOT-23-5, TSOT-23-5,
SOP-8 and MSOP-8 packages fitting different aspect of
broad applications.
Features
z Compliant to USB Specifications
z Built-In N-MOSFET
` Typical RDS(ON) : 80mΩ (SOT-23-5 & TSOT-23-5) and
90mΩ (SOP-8 & MSOP-8)
z Output Can Be Forced Higher Than Input (Off-State)
z Low Supply Current :
25μA Typical at Switch On State
1μA Typical at Switch Off State
z Guaranteed 1.5A for RT9711A/B and 0.6A for
RT9711C/D Continuous Load Current
z Wide Input Voltage Ranges : 2.5V to 5.5V
z Open-Drain Fault Flag Output
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
z RoHS Compliant and 100% Lead (Pb)-Free
Ordering Information
RT9711
Applications
Package Type
z USB Bus/Self Powered Hubs
B : SOT-23-5
z USB Peripherals
BG : SOT-23-5 (G-Type)
J5 : TSOT-23-5
S : SOP-8
F : MSOP-8
Lead Plating System
P : Pb Free
z ACPI Power Distribution
z PC Card Hot Swap
z Notebook, Motherboard PCs
z Battery-Powered Equipment
z Hot-Plug Power Supplies
G : Green (Halogen Free and Pb Free) z Battery-Charger Circuits
Note :
Output Current/EN Function
A : 1.5A/Active High
B : 1.5A/Active Low
C : 0.6A/Active High
D : 0.6A/Active Low
Richtek products are :
Marking Information
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
` 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.
DS9711A/B/C/D-03 April 2011
www.richtek.com
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