AGREE

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RT9711A/RT9711B/RT9711C/RT9711D

80mΩ, 1.5A/0.6A High-Side Power Switches with Flag

RT9711A/RT9711B/RT9711C/RT9711D
New

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.

Applications

  • USB Bus/Self Powered Hubs
  • USB Peripherals
  • ACPI Power Distribution
  • PC Card Hot Swap
  • Notebook, Motherboard PCs
  • Battery-Powered Equipment
  • Hot-Plug Power Supplies
  • Battery-Charger Circuits

Key Spec.

RT9711A RT9711B RT9711C RT9711D
Status NRND NRND NRND NRND
Recommended Alternative  RT9742 RT9742 RT9742 RT9742
Number of Outputs 1 1 1 1
Vin (min) (V) 2.5 2.5 2.5 2.5
Vin (max) (V) 5.5 5.5 5.5 5.5
Ron (typ) (mOhm) 80 80 80 80
Iq (typ) (mA) 0.055;0.075 0.055;0.075 0.055;0.075 0.055;0.075
Current Limit (typ) (A) 2.5 2.5 1 1
FLAG Indicator Yes Yes Yes Yes
Iocp Adjustable No No No No
Safety UL UL UL UL
Switch Type Power Switch Power Switch Power Switch Power Switch
Features Cycle-by-Cycle Current Limit;Enable Input;SCP Cycle-by-Cycle Current Limit;Enable Input;SCP Cycle-by-Cycle Current Limit;Enable Input;SCP Cycle-by-Cycle Current Limit;Enable Input;SCP
Package Type SOP-8;SOT-25;TSOT-25;MSOP-8 SOP-8;SOT-25;TSOT-25;MSOP-8 SOP-8;SOT-25;TSOT-25;MSOP-8 SOP-8;SOT-25;TSOT-25;MSOP-8

Features

  • Compliant to USB Specifications

  • Built-In N-MOSFET
      ♦ Typical RDS(ON) : 80mΩ (SOT-23-5 & TSOT-23-5) and 90mΩ (SOP-8 & MSOP-8)

  • Output Can Be Forced Higher Than Input (Off-State)

  • Low Supply Current :
      ♦ 25μA Typical at Switch On State
      ♦ 1μA Typical at Switch Off State

  • Guaranteed 1.5A for RT9711A/B and 0.6A for RT9711C/D Continuous Load Current

  • Wide Input Voltage Ranges : 2.5V to 5.5V

  • Open-Drain Fault Flag Output

  • Hot Plug-In Application (Soft-Start)

  • 1.7V Typical Under-Voltage Lockout (UVLO)

  • Current Limiting Protection

  • Thermal Shutdown Protection

  • Reverse Current Flow Blocking (no body diode)

  • Smallest SOT-23-5 and TSOT-23-5 Packages Minimizes Board Space

  • UL Approved-E219878

  • TUV IEC60950-1 : 2005 Certified

  • RoHS Compliant and 100% Lead (Pb)-Free

Application Notes

Datasheet

DS9711ABCD-03.pdf

Datasheet

DS9711ABCD-03.pdf

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