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A4772

AiT Semiconductor
Part Number A4772
Manufacturer AiT Semiconductor
Description POWER SWITCHES
Published Jun 5, 2015
Detailed Description AiT Semiconductor Inc. www.ait-ic.com A4772 POWER SWITCHES WITH FLAG 80mΩ, 0.5A/0.8A/1A/1.5A HIGH-SIDE DESCRIPTION The...
Datasheet PDF File A4772 PDF File

A4772
A4772

Overview
AiT Semiconductor Inc.
www.
ait-ic.
com A4772 POWER SWITCHES WITH FLAG 80mΩ, 0.
5A/0.
8A/1A/1.
5A HIGH-SIDE DESCRIPTION The A4772 is a low voltage, single N-MOSFET high-side power switch, optimized for self-powered and bus-powered Universal Serial Bus (USB) applications.
The A4772 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.
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.
The maximum current is limited to typically 2.
1A/1.
5A/1A/0.
65A through the switch of A4772A/B/C/D, lower quiescent current as 25uA making this device ideal for portable battery-operated equipment.
The A4772 is available in SOT-25 package.
ORDERING INFORMATION Package Type Part Number SOT-25 Note E5 A4772ZE5R-X A4772ZE5VR-X X: Pin Type Z: Current V: Halogen free Package R: Tape & Reel AiT provides all RoHS products Suffix “ V “ means Halogen free Package FEATURES  Wide Input Voltage Ranges : 2.
5V to 5.
5V  Compliant to USB Specifications  Typical RDS(ON) : 80mΩ  1.
7V Typical Under-Voltage Lockout (UVLO)  Output Can Be Forced Higher Than Input (Off-State)  Low Supply Current : 25uA Typical at Switch on State 1uA Typical at Switch off State  Guaranteed 1.
5A/1A/0.
8A/0.
5A for A4772A/B/C/D Continuous Load Current  Open-Drain Fault Flag Output  Hot Plug-In Application (Soft-Start)  Current Limiting Protection  Thermal Shutdown Protection  Reverse Current Flow Blocking (no body diode)  Available in SOT-25 Package APPLICATION  USB Bus/Self Powered Hubs  USB Peripherals  ACPI Power Distribution  PC Card Hot Swap  Notebook, Motherboard PCs  Battery-Powered Equipment  Hot-Plug ...


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