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Single 1.2A USB Switch in 3mm x 3mm TDFN

Product Details

Key Features

Parametric specs for Current Limit and USB Power Switches
Current Limit (mA) (min) 500
Current Limit (mA) (max) 1200
# Power Switches 1
USB Yes
Fault Indicator Yes
Current Limit Accuracy (%) 14
Current Limit Set By Resistor
Lowest Adj. Setting (A) 0.5
RON (Ω) (typ) 0.055
VSUPPLY (V) (min) 2.7
VSUPPLY (V) (max) 5.5
Oper. Temp. (°C) -40 to +85
Package/Pins TDFN/8
Budgetary
Price (See Notes)
0.7
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Simplified Block Diagram

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Parameters

Parametric specs for Current Limit and USB Power Switches
Current Limit (mA) (min) 500
Current Limit (mA) (max) 1200
# Power Switches 1
USB Yes
Fault Indicator Yes
Current Limit Accuracy (%) 14
Current Limit Set By Resistor
Lowest Adj. Setting (A) 0.5
RON (Ω) (typ) 0.055
VSUPPLY (V) (min) 2.7
VSUPPLY (V) (max) 5.5
Oper. Temp. (°C) -40 to +85
Package/Pins TDFN/8
Budgetary
Price (See Notes)
0.7

Key Features

  • Reverse Current Protection
  • Programmable Current Limit Up to 1.2A
  • Accurate Current Limit
  • Selectable Auto-Restart when Fault Is Removed
  • Thermal-Overload Protection
  • Selectable Active-High/Low ON Input
  • Built-In 20ms Fault Blanking
  • Compliant with All USB Specifications
  • 2.75V to 5.5V Input Supply Range
  • Active-Low FAULT Indicator Output
  • 15kV ESD Protection (with Caps)
  • Tiny 8-Pin 3mm x 3mm TDFN Package

Applications/Uses

  • Desktop/Notebook Computers
  • Docking Stations
  • PDAs and Palmtop Computers
  • USB Ports/Hubs

Description

The MAX8586 single current-limited switch controls up to 1.2A to power USB applications and has multiple protection features including thermal shutdown, internal current limiting, and reverse current protection. The thermal shutdown limits junction temperature during a prolonged short or overload condition. The internal current-limiting circuitry protects the input supply against overload and is programmable using an external resistor. The MAX8586 meets all IEC specifications for USB ports.

The IC latches off when the output experiences a short circuit for more than 20ms, saving system power. Auto-restart tests the shorted output with a 25mA current to determine if the short still exists. Once the short is removed, the MAX8586 automatically restarts the output. An open-drain fault signal notifies the system that the internal current limit has been reached. A 20ms fault-blanking feature allows the circuit to ignore momentary faults such as those caused when hot-swapping into a capacitive load. An ENRESET input is available to disable the auto-restart function.

The MAX8586 features a SEL input that programs ON to be either active high or active low. The IC is supplied in a space-saving, 8-pin, 3mm x 3mm TDFN package.

Simplified Block Diagram

MAX8586: Typical Operating Circuit MAX8586: Typical Operating Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .