Triple 1.2A USB Switch in 4mm x 4mm Thin QFN


The MAX1564 triple, current-limited USB switch comes in a space-saving, 16-pin, 4mm x 4mm thin QFN package. Each channel meets all IEC specifications for USB ports. The device is capable of supplying up to 1.2A from each output. The MAX1564 has multiple protection features, including thermal shutdown to limit junction temperature in case of a prolonged short or overload condition. Reverse-current protection circuitry blocks current flow from output to input regardless of the switch state. The IC has accurate, user-programmable current-limiting circuitry to protect the input supply against overload.

Each output of the MAX1564 has short-circuit protection that latches off the switch when the output is shorted for more than 20ms, thereby saving system power. Auto-restart then tests the shorted output with a 25mA current to determine when the short is removed, then automatically restarts the output. Independent open-drain fault signals notify the microprocessor that the internal current limit has been reached. A 20ms fault-blanking feature allows momentary faults to be ignored, such as those caused when hot-swapping into a capacitive load. This feature helps avoid issuing false alarms to the host system. Blanking also suppresses errant fault signals when the device is powering up.
MAX1564: Typical Application Circuit MAX1564: Typical Application Circuit Enlarge+

Key Features

  • Tiny 16-Pin 4mm x 4mm Thin QFN Package
  • Reverse-Current Blocking
  • Programmable Current Limit
  • Auto-Restart when Fault Is Removed
  • 12% Accurate Current Limit
  • Up to 1.2A Load Current for Each Output
  • Thermal-Overload Protection
  • Built-In 20ms Fault Blanking
  • Compliant with All USB Specifications
  • 2.7V to 5.5V Input Supply Range
  • Independent Fault Indicator Outputs
  • Active-High/Active-Low Select Pin
  • ±15kV ESD Protection (with Caps)


  • Desktop Computers
  • Docking Stations
  • Notebook Computers
  • USB Hubs
  • USB Ports
Part Number USB Power Switches Current Limit
Current Limit
Fault Indicator Current Limit Accuracy
Current Limit Set By Lowest Adj. Setting
Oper. Temp.
Package/Pins Budgetary
min max typ min max See Notes
MAX1564  Yes 3 490 1200 Yes 12.5 Resistor 0.4 0.06 2.7 5.5 -40 to +85
$1.55 @1k
See All Current Limit and USB Power Switches (74)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

MAX1564EVKIT: Evaluation Kit for MAX1564

Quality and Environmental Data

Request Reliability Report for: MAX1564 
Lead-Free Package Tin (Sn) Whisker Reports

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Type ID Title
Evaluation Board5143MAX1564EVKIT Evaluation Kit for MAX1564