MAX1562H:Programmable, 4A, USB, Current-Limited Switches with Autoreset and Fault Blanking

Smallest Programmable, 4A, Current-Limited USB Switch with Autoreset and Fault Blanking Half the Size of Competitors

The MAX1562/MAX1562H/MAX1563 single current-limited switches provide up to 4A to power up to eight USB ports. They operate from a 4V to 5.5V input supply and consume only 40µA of quiescent current when operating and only 3µA in shutdown. The MAX1562/MAX1562H/MAX1563s' autoreset feature latches the switch off if the output is shorted, thereby saving system power. When the short is removed, the switch is reactivated. A fault-blanking feature enables the circuit to ignore momentary faults, such as those caused when hot swapping a capacitive load, preventing false alarms to the host system. Fault blanking also prevents fault signals from being issued when the device powers up the load. The MAX1562/MAX1562H/MAX1563 provide several safety features to protect the USB port. Built-in thermal-overload protection turns off the switch when the die temperature exceeds +160°C. Accurate internal current-limiting circuitry protects the input supply against both overload and short-circuit conditions. An open-drain fault signal (FAULT) notifies the microprocessor when a thermal-overload, current-limit, undervoltage lockout (UVLO), or short-circuit fault occurs. The MAX1562 has an active-low ON, and the MAX1562H has an active-high ON enable input. The MAX1563 has a selectable active-high or active-low, logic-controlled enable. The current limit is programmed from 1A to 4A using a resistor. The MAX1562/MAX1562H are available in 8-pin SO packages and are pin-compatible upgrades to the MIC2545A/MIC2549A. The MAX1563 provides the same features and higher current performance in a smaller 12-pin (4mm x 4mm) Thin QFN package. These devices operate over an extended temperature range (-40°C to +85°C). An evaluation kit is available to speed designs.

Key Features
  • Programmable Current Limit (1A to 4A) with Resistor
  • Autoreset Feature Saves System Power
  • 20ms Fault-Blanking Circuitry
  • Active-High/Low Control Logic
  • Fault-Indicator Output
  • Thermal-Overload Protection
  • Smaller 4mm x 4mm Thin QFN Package (MAX1563)
  • 3µA Shutdown Current
MAX1562, MAX1562H, MAX1563: Typical Operating Circuit
MAX1562, MAX1562H, MAX1563: Typical Operating Circuit
Applications/Uses
  • Desktop Computers
  • Docking Stations
  • Notebook Computers
  • PDAs and Palmtop Computers
  • USB Ports and Hubs
DataSheet
titleDownload file
MAX1562-MAX1563 Data SheetMAX1562-MAX1563.pdf
Parametrics
Part NumberUSBPower SwitchesCurrent Limit
(mA)
Current Limit
(mA)
Fault IndicatorCurrent Limit Accuracy
(%)
Current Limit Set ByLowest Adj. Setting
(A)
RON
(Ω)
VSUPPLY
(V)
VSUPPLY
(V)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
minmaxtypminmaxSee Notes
MAX1562Yes110004000Yes20Resistor10.02645.5-40 to +85SOIC(N)/8$1.10 @1k
MAX1562HSOIC(N)/8$1.10 @1k
MAX1563TQFN/12$1.20 @1k
Design kits & evaluation modules
Related Products
  • MAX1940:Triple USB Switch with Autoreset and Fault Blanking
  • MAX1946:Single USB Switch with Autoreset and Fault Blanking in Tiny TDFN
  • MAX1823:Dual USB Switch with Fault Blanking and Autoreset
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1562HESANo Longer AvailableMAX1562HESA+SOIC(N),;8 pin;30.9 mm²-40°C to +85°CNo
MAX1562HESA+ActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX1562HESA+TActiveSOIC(N),;8 pin;30.9 mm²-40°C to +85°CLead Free
MAX1562HESA-TNo Longer AvailableMAX1562HESA+TSOIC(N),;8 pin;30.9 mm²-40°C to +85°CNo
MAX1562-MAX1563.pdf MAX1563
MAX1562-MAX1563.pdf MAX1563