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Maxim > Products > [Hot-Swap and Power Switching] 
MAX1558, MAX1558H
Dual, 3mm x 3mm, 1.2A/Programmable-Current USB Switches with Autoreset

Smallest Dual USB Switches with Up to 1.2A Current per Channel in a 3mm x 3mm TDFN Package


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 228kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX1558/MAX1558H are dual, current-limited switches with autoreset for USB applications. Autoreset latches the switch off if it is shorted for more than 20ms, saving system power. The shorted output is then tested to determine when the short is removed to automatically restart the channel. Each channel delivers up to 1.2A and meets all IEC specifications for USB ports. Low quiescent supply current (45µA) and standby current (3µA) conserve battery power in portable applications.

The MAX1558/MAX1558H safety features ensure that the USB port is protected. Built-in thermal-overload protection limits power dissipation and junction temperature. Accurate, programmable current-limiting circuitry protects the input supply against both overload and short-circuit conditions. 20ms fault blanking enables the circuit to ignore transient faults, such as those caused when hot swapping a capacitive load, preventing false alarms to the host system. The MAX1558/MAX1558H also feature reverse-current protection circuitry to block current flow from the output to the input when the switches are off.

The MAX1558/MAX1558H are available in space-saving 3mm x 3mm, 10-pin TDFN packages. The MAX1558 is enabled with an active-low signal, and the MAX1558H is enabled with an active-high signal.

Key Features   Applications/Uses
  • 55mΩ Switch Resistance
  • Tiny 10-Pin, 3mm x 3mm TDFN Package
  • 14% Accurate Current Limit
  • Autorestart when Fault is Removed
  • Programmable Current Up to 1.2A
  • Thermal-Overload Protection
  • Built-In 20ms Fault Blanking
  • Compliant to All USB Specifications
  • 2.7V to 5.5V Supply Range
  • Independent-Output Fault Indicators
  • Block Reverse Current when Disabled
  • 15kV ESD Protection (with Capacitor)
  • Underwriters Laboratories (UL®) Recognized

  
  		• Docking Stations
  		• Notebook Computers and Desktops
  		• PDAs and Palmtop Computers
  		• USB Ports and Hubs

    Key Specifications:  USB Power Switches
    Part Number Functions Switches ILOAD
    (A)    		 RON
    (Ω)    		 Fault Indicator Fault Blanking Timeout
    (ms)    		 VIN
    (V)    		 Package/Pins Smallest Available Pckg.
    (mm2)    		 Oper. Temp.
    (°C)    		 Price
    max typ max w/pins See Notes
    MAX1558 
    Auto Reset From Fault
    Fault Blanking
    Programmable Current Limit
    Reverse Voltage Blocking
    		 2 1.4 0.055 Yes 20 2.7 to 5.5
    TDFN-EP/10
    		 10 -40 to +85 $1.10 @1k
    MAX1558H 
    TDFN-EP/10
    		 $1.10 @1k
    See All USB Power Switches (28)

    Diagram
    MAX1558, MAX1558H: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  		• Application Note 4226: Surge Testing Solid-State USB Switches and Other Overcurrent Protectors - MAX1558
  		• Application Note 4232: HFRD-34.0 4 x 4 DVI KVM Switch - MAX1558

    Design Guides
  		• Low-Power Notebook ICs (PDF)
  		• Power Management for Battery-Powered Equipment (PDF)

    Reliability Reports
  		• Reliability Report: MAX1558.pdf
  		• Show FIT data for:
  		• Request Reliability Report for:
  		• Underwriters Laboratories (UL®) Recognized

    Software/Models
    none

    Ordering Information
    Notes:

    1. Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales.
    2. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day.
    3. Part number suffixes: T or T&R = tape and reel;+ = RoHS/lead-free;# = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions.
    4. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.


    Devices: 1-6 of 6

    MAX1558 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1558ETB+  
    		Active TDFN-EP;10 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0003 (PDF)
    Use pkgcode/variation: T1033+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1558ETB-T    
    		Active TDFN-EP;10 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0003 (PDF)
    Use pkgcode/variation: T1033-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1558ETB+T    
    		Active TDFN-EP;10 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0003 (PDF)
    Use pkgcode/variation: T1033+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1558H Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1558HETB+  
    		Active TDFN-EP;10 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0003 (PDF)
    Use pkgcode/variation: T1033+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1558HETB-T    
    		Active TDFN-EP;10 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0003 (PDF)
    Use pkgcode/variation: T1033-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1558HETB+T    
    		Active TDFN-EP;10 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0003 (PDF)
    Use pkgcode/variation: T1033+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  		• Topmark Coding: MAX1558
  		• New Product Press Release 2004-07-01 

    Related Products
    MAX1946 Single USB Switch with Autoreset and Fault Blanking in Tiny TDFN
    MAX1940 Triple USB Switch with Autoreset and Fault Blanking
    MAX8586 Single 1.2A USB Switch in 3mm x 3mm TDFN
    MAX1562, MAX1562H, MAX1563 Programmable, 4A, USB, Current-Limited Switches with Autoreset and Fault Blanking
    MAX1823, MAX1823A, MAX1823B, MAX1823H Dual USB Switch with Fault Blanking and Autoreset

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    Document Ref.: 19-3128; Rev 2; 2008-03-11
    This page last modified: 2008-03-11


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