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Maxim > Products > [Analog Switches and Multiplexers] 
MAX4789, MAX4790, MAX4791, MAX4792, MAX4793, MAX4794
200mA/250mA/300mA Current-Limit Switches


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 188kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX4789–MAX4794 family of switches feature internal current limiting to prevent damage to host devices due to faulty load conditions. These analog switches have a low 0.2Ω on-resistance and operate from 2.3V to 5.5V input voltage range. They are available with guaranteed 200mA, 250mA, and 300mA current limits, making them ideal for SDIO and other load switching applications.

When the switch is on and a load is connected to the port, a guaranteed blanking time of 14ms ensures that the transient voltages settle down. If after this blanking time the load current is greater than the current limit, the MAX4789, MAX4791, and MAX4793 enter a latch-off state where the switch is turned off and active-low FLAG is issued to the microprocessor. The switch can be turned on again by cycling the power or the ON pin.

The MAX4790, MAX4792, and MAX4794 have an autoretry feature where the switch turns off after the blanking time and then continuously checks to see if the overload condition is present. The switch remains on after the overload condition disappears.

The MAX4789-MAX4794 are available in 6-pin 3mm x 3mm TDFN and tiny space-saving 4-pin SOT143 packages. The MAX4789/MAX4791/MAX4793 are also available in a tiny 5-pin SOT23 package. For lower current current-limiting switches, refer to the MAX4785-MAX4788 data sheet.

Key Features   Applications/Uses
  • Guaranteed Current Limit: 200mA, 250mA, 300mA
  • Thermal-Shutdown Protection
  • Reverse Current Protection
  • 0.2Ω On-Resistance
  • 14ms Guaranteed Blanking Time
  • Active-Low FLAG Function (MAX4789/MAX4791/MAX4793)
  • 80µA Supply Current
  • 8µA Latch-Off Current (MAX4789/MAX4791/MAX4793)
  • 0.01µA Shutdown Current
  • 2.3V to 5.5V Supply Range
  • Undervoltage Lockout
  • Fast Current-Limit Response Time (5µs)
  • TDFN and SOT23/SOT143 Packages

 
  		• Cell Phones
  		• Global Positioning Systems (GPS)
  		• Handheld Devices
  		• PDAs and Palmtop Devices
  		• SDIO

    Key Specifications:  Current Limit Switches
    Part Number Current Limit
    (mA)    		 Functions ILOAD
    (A)    		 RON
    (Ω)    		 VIN
    (V)    		 Fault Indicator Fault Blanking Timeout
    (ms)    		 Package/Pins Smallest Available Pckg.
    (mm2)    		 Oper. Temp.
    (°C)    		 Price
    max typ max w/pins See Notes
    MAX4789  200
    FLAG function
    Fault Blanking
    		 0.2 0.2 2.3 to 5.5 Yes 14
    SOT/4
    SOT/5
    TDFN-EP/6
    		 8 -40 to +85 $0.70 @1k
    MAX4790  200
    Auto Retry
    Fault Blanking
    		 0.2 0.2 No
    SOT/4
    TDFN-EP/6
    		 -40 to +85 $0.78 @1k
    MAX4791  250
    FLAG function
    Fault Blanking
    		 0.25 - Yes
    SOT/4
    SOT/5
    TDFN-EP/6
    -40 to +85
    -40 to +105
    		 $0.70 @1k
    MAX4792  250
    Auto Retry
    Fault Blanking
    		 0.25 0.2 No
    SOT/4
    TDFN-EP/6
    		 -40 to +85 $0.78 @1k
    MAX4793  300
    FLAG function
    Fault Blanking
    		 0.3 0.2 Yes
    SOT/4
    SOT/5
    TDFN-EP/6
    		 -40 to +85 $0.70 @1k
    MAX4794  300
    Auto Retry
    Fault Blanking
    		 0.3 0.2 No
    SOT/4
    TDFN-EP/6
    		 -40 to +85 $0.78 @1k
    See All Current Limit Switches (27)

    Diagram
    MAX4789, MAX4790, MAX4791, MAX4792, MAX4793, MAX4794: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  		• Application Note 3936: The Maxim USB Laboratory - MAX4793, MAX4793, MAX4793

    Design Guides
  		• Signal Routing & Protection (PDF)

    Reliability Reports
  		• Reliability Report: MAX4792.pdf
  		• Show FIT data for:
  		• Request Reliability Report for:

    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: 1-48 of 48

    MAX4789 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4789EUS  
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4789EUS-T    
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4789EUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4789EUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4789EUK  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4789EUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4789ETT  
    		Active TDFN-EP;6 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0058 (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4789ETT+  
    		Active TDFN-EP;6 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0058 (PDF)
    Use pkgcode/variation: T633+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4789ETT+T    
    		Active TDFN-EP;6 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0058 (PDF)
    Use pkgcode/variation: T633+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4789ETT-T    
    		Active TDFN-EP;6 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0058 (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4790 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4790EUS  
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4790EUS+  
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4790EUS-T    
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4790EUS+T    
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4790ETT  
    		Active TDFN-EP;6 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0058 (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4790ETT-T    
    		Active TDFN-EP;6 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0058 (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4791 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4791EUS  
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4791EUS-T    
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4791EUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4791EUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4791EUK/V+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4791EUK/V+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4791EUK  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4791EUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4791ETT  
    		Active TDFN-EP;6 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0058 (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4791ETT-T    
    		Active TDFN-EP;6 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0058 (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4792 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4792EUS  
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4792EUS-T    
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4792ETT  
    		Active TDFN-EP;6 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0058 (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4792ETT-T    
    		Active TDFN-EP;6 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0058 (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4793 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4793EUS+T    
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4793EUS+  
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4793EUS    
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4793EUS-T    
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4793EUK    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4793EUK+  
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4793EUK-T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4793EUK+T    
    		Active SOT;5 pin;9 mm²
    Outline Drawing: 21-0057 (PDF)
    Land Pattern: 90-0174 (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4793ETT  
    		Active TDFN-EP;6 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0058 (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4793ETT-T    
    		Active TDFN-EP;6 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0058 (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4794 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4794EUS  
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4794EUS+  
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4794EUS-T    
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4794EUS+T    
    		Active SOT;4 pin;8 mm²
    Outline Drawing: 21-0052 (PDF)
    Land Pattern: 90-0183 (PDF)
    Use pkgcode/variation: U4+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4794ETT+    
    		Active TDFN-EP;6 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0058 (PDF)
    Use pkgcode/variation: T633+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4794ETT+T    
    		Active TDFN-EP;6 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0058 (PDF)
    Use pkgcode/variation: T633+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4794ETT  
    		Active TDFN-EP;6 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0058 (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4794ETT-T    
    		Active TDFN-EP;6 pin;10 mm²
    Outline Drawing: 21-0137 (PDF)
    Land Pattern: 90-0058 (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis

    Related Products
    MAX4785, MAX4786, MAX4787, MAX4788 50mA/100mA Current-Limit Switches

    More Like This: View Product Families for Similar Products

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     Description 
     Key Features 
     Applications/Uses 
     Key Specifications 
     Diagram 

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     Application Notes 
     Design Guides 
     Engineering Journals 
     Reliability Reports 
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    Document Ref.: 19-2663; Rev 3; 2008-12-15
    This page last modified: 2008-12-16


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