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Maxim > Products > Analog Switches and Multiplexers 
MAX4795, MAX4796, MAX4797, MAX4798
450mA/500mA Current-Limit Switches


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Data Sheet
FULL DATA SHEET (PDF, 296kB)
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Description
The MAX4795-MAX4798 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 a 2.0V to 4.5V input voltage range. They are available with guaranteed 450mA and 500mA 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 the transient voltages settle down. If after this blanking time, the load current is greater than the current limit, the MAX4795 and MAX4797 switches are turned off and FLAG-bar is issued to the microprocessor. The switch can be turned on again by cycling the power or the ON input.

The MAX4796 and MAX4798 have an autoretry feature where the switch turns off and issues a FLAG-bar to the microprocessor 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 and FLAG-bar deasserts.

The MAX4795-MAX4798 are available in tiny, space-saving, 5-pin SOT23 and 6-pin TDFN (3mm x 3mm) packages.

Key Features   Applications/Uses
  • Guaranteed Current Limit: 450mA and 500mA
  • Thermal-Shutdown Protection
  • Reverse-Current Protection
  • 0.2Ω On-Resistance
  • 14ms Guaranteed Blanking Time
  • FLAG-bar Function
  • Autoretry (MAX4796/MAX4798)
  • 80µA Supply Current
  • 6µA Latchoff Current (MAX4795/MAX4797)
  • 0.01µA Shutdown Current
  • +2V to +4.5V Supply Range
  • Fast Current-Limit Response Time
  • Tiny SOT23 and TDFN Packages
  • UL Certification Pending

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

    Key Specifications:   Current Limit Switches
    Part Number Current Limit (mA) Functions Max. Load Current (A) RON (typ) (Ω) Switch Op. Voltage Range (V) Fault Indicator Fault Blanking Timeout (ms) RoHS Available Package Operating Temp. Range (°C) Price**
    MAX4795  450  -  0.45 0.2 2.0 to 4.5 Yes 14 Yes SOT-23/5
    THIN QFN (Dual)/6     		-40 to +85 $0.80 @ 1k
    MAX4796  450
    •Auto Retry
    		 0.45 $0.80 @ 1k
    MAX4797  500  -  0.5 $0.80 @ 1k
    MAX4798  500
    •Auto Retry
    		 0.5 $0.80 @ 1k
    See All Current Limit Switches (27)
    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 prices and delivery, please see the price and availability page or contact an authorized distributor.

    Evaluation Kits
    none

    Design Guides
  		• MUX & SWITCH (PDF)

    Reliability Reports
  		• 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: 1-27 of 27

    MAX4795 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4795EUK+T  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4795EUK+  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4795EUK  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4795EUK-T  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4795ETT  
    		TDFN;6 pin;
    Dwg: 21-0137I (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C See data sheet
    MAX4795ETT-T  
    		TDFN;6 pin;
    Dwg: 21-0137I (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C See data sheet
    MAX4796 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4796EUK+  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4796EUK+T  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4796EUK  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4796EUK-T  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4796ETT  
    		TDFN;6 pin;
    Dwg: 21-0137I (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C See data sheet
    MAX4796ETT-T  
    		TDFN;6 pin;
    Dwg: 21-0137I (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C See data sheet
    MAX4797 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4797EUK  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4797EUK-T  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4797ETT+  
    		TDFN;6 pin;
    Dwg: 21-0137I (PDF)
    Use pkgcode/variation: T633+2*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX4797ETT+T  
    		TDFN;6 pin;
    Dwg: 21-0137I (PDF)
    Use pkgcode/variation: T633+2*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX4797ETT  
    		TDFN;6 pin;
    Dwg: 21-0137I (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C See data sheet
    MAX4797ETT-T  
    		TDFN;6 pin;
    Dwg: 21-0137I (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C See data sheet
    MAX4798 Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX4798EUK+T  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4798EUK+  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4798EUK+TG05  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5+2*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX4798EUK  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4798EUK-T  
    		SOT-23;5 pin;
    Dwg: 21-0057F (PDF)
    Use pkgcode/variation: U5-2*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX4798ETT+  
    		TDFN;6 pin;
    Dwg: 21-0137I (PDF)
    Use pkgcode/variation: T633+2*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX4798ETT+T  
    		TDFN;6 pin;
    Dwg: 21-0137I (PDF)
    Use pkgcode/variation: T633+2*
    		-40°C to +85°C See data sheet
    Materials Analysis
    MAX4798ETT  
    		TDFN;6 pin;
    Dwg: 21-0137I (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C See data sheet
    MAX4798ETT-T  
    		TDFN;6 pin;
    Dwg: 21-0137I (PDF)
    Use pkgcode/variation: T633-2*
    		-40°C to +85°C See data sheet

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    Document Ref.: 19-2944; Rev 0; 2003-08-13
    This page last modified: 2007-08-13




             


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