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Maxim > Products > [Power and Battery Management] 
MAX891L, MAX892L
Current-Limited, High-Side P-Channel Switches with Thermal Shutdown

Low-Resistance P-Channel Switches with Adjustable, Accurate Current Limit Protects Systems and USB


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 120kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX891L/MAX892L smart, low-voltage, P-channel, MOSFET power switches are intended for high-side load-switching applications. These switches operate with inputs from 2.7V to 5.5V, making them ideal for both 3V and 5V systems. Internal current-limiting circuitry protects the input supply against overload. Thermal-overload protection limits power dissipation and junction temperatures.

The MAX891L/MAX892L's maximum current limits are 500mA and 250mA, respectively. The current limit through the switch is programmed with a resistor from SET to ground. When the switch is on, the quiescent supply current is a low 13µA. When the switch is off, the quiescent current decreases to 0.1µA.

The MAX891L/MAX892L are available in 8-pin µMAX® packages.

Key Features   Applications/Uses
  • Ultra-Small µMAX Package-Only 1.11mm High
  • 2.7V to 5.5V Input Range
  • Programmable Current Limit
  • Low 13µA Quiescent Current at VIN = 3.3V, 0.1µA Switch Off
  • Thermal Shutdown
  • FAULT-bar Indicator Output
  • On-Resistances:
    • 0.12Ω (MAX891L)
    • 0.25Ω (MAX892L)

  
  		• Access Bus Slots
  		• PCMCIA Slots
  		• Portable Equipment

    Key Specifications:  USB Power Switches
    Part Number Switches ILOAD
    (A)    		 RON
    (Ω)    		 Fault Indicator VIN
    (V)    		 Package/Pins Smallest Available Pckg.
    (mm2)    		 Oper. Temp.
    (°C)    		 Price
    max typ max w/pins See Notes
    MAX891L  1 0.5 0.12 Yes 2.7 to 5.5
    µMAX/8
    		 16 -40 to +85 $1.32 @1k
    MAX892L  0.25 0.25
    µMAX/8
    		 $1.32 @1k
    See All USB Power Switches (28)

    Diagram
    MAX891L, MAX892L: Typical Operating Circuit
    Typical Operating Circuit

    Design Guides
  		• Amplifiers and Sensors (PDF)
  		• Video (PDF)

    Reliability Reports
  		• Reliability Report: MAX891L.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: 1-10 of 10

    MAX891L Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX891LC/D    
    		Active DICE SALES;NA pin;0 mm²

    Land Pattern: Not Applicable
    Use pkgcode/variation: DICE*
    		See data sheet
    MAX891LEUA    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX891LEUA-T    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX891LEUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX891LEUA+T    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX892L Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX892LC/D    
    		Active DICE SALES;NA pin;0 mm²

    Land Pattern: Not Applicable
    Use pkgcode/variation: DICE*
    		See data sheet
    MAX892LEUA    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX892LEUA-T    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX892LEUA+  
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX892LEUA+T    
    		Active µMAX;8 pin;16 mm²
    Outline Drawing: 21-0036 (PDF)
    Land Pattern: 90-0092 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    Notes and Comments
    • 150m/0.5A (MAX891L)
    • 300m/0.25A (MAX892L)

    Related Products
    MAX869L 2A, Current-Limited, High-Side P-Channel Switch with Thermal Shutdown
    MAX890, MAX890L 1.2A, Current-Limited, High-Side P-Channel Switch with Thermal Shutdown
    MAX894L, MAX895L Dual, Current-Limited, High-Side P-Channel Switches with Thermal Shutdown

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    Document Ref.: 19-1223; Rev 0; 1997-06-01
    This page last modified: 2008-07-14


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