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Maxim > Products > Power and Battery Management 
MAX8865R, MAX8865S, MAX8865T, MAX8866R, MAX8866S, MAX8866T
Dual, Low-Dropout, 100mA Linear Regulators

Dual 100mA LDOs Fit in Only 0.024 Sq. Inch and 1.11mm Height


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Data Sheet
FULL DATA SHEET (PDF, 184kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX8865 and MAX8866 dual, low-dropout linear regulators operate from a +2.5V to +5.5V input range and deliver up to 100mA. At 200mA total load, the PMOS pass transistors keep the supply current at 145µA, making these devices ideal for battery-operated portable equipment such as cellular phones, cordless phones, and modems.

The devices feature Dual Mode™ operation: their output voltages are preset (at 3.15V for the "T" versions, 2.84V for the "S" versions, or 2.80V for the "R" versions) or can be adjusted with external resistor dividers. Other features include independent low-power shutdown, short-circuit protection, thermal shutdown protection, and reverse battery protection. The MAX8866 also includes an auto-discharge function, which actively discharges the selected output voltage to ground when the device is placed in shutdown mode. Both devices come in a miniature 8-pin µMAX® package.

Key Features   Applications/Uses
  • Low Cost
  • Low, 55mV Dropout Voltage @ 50mA IOUT
  • Low, 105µA No-Load Supply Current
  • Low, 145µA Operating Supply Current (even in dropout)
  • Low, 350µVRMS Output Noise
  • Independent, Low-Current Shutdown Control
  • Thermal Overload Protection
  • Output Current Limit
  • Reverse Battery Protection
  • Dual Mode Operation: Fixed or Adjustable (1.25V to 5.5V) Outputs

 
  		• Audio Systems
  		• Cordless Phones
  		• Electronic Planners
  		• Handheld Instruments (PDAs, Palmtops)
  		• Modems
  		• Palmtop Computers
  		• PCMCIA Cards
  		• PCS Telephones

    Key Specifications:   Linear Regulators
    Part Number Regulators per Pkg. Min. VIN (V) Max. VIN (V) Preset VOUT (V) Min. Adjustable VOUT (V) Max. Adjustable VOUT (V) Typ. VDROPOUT@ Rated ILOAD (V) Rated ILOAD (mA) Max. ICC (µA) Low Battery/ Power Fail Output Watchdog Reverse Battery Protection Package Operating Temp. Range (°C) Price**
    MAX8865  2 2.5 5.5 2.8
    2.84
    3.15     		1.3 5.5 0.11 100 270 No No Yes uMAX/8 -40 to +85 $1.22 @ 1k
    MAX8866  1.5 $1.22 @ 1k
    See All Linear Regulators (141)
    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.

    Diagram
    MAX8865R, MAX8865S, MAX8865T, MAX8866R, MAX8866S, MAX8866T: Typical Operating Circuit
    Typical Operating Circuit

    Application Notes
  		• Application Note 751: Linear Regulators in Portable Applications - MAX8865
  		• Application Note 1000: Battery-Switchover Circuit Accommodates 3V Systems - MAX8865S

    Evaluation Kits
    none

    Design Guides
  		• A/D Converters (PDF)
  		• Reference (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: 1-22 of 22

    MAX8865R Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8865REUA+  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8865REUA+T  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8865REUA  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8865REUA-T  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8865S Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8865SEUA-T  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8865SEUA  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8865T Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8865TEUA  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8865TEUA-T  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8865TEUA+T  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8865TEUA+  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8866R Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8866REUA+  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8866REUA+T  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8866REUA  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8866REUA-T  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8866S Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8866SEUA+  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8866SEUA+T  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8866SEUA-T  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8866SEUA  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8866T Free
    Sample    		 Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8866TEUA+  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8866TEUA+T  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8866TEUA  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8866TEUA-T  
    		uMAX;8 pin;
    Dwg: 21-0036 (PDF)
    Use pkgcode/variation: U8-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis

    More Information
  		• MAX1692Power Supply Cookbook

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    •  QuickView   Technical Documents   Ordering Info   More Information  
     Description 
     Key Features 
     Applications/Uses 
     Key Specifications 
     Diagram 

    		 Data Sheet 
     Application Notes 
     Design Guides 
     Engineering Journals 
     Reliability Reports 
     Software/Models 
     Evaluation Kits 

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    Document Ref.: 19-0485; Rev 0; 1996-04-01
    This page last modified: 2007-11-06




             


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