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Maxim > Products > [Power and Battery Management] 
MAX8667, MAX8668
1.5MHz Dual Step-Down DC-DC Converters with Dual LDOs and Individual Enables

Save Power and Board Space Using the Industry's First Dual Step-Down DC-DC Converters with Dual Low-Input LDOs


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 396kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX8667/MAX8668 dual step-down converters with dual low-dropout (LDO) linear regulators are intended to power low-voltage microprocessors or DSPs in portable devices. They feature high efficiency with small external component size. The step-down converters are adjustable from 0.6V to 3.3V (MAX8668) or factory preset (MAX8667) with guaranteed output current of 600mA for OUT1 and 1200mA for OUT2. The 1.5MHz hysteretic-PWM control scheme allows for tiny external components and reduces no-load operating current to 100µA with all outputs enabled. Dual low-quiescent-current, low-noise LDOs operate down to 1.7V supply voltage. The MAX8667/MAX8668 have individual enables for each output, maximizing flexibility.

The MAX8667/MAX8668 are available in the space-saving, 3mm x 3mm, 16-pin thin QFN package.

An evaluation kit is available:  MAX8668EVKIT  

Key Features   Applications/Uses
  • Tiny, Thin QFN 3mm x 3mm Package
  • Individual Enables
  • Step-Down Converters
    • 600mA Guaranteed Output Current on OUT1
    • 1200mA Guaranteed Output Current on OUT2
    • Tiny Size 2.2µH Chip Inductor (0805)
    • Output Voltage from 0.6V to 3.3V (MAX8668)
    • Ultra-Fast Line and Load Transients
    • Low 25µA Supply Current Each
  • LDOs
    • 300mA Guaranteed
    • Low 1.7V Minimum Supply Voltage
    • Low Output Noise

 
  		• Cell Phones/Smartphones
  		• Digital Cameras, Camcorders
  		• Handheld Instruments
  		• PCMCIA Cards
  		• PDA and Palmtop Computers
  		• Portable MP3 and DVD Players

    Key Specifications:  Multifunction PMICs
    Part Number Primary Topology Monitor/Control Features DC-DC/Power Features VIN
    (V)    		 VIN
    (V)    		 VOUT
    (V)    		 VOUT
    (V)    		 Max. IOUT
    (A)    		 Max. IOUT
    (A)    		 Oper. Freq.
    (kHz)    		 Package/Pins Smallest Available Pckg.
    (mm2)    		 Price
    min max min max ≥ ≤ max w/pins See Notes
    MAX8667  Step-Down Shutdown
    Current Limit
    Fixed Freq./PWM
    Internal Pwr. FETs
    Soft Start
    Sync. Rectifier
    		 2.6 5.5 0.725 3.3 1.2 1.2 1500
    TQFN/16
    		 10 $2.95 @1k
    MAX8668  0.6
    TQFN/16
    		 $2.95 @1k
    See All Multifunction PMICs (83)

    Diagram
    MAX8667, MAX8668: Typical Operating Circuit
    Typical Operating Circuit

    Evaluation Kits
  		• MAX8668EVKIT

    Design Guides
  		• Communications (PDF)
  		• Power Management for Battery-Powered Equipment (PDF)

    Reliability Reports
  		• Reliability Report: MAX8668.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: 1-28 of 28

    MAX8667 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8667ETECQ+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX8667ETEJS+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX8667ETEAA+  
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8667ETEAA+T    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8667ETEAB+  
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8667ETEAB+T    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8667ETEAC+  
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8667ETEAC+T    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8667ETECQ+    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8667ETEHR+  
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8667ETEHR+T    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8667ETEJS+    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8668 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8668ETEW+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX8668ETEX+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX8668ETEA+  
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8668ETEA+T    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8668ETEP+  
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8668ETEP+T    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8668ETET+  
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8668ETET+T    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8668ETEW+  
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8668ETEX+  
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8668ETEV+T    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8668ETEV+    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8668ETEU+T    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8668ETEU+  
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8668ETEQ+T    
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8668ETEQ+  
    		Active TQFN;16 pin;10 mm²
    Outline Drawing: 21-0136 (PDF)
    Land Pattern: 90-0031 (PDF)
    Use pkgcode/variation: T1633+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  		• Topmark Coding: MAX8667 MAX8668
  		• New Product Press Release 2007-04-30 

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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 
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    Document Ref.: 19-0784; Rev 1; 2007-08-16
    This page last modified: 2007-09-28


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