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Maxim > Products > [Power and Battery Management] 
MAX1722, MAX1723, MAX1724
1.5µA IQ, Step-Up DC-DC Converters in Thin SOT23-5


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 304kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX1722/MAX1723/MAX1724 compact, high-efficiency, step-up DC-DC converters are available in tiny, 5-pin thin SOT23 packages. They feature an extremely low 1.5µA quiescent supply current to ensure the highest possible light-load efficiency. Optimized for operation from one to two alkaline or nickel-metal-hydride (NiMH) cells, or a single Li+ cell, these devices are ideal for applications where extremely low quiescent current and ultra-small size are critical.

Built-in synchronous rectification significantly improves efficiency and reduces size and cost by eliminating the need for an external Schottky diode. All three devices feature a 0.5Ω N-channel power switch. The MAX1722/MAX1724 also feature proprietary noise-reduction circuitry, which suppresses electromagnetic interference (EMI) caused by the inductor in many step-up applications. The family offers different combinations of fixed or adjustable outputs, shutdown, and EMI reduction (see Selector Guide).

An evaluation kit is available:  MAX1724EVKIT  

Key Features   Applications/Uses
  • Up to 90% Efficiency
  • No External Diode or FETs Needed
  • 1.5µA Quiescent Supply Current
  • 0.1µA Logic-Controlled Shutdown
  • ±1% Output Voltage Accuracy
  • Fixed Output Voltage (MAX1724) or Adjustable Output Voltage (MAX1722/MAX1723)
  • Up to 150mA Output Current
  • 0.8V to 5.5V Input Voltage Range
  • 0.91V Guaranteed Startup (MAX1722/MAX1724)
  • Internal EMI Suppression (MAX1722/MAX1724)
  • Thin SOT23-5 Package (1.1mm max Height)

 
  		• Digital Still Cameras
  		• Low-Power Handheld Instruments
  		• MP3 Players
  		• Pagers
  		• PDAs and Other Handheld Devices
  		• Personal Medical Devices
  		• Remote Controls
  		• Remote Wireless Transmitters
  		• Single-Cell Battery-Powered Devices

    Key Specifications:  Step-Up Switching Regulators
    Part Number VIN
    (V)    		 VIN
    (V)    		 VOUT
    (V)    		 VOUT
    (V)    		 Preset VOUT
    (V)    		 Max. IOUT
    (A)    		 Max. IOUT
    (A)    		 Output Adjust. Method DC-DC Outputs Package/Pins Smallest Available Pckg.
    (mm2)    		 Price
    min max min max ≥ ≤ max w/pins See Notes
    MAX1722  0.8 5.5 2 5.5 - 0.15 0.15 Resistor 1
    TSOT/5
    		 8 $1.45 @1k
    MAX1723  2 5.5 - Resistor
    TSOT/5
    		 $1.45 @1k
    MAX1724  2.7 5
    2.7
    3
    3.3
    5
    		 Preset
    TSOT/5
    		 $1.45 @1k
    See All Step-Up Switching Regulators (91)

    Diagram
    MAX1722: Pin Configuration
    Pin Configuration

    MAX1723, MAX1724: Pin Configuration
    Pin Configuration

    Application Notes
  		• Application Note 3241: Charging Batteries Using USB Power - MAX1722
  		• Application Note 3425: Converter Boosts One-Cell Battery Voltage to 50V - MAX1724

    Evaluation Kits
  		• MAX1724EVKIT

    Reliability Reports
  		• Reliability Report: MAX1724.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: 1-20 of 20

    MAX1722 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1722EZK+    
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1722EZK-T    
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1722EZK+T    
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1723 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1723EZK+  
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1723EZK-T    
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1723EZK+T    
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1724 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1724EZK27+  
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1724EZK30+  
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1724EZK30    
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1724EZK33+  
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1724EZK33    
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1724EZK50+  
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1724EZK27-T    
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1724EZK30-T    
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1724EZK33-T    
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1724EZK50-T    
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5-1*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1724EZK33+T    
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1724EZK27+T    
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1724EZK30+T    
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1724EZK50+T    
    		Active TSOT;5 pin;8 mm²
    Outline Drawing: 21-0113 (PDF)
    Land Pattern: 90-0241 (PDF)
    Use pkgcode/variation: Z5+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

    More Information
  		• Topmark Coding: MAX1722 MAX1723 MAX1724
  		• New Product Press Release 2001-08-31  2001-08-02 

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

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     Application Notes 
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     Engineering Journals 
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    Document Ref.: 19-1735; Rev 0; 2001-07-31
    This page last modified: 2009-10-15


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