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Maxim > Products > [Power and Battery Management] 
MAX1686, MAX1686H
3V to 5V Regulating Charge Pumps for SIM Cards

1MHz Charge Is Ideal for Cellular Phones


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 168kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX1686 provides power for dual-voltage subscriber ID module (SIM) cards in portable applications such as GSM cellular phones. Designed to reside in the portable unit (cellular phone handset), the 1MHz charge pump converts a 2.7V to 4.2V input to regulated 5V output. The MAX1686H has a nominal output voltage of 5.0V, while the MAX1686 is set to 4.75V to reduce SIM card current drain. The charge pump has only 45µA quiescent supply current, which reduces to 3µA when a 3V-capable SIM card is being powered and the charge pump is disabled. An internal input/output shorting switch provides power for 3V SIM cards.

The MAX1686/MAX1686H require only three external capacitors around their space-saving, thin (1mm) 8-pin µMAX® packages.

Key Features   Applications/Uses
  • 2.7V to 4.2V Input Range
  • 12mA min Charge-Pump Output Current
  • 45µA Quiescent Supply Current
  • 0.1µA Supply Current in Shutdown Mode
  • 5.0V Regulated Charge-Pump Output (MAX1686H)
  • 4.75V Regulated Charge-Pump Output (MAX1686)
  • Input-Output Shorting Switch for 3V Cards
  • Small External Components (Uses a 0.047µF, 0.1µF, and a 2.2µF Capacitor)
  • Output Driven to Ground in Shutdown Mode
  • Super-Small 8-Pin µMAX Package
  • Soft-Start and Short-Circuit Protection
  • Regulated charge pump for SIM cards nominal output voltage of 5.0V (MAX1686H)

 
  		• GSM Cellular Phones
  		• PCS Phones
  		• Personal Communicators
  		• Portable POS Terminals

    Key Specifications:  Charge Pumps
    Part Number Topology VIN
    (V)    		 VIN
    (V)    		 ICC
    (mA)    		 Unadj. VOUT
    (V)    		 IOUT
    (A)    		 Oper. Freq.
    (kHz)    		 Features Package/Pins Smallest Available Pckg.
    (mm2)    		 Oper. Temp.
    (°C)    		 Price
    min max max typ max w/pins See Notes
    MAX1686 
    Doubler
    Regulated
    		 2.7 4.2 0.1 4.75 0.012 1000 Shutdown
    µMAX/8
    		 16 -40 to +85 $1.45 @1k
    MAX1686H  5
    µMAX/8
    		 $1.45 @1k
    See All Charge Pumps (48)

    Diagram
    MAX1686, MAX1686H: Typical Operating Circuit
    Typical Operating Circuit

    Reliability Reports
  		• Reliability Report: MAX1686H.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: 1-8 of 8

    MAX1686 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1686EUA    
    		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
    MAX1686EUA-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
    MAX1686EUA+  
    		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
    MAX1686EUA+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
    MAX1686H Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1686HEUA    
    		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
    MAX1686HEUA-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
    MAX1686HEUA+  
    		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
    MAX1686HEUA+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

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    Document Ref.: 19-1376; Rev 1; 1998-12-01
    This page last modified: 2007-06-01


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