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Maxim > Products > [Wireless and RF] 
MAX8805, MAX8805W, MAX8805X, MAX8805Y, MAX8805Z
600mA/650mA PWM Step-Down Converters in 2mm x 2mm WLP for WCDMA PA Power

Small (4mm)² Package Provides Power and Bias to 2 WCDMA PA Modules


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 596kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX8805W/MAX8805X/MAX8805Y/MAX8805Z high-frequency step-down converters are optimized for dynamically powering the power amplifier (PA) in WCDMA or NCDMA handsets. The devices integrate a high-efficiency PWM step-down converter for medium- and low-power transmission, and a 60mΩ typical bypass FET to power the PA directly from the battery during high-power transmission. Dual 200mA low-noise, high-PSRR low-dropout regulators (LDOs) for PA biasing are also integrated.

Two switching frequency options are available (2MHz for the MAX8805W/MAX8805Y and 4MHz for the MAX8805X/MAX8805Z), allowing optimization for smallest solution size or highest efficiency. Fast switching allows the use of small ceramic 2.2µF input and output capacitors while maintaining low ripple voltage. The feedback network is integrated, further reducing external component count and total solution size.

The MAX8805W/MAX8805X/MAX8805Y/MAX8805Z use an analog input driven by an external DAC to control the output voltage linearly for continuous PA power adjustment. The REFIN to OUT gain is available in two options (2V/V for the MAX8805Y/MAX8805Z and 2.5V/V for the MAX8805W/MAX8805X). At high-duty cycle, the MAX8805W/MAX8805X/MAX8805Y/MAX8805Z automatically switch to the bypass mode, connecting the input to the output through a low-impedance (60mΩ typ) MOSFET. The user can also enable the bypass mode directly through a logic-control input.

The LDOs in the MAX8805W/MAX8805X/MAX8805Y/MAX8805Z are designed for low-noise operation (35µVRMS typ). Each LDO is individually enabled through its own logic control interface.

The MAX8805W/MAX8805X/MAX8805Y/MAX8805Z are available in a 16-bump, 2mm x 2mm WLP package (0.7mm max height).

An evaluation kit is available:  MAX8805WEVKIT  

Key Features   Applications/Uses
  • PA Step-Down Converter
    • 7.5µs (typ) Settling Time for 0.8V to 3.4V Output Voltage Change
    • Dynamic Output Voltage Setting from 0.4V to VBATT
    • 60mΩ pFET and 100% Duty Cycle for Low Dropout
    • 2MHz or 4MHz Switching Frequency
    • Low Output-Voltage Ripple
    • 600mA (MAX8805Y/MAX8805Z) or 650mA (MAX8805W/MAX8805X) Output Drive Capability
    • 2% Gain Accuracy
    • Tiny External Components
  • Dual Low-Noise LDOs
    • Low 35µVRMS (typ) Output Noise
    • High 70dB (typ) PSRR
    • Guaranteed 200mA Output Drive Capability
    • Individual ON/OFF Control
  • Low 0.1µA Shutdown Current
  • 2.7V to 5.5V Supply Voltage Range
  • Thermal Shutdown
  • Tiny 2mm x 2mm x 0.7mm WLP Package (4 x 4 Grid)

 
  		• Smartphones
  		• WCDMA/NCDMA Cellular Handsets
  		• Wireless PDAs

    Key Specifications:  Step-Down Switching Regulators
    Part Number VIN
    (V)    		 VIN
    (V)    		 VOUT
    (V)    		 VOUT
    (V)    		 Max. IOUT
    (A)    		 Max. IOUT
    (A)    		 Output Adjust. Method DC-DC Outputs Oper. Freq.
    (kHz)    		 Package/Pins Smallest Available Pckg.
    (mm2)    		 Price
    min max min max ≥ ≤ max w/pins See Notes
    MAX8805  2.7 5.5 0.4 5.5 0.65 0.65
    Dyn. REF In
    Resistor
    		 1 4000
    WLP/16
    		 4 $1.77 @1k
    See All Step-Down Switching Regulators (264)

    Diagram
    MAX8805Y, MAX8805Z
    MAX8805Y, MAX8805Z

    Evaluation Kits
  		• MAX8805WEVKIT

    Design Guides
  		• Communications (PDF)
  		• Power Management for Battery-Powered Equipment (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: 1-53 of 53

    MAX8805W Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8805WEWEAA+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805WEWEAC+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805WEWEAD+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805WEWEAE+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805WEWEBC+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805WEWEBD+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805WEWEBE+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805WEWECC+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805WEWECD+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805WEWECE+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805WEWEDD+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805WEWEEE+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805WEWEGG+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805WEWEEE+TC8E    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX8805X Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8805XEWEAA+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805XEWEAC+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805XEWEAD+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805XEWEAE+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805XEWEBC+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805XEWEBD+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805XEWEBE+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805XEWECC+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805XEWECD+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805XEWECE+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805XEWEDD+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805XEWEEE+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805XEWEGG+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805Y Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8805YEWEAA+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805YEWEAC+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805YEWEAD+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805YEWEAE+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805YEWEBC+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805YEWEBD+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805YEWEBE+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805YEWECC+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805YEWECD+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805YEWECE+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805YEWEDD+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805YEWEEE+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805YEWEGG+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805YEWEBG+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805Z Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8805ZEWEAA+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805ZEWEAC+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805ZEWEAD+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805ZEWEAE+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805ZEWEBC+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805ZEWEBE+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805ZEWECC+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805ZEWECD+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805ZEWECE+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805ZEWEDD+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805ZEWEEE+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8805ZEWEGG+T    
    		Active WLP;16 pin;4 mm²
    Outline Drawing: 21-0200 (PDF)
    Land Pattern: Not Available
    Use pkgcode/variation: W162B2+1*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis

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    Document Ref.: 19-0777; Rev 4; 2008-09-23
    This page last modified: 2008-09-23


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