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Maxim > Products > [Power and Battery Management] 
MAX8890
Integrated Cellular RF-Section Power-Management IC


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 240kB)
Download this datasheet in PDF formatDownload   Send this datasheet to any email addressE-Mail

Description
The MAX8890 is a power-management IC intended for cellular handsets using a single lithium-ion (Li+) cell battery with input voltages from +2.5V to +5.5V. The IC contains three identical, low-noise, low-dropout (LDO) linear regulators to provide all of the supply voltage requirements for the RF portion of the handset.

The first LDO is intended to power the transmitter, receiver, and synthesizer. The second LDO is intended to power the TCXO, and high-power voltage-controlled oscillators (VCOs). The third LDO is intended to power the UHF offset VCO.

Each LDO has its own individual enable (ON/active-low OFF) control to maximize design flexibility. The reference is powered on if any of the enable inputs (EN1, EN2, EN3) are logic high. The high-accuracy output voltage of each LDO is preset at an internally trimmed voltage (1.8V to 3.3V in 50mV increments). Each LDO is capable of supplying 100mA with a low 50mV dropout and is optimized for low noise and high crosstalk-isolation. Designed with internal P-channel MOSFET pass transistors, the MAX8890's low 180µA operating supply current is independent of load.

Other features include short-circuit and thermal overload protection. The MAX8890 is available in a compact, high-power, 12-pin 4mm x 4mm QFN package with a metal pad on the underside.

Key Features   Applications/Uses
  • Three 100mA Low-Dropout Linear Regulators
  • Low 50mV Dropout Voltage at 100mA
  • ±1% Output Voltage Accuracy Over Temperature
  • Preset 1.8V to 3.3V Output Voltages (in 50mV Increments)
  • Low 45µVRMS Output Voltage Noise
  • Low 180µA Operating Supply Current
  • 2.5V to 5.5V Input Voltage Range
  • 67dB PSRR
  • 10µVP-P Channel-to-Channel Crosstalk
  • Short-Circuit Protection
  • Thermal Overload Protection
  • 0.01µA Shutdown Current
  • Tiny 12-Pin 4mm x 4mm QFN Package

 
  		• CCD Imaging

Diagram
MAX8890: Typical Operating Circuit
Typical Operating Circuit

Application Notes
  		• Application Note 898: Selecting LDO Linear Regulators for Cellphone Designs - MAX8890

    Reliability Reports
  		• Reliability Report: MAX8890.pdf
  		• Show FIT data 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

    MAX8890 Free
    Sample    		 Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    		Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8890ETCJJJ    
    		Active TQFN;12 pin;16.8 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0068 (PDF)
    Use pkgcode/variation: T1244-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8890ETCJJJ-T    
    		Active TQFN;12 pin;16.8 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0068 (PDF)
    Use pkgcode/variation: T1244-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8890ETCAAA+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX8890ETCAAA+    
    		Active TQFN;12 pin;16.8 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0068 (PDF)
    Use pkgcode/variation: T1244+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8890ETCJJJ+    
    		Active TQFN;12 pin;16.8 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0068 (PDF)
    Use pkgcode/variation: T1244+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8890ETCJJJ+T    
    		Active TQFN;12 pin;16.8 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0068 (PDF)
    Use pkgcode/variation: T1244+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8890ETCAAA    
    		Active TQFN;12 pin;16.8 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0068 (PDF)
    Use pkgcode/variation: T1244-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8890ETCAAA-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX8890ETCAKM    
    		Active TQFN;12 pin;16.8 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0068 (PDF)
    Use pkgcode/variation: T1244-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8890ETCAKM-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX8890ETCBBB    
    		Active TQFN;12 pin;16.8 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0068 (PDF)
    Use pkgcode/variation: T1244-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8890ETCBBB-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX8890ETCDDD    
    		Active TQFN;12 pin;16.8 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0068 (PDF)
    Use pkgcode/variation: T1244-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8890ETCDDD-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX8890ETCGGG    
    		Active TQFN;12 pin;16.8 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0068 (PDF)
    Use pkgcode/variation: T1244-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8890ETCGGG-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX8890ETCMMM    
    		Active TQFN;12 pin;16.8 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0068 (PDF)
    Use pkgcode/variation: T1244-4*
    		-40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX8890ETCMMM-T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet
    MAX8890ETCDDD+    
    		Active TQFN;12 pin;16.8 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0068 (PDF)
    Use pkgcode/variation: T1244+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8890ETCDDD+T    
    		Active TQFN;12 pin;16.8 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0068 (PDF)
    Use pkgcode/variation: T1244+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8890ETCABK+    
    		Active TQFN;12 pin;16.8 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0068 (PDF)
    Use pkgcode/variation: T1244+4*
    		-40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8890ETCABK+T    
    		Active

    Land Pattern: Not Available

    		-40°C to +85°C See data sheet

    More Information
  		• Topmark Coding: MAX8890
  		• New Product Press Release 2001-08-16 

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    Document Ref.: 19-2075; Rev 2; 2002-11-24
    This page last modified: 2008-10-07


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