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MAX8753
TFT LCD DC-DC Converter with Integrated Charge Pumps


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Status
Active: In Production.

Data Sheet
FULL DATA SHEET (PDF, 604kB)
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Description
The MAX8753 quadruple-output DC-DC converter provides the regulated voltages required by active-matrix, thin-film transistor (TFT), liquid-crystal displays (LCDs). It includes a high-power step-up regulator (VMAIN), two low-power charge pumps (VPOS and VNEG), and a low-voltage 300mA linear regulator (VLOGIC).

The step-up DC-DC converter is a high-frequency (1MHz) current-mode regulator with a built-in power MOSFET that allows the use of ultra-small inductors and ceramic capacitors. It provides fast transient response to pulsed loads and includes an automatic pulse-skipping mode that increases efficiency over a wide-load current range. The 1.5A current limit allows a +10V output at more than 300mA from a +3.3V input.

The two charge pumps independently regulate one positive and one negative output voltage. The positive charge pump is a voltage tripler that accepts an input voltage up to +13V and delivers a 20mA output up to +28V without external switches or diodes. The negative charge pump inverts an input voltage up to +24V and delivers a 20mA negative output using external diodes.

The logic linear regulator converts the IC's +2.6V-to-+5.5V input to a regulated +2.5V or adjustable output. The MAX8753 is available in a 28-pin thin QFN package with a maximum thickness of 0.8mm for ultra-thin LCD panel design.

An evaluation kit is available:  MAX8753EVKIT  

Key Features   Applications/Uses
  • 3 Integrated DC-DC Converters, 1 LDO
  • 1MHz Current-Mode PWM Boost Regulator
    Up to +13V Main High-Power Output
    ±1% Accuracy
    High Efficiency (90%)
  • Dual Charge-Pump Outputs
    No External Diodes for Positive Charge Pump
    Up to +28V Positive Charge-Pump Output
    Negative Charge-Pump Output
  • 300mA Logic Linear Regulator
  • +2.6V to +5.5V Input Operating Range
  • 0.8mA Quiescent Current
  • Internal Supply Sequencing and Soft-Start
  • Thermal Protection
  • Ultra-Thin, 28-Pin TQFN Package (0.8mm max)

     
  • Car-Navigation Displays
  • LCD Monitors
  • Notebook Computers, PDAs

    Diagram
    MAX8753: Minimal Operating Circuit
    Minimal Operating Circuit

    Evaluation Kits
  • MAX8753EVKIT

    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: 1-4 of 4

    MAX8753 Free
    Sample
    Buy Status
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX8753ETI-T    
    Active

    Land Pattern: Not Available

    -40°C to +85°C See data sheet
    MAX8753ETI+T    
    Active

    Land Pattern: Not Available

    -40°C to +85°C See data sheet
    MAX8753ETI+  
    Active TQFN;28 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0026 (PDF)
    Use pkgcode/variation: T2855+6*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX8753ETI    
    Active TQFN;28 pin;26 mm²
    Outline Drawing: 21-0140 (PDF)
    Land Pattern: 90-0026 (PDF)
    Use pkgcode/variation: T2855-6*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis

    Related Products
    MAX1778, MAX1880, MAX1881, MAX1882, MAX1883, MAX1884, MAX1885 Quad-Output TFT LCD DC-DC Converters with Buffer

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    Document Ref.: 19-3919; Rev 0; 2006-02-08
    This page last modified: 2006-02-08


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