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MAX1513, MAX1514
TFT-LCD Power-Supply Controllers

TFT-LCD Power-Supply Controllers Provide Complete Power-Supply Solutions for Active-Matrix Thin-Film Transistor (TFT) Liquid-Crystal Displays (LCDs)


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Data Sheet
FULL DATA SHEET (PDF, 544kB)
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Description
The MAX1513/MAX1514 provide complete power-supply solutions for active-matrix thin-film transistor (TFT) liquid-crystal displays (LCDs). Both devices include a high-performance step-up regulator controller, three linear- regulator controllers, and an adjustable delay block for startup sequencing. The MAX1513 includes an additional linear-regulator controller and a high-performance buffer amplifier. The MAX1513/MAX1514 can operate from 2.7V to 5.5V input supplies and provide overload protection with timer delay latch on all the regulated outputs.

The step-up regulator controller drives an external N-channel MOSFET to generate the regulated supply voltage for the panel source-driver ICs. Its current-mode control architecture provides fast transient response to pulsed loads. The high switching frequency (up to 1.5MHz) allows the use of ultra-small inductors and ceramic capacitors while achieving efficiencies over 85% using lossless current sensing. The internal soft-start limits the input surge current during startup.

The gate-on and gate-off linear-regulator controllers of the MAX1513/MAX1514 provide regulated TFT gate-on and gate-off supplies. The gate-on supply is activated after an adjustable delay following the step-up regulator. The logic linear-regulator controller can be used to create a low-voltage logic supply. The gamma linear-regulator controller of the MAX1513 can be used to generate a gamma-correction reference supply or another generalpurpose supply rail. The MAX1513's high-performance buffer amplifier can drive the LCD backplane (VCOM) or the gamma-correction divider string.

The MAX1513/MAX1514 are available in 4mm x 4mm 20-pin thin QFN packages with a maximum thickness of 0.8mm, suitable for ultra-thin LCD panel design.

Key Features   Applications/Uses
  • 2.7V to 5.5V Input Supply Range
  • Input-Supply Undervoltage Lockout
  • Current-Mode Step-Up Controller
    • Fast Transient Response to Pulsed Load
    • High Efficiency
    • Lossless Current Sensing
    • 430kHz/750kHz/1.5MHz Switching Frequency
  • Linear-Regulator Controllers for VGON, VGOFF
  • Linear-Regulator Controller for Logic Supply
  • High-Performance Buffer Amplifier (MAX1513 Only)
  • Additional Linear-Regulator Controller (MAX1513 Only)
  • Power-Up Sequence and VGON Delay Control
  • VMAIN, VGON, VGOFF, VGAMMA Shutdown Control
  • Timer-Delay Fault Latch for All Outputs
  • Thermal-Overload Protection

 
  • Automotive Displays
  • LCD Monitors and TVs
  • Notebook Computer Displays

    Key Specifications:   Multifunction PMICs
    Part Number Primary Topology Monitor/Control Features DC-DC/Power Features LCD/LED/Flash/CCD Features VIN (min) (V) VIN (max) (V) Min. VOUT (V) Max. VOUT (V) IOUT (A) IOUT (A) Operating Freq. (kHz) Package Smallest Available Package (max w/pins) (mm2) Price**
    MAX1513  Step-Down Output UVP
    Reset Output
    Shutdown
    Adj. Frequency
    Current Limit
    Fixed Freq./PWM
    Soft Start
    TFT Bias 2.7 5.5 2.7 50 0.5 0.5 1500 TQFN/20 17 $3.90 @ 1k
    MAX1514   
    See All Multifunction PMICs (79)
    Notes:
    **This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

    Evaluation Kits
  • MAX1513EVKIT

    Design Guides
  • Displays (PDF)

    Reliability Reports
  • Reliability Report: MAX1513.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: 1-6 of 6

    MAX1513 Free
    Sample
    Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1513ETP  
    TQFN;20 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0037 (PDF)
    Use pkgcode/variation: T2044-3*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1513ETP-T  
    TQFN;20 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0037 (PDF)
    Use pkgcode/variation: T2044-3*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1513ETP+  
    TQFN;20 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0037 (PDF)
    Use pkgcode/variation: T2044+3*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1513ETP+T  
    TQFN;20 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0037 (PDF)
    Use pkgcode/variation: T2044+3*
    -40°C to +85°C RoHS/Lead-Free: Lead Free
    Materials Analysis
    MAX1514 Free
    Sample
    Buy
    Package: TYPE PINS FOOTPRINT
      DRAWING CODE/VAR *
    Temp RoHS/Lead-Free?
    Materials Analysis
    MAX1514ETP  
    TQFN;20 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0037 (PDF)
    Use pkgcode/variation: T2044-3*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis
    MAX1514ETP-T  
    TQFN;20 pin;17 mm²
    Outline Drawing: 21-0139 (PDF)
    Land Pattern: 90-0037 (PDF)
    Use pkgcode/variation: T2044-3*
    -40°C to +85°C RoHS/Lead-Free: No
    Materials Analysis

    More Information
  • New Product Press Release 2003-10-30 

    Related Products
    MAX1889 Triple-Output TFT LCD Power Supply with Fault Protection
    MAX1997, MAX1998 Quintuple/Triple-Output TFT LCD Power Supplies with Fault Protection and VCOM Buffer
    MAX1530, MAX1531 Multiple-Output Power-Supply Controllers for LCD Monitors
    MAX1778, MAX1880, MAX1881, MAX1882, MAX1883, MAX1884, MAX1885 Quad-Output TFT LCD DC-DC Converters with Buffer

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    Document Ref.: 19-3047; Rev 0; 2004-01-27
    This page last modified: 2008-03-13


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