MAX1664

Active Matrix Liquid Crystal Display (AMLCD) Supply

Low-Noise, Integrated Solution Powers Active-Matrix TFT LCD Displays


Description

The MAX1664 integrates power-supply and backplane drive circuitry for active-matrix thin-film-transistor (TFT) liquid crystal displays. Included are a single-output, pulse-width-modulation boost converter (0.25Ω switch), a dual-output (positive and negative) gate-driver supply using one inductor, an LCD backplane driver, and a simple phase-locked loop to synchronize all three outputs.

High switching frequency (1MHz nominal) and phase-locked operation allow the use of small, minimum-height external components while maintaining low output noise. A +2.8V to +5.5V input voltage range allows operation with any logic supply. Output voltages are adjustable to +5.5V (DC-DC 1) and to +28V and-10V (DC-DC 2). The negative output voltage can be adjusted to -20V with additional components. Also included are a logic-level shutdown and a "Ready" output (RDY) that signals when all three outputs are in regulation.

The boost-converter operating frequency can be set at 16, 24, or 32 times the backplane clock. This flexibility allows a high DC-DC converter frequency to be used with LCD backplane clock rates ranging from 20kHz to 72kHz. The MAX1664 is supplied in a 1.1mm-high TSSOP package.
MAX1664: Typical Operating Circuit MAX1664: Typical Operating Circuit Enlarge+

Key Features

  • Integrates All Active Circuitry for Three DC-DC Converters
  • Ultra-Small External Components (ceramic capacitors, 2µH to 5µH inductors)
  • DC-DC Converters Phase-Locked to Backplane Frequency for Lowest Noise
  • Low Operating Voltage (down to +2.8V)
  • Adjustable Output Voltage from VIN to +5.5V
  • Load Currents Up to 500mA
  • Adjustable TFT Gate Driver Output:
    • Positive, VIN to +28V
    • Negative, 0 to -10V (-20V with added components)
  • Includes 0.35Ω Backplane Driver
  • 1µA Shutdown Current
  • Power-Ready Output Signal

Applications/Uses

  • LCD Modules
  • LCD Panels

Quality and Environmental Data

Product Reliability Reports: MAX1664.pdf 
Lead-Free Package Tin (Sn) Whisker Reports

Related Resources


MAX17525
High-Accuracy, Adjustable Power Limiter

  • Robust, High-Power Protection Reduces System Downtime
  • Enables Fast Startup and Brownout Recovery
  • Flexible Design Enables Reuse and Less Requalification

MAX77231
2.75V to 4.8V Input, 10mA Output, 35µVRMS Ultra Low Noise and Ripple Boost Regulator

  • Ultra-Small Solution Size (< 7mm2)
  • 35µVRMS (typ) Output Ripple/Noise
  • 11.2V/10mA Output

MAX17690
60V, No-Opto Isolated Flyback Controller

  • 4.5V to 60V Input Voltage Range
  • No Optocoupler or Third Winding Required to Derive Feedback Signal Across Isolation Boundary
  • 2A/4A Peak Source/Sink Gate Drive Currents

MAXREFDES116
MAXREFDES116#: Isolated 24V to 5V 40w Power Supply


MAX30031
Defibrillation/Surge/ESD Protector

  • Low Leakage Defibrillation Protection IC Helps ECG Systems
  • Low Capacitance ~ 3pF
  • Low Leakage ~ 20pA @ 70°C

MAX30034
Defibrillation/Surge/ESD Protector

  • Low Leakage Defibrillation Protection IC Helps ECG Systems
  • Low Capacitance ~ 3pF
  • Low Leakage ~ 20pA @ 70°C

MAX30032
Defibrillation/Surge/ESD Protector

  • Low Leakage Defibrillation Protection IC Helps ECG Systems
  • Low Capacitance ~ 3pF
  • Low Leakage ~ 20pA @ 70°C

MAX30033
Defibrillation/Surge/ESD Protector

  • Low Leakage Defibrillation Protection IC Helps ECG Systems
  • Low Capacitance ~ 3pF
  • Low Leakage ~ 20pA @ 70°C

MAX14738
High-Current Overvoltage Protectors with Adjustable OVLO

  • Protects High-Power Portable Devices
  • Flexible Overvoltage Protection Design
  • Additional Protection Features Increase System Reliability

MAX14739
High-Current Overvoltage Protectors with Adjustable OVLO

  • Protects High-Power Portable Devices
  • Flexible Overvoltage Protection Design
  • Additional Protection Features Increase System Reliability

MAX20305
Low On-Resistance, Bidirectional Overvoltage Protector with Current Sense

  • Protect Portable Devices
  • Flexible Overvoltage Protection
  • Additional Protection Features Increase System Reliability

MAX20306
Low On-Resistance, Bidirectional Overvoltage Protector with Current Sense

  • Protect Portable Devices
  • Flexible Overvoltage Protection
  • Additional Protection Features Increase System Reliability

MAXREFDES114
MAXREFDES114#: Isolated 24V to 5V 10W Power Supply


MAX14740
Compact 6A Smart Power Path Selector

  • Provides Robust Bidirectional Power Path
  • Flexible System Design with Battery Connect, Reset, and Disconnect
  • GPIO Control: MAX14741/MAX14742

MAX14741
Compact 6A Smart Power Path Selector

  • Provides Robust Bidirectional Power Path
  • Flexible System Design with Battery Connect, Reset, and Disconnect
  • GPIO Control: MAX14741/MAX14742

MAX14742
Compact 6A Smart Power Path Selector

  • Provides Robust Bidirectional Power Path
  • Flexible System Design with Battery Connect, Reset, and Disconnect
  • GPIO Control: MAX14741/MAX14742

MAX77650
Ultra-Low Power PMIC with 3-Output SIMO and Charger Optimized for Small Li+ Batteries

  • Highly Integrated
  • Low Power
  • Charger Optimized for Small Battery Size

MAX77651
Ultra-Low Power PMIC with 3-Output SIMO and Charger Optimized for Small Li+ Batteries

  • Highly Integrated
  • Low Power
  • Charger Optimized for Small Battery Size

MAX17606
Secondary-Side Synchronous MOSFET Driver for Flyback Converters

  • Wide 4.5V to 36V Input
  • 2A/4A Peak Source/Sink Gate Drive Currents
  • Suitable for Discontinuous Conduction Mode (DCM), Border Conduction Mode (BCM)

MAX15090B
2.7V to 18V, 12A, Hot-Swap Solution with Current Report Output

  • Integration Reduces Solution Size for Blade Servers and Other Space-Constrained Designs
  • Flexibility Enables Use in Many Unique Designs
  • Safety Features Ensure Accurate, Robust Protection

MAX15090C
2.7V to 18V, 12A, Hot-Swap Solution with Current Report Output

  • Integration Reduces Solution Size for Blade Servers and Other Space-Constrained Designs
  • Flexibility Enables Use in Many Unique Designs
  • Safety Features Ensure Accurate, Robust Protection

MAXREFDES115
MAXREFDES115#: Isolated 24V to 5V 20W Power Supply


MAXREFDES112
MAXREFDES112#: Isolated 24V to 12V 10W Flyback Power Supply


MAX14736
Precision, Ultra-Fast, Low Supply Current, Bidirectional Overvoltage Protector

  • Protects Battery-Connected Modules with Minimal Power Consumption
  • Allows Precise Design in OVLO Implementation
  • Increases System Reliability Through Premium Security

MAX14737
Precision, Ultra-Fast, Low Supply Current, Bidirectional Overvoltage Protector

  • Protects Battery-Connected Modules with Minimal Power Consumption
  • Allows Precise Design in OVLO Implementation
  • Increases System Reliability Through Premium Security

MAX17559
60V, Dual-Output, Synchronous Step-Down Controller

  • Wide Range of Operation
  • Enhances Power Efficiency
  • Operates Reliably in Adverse Industrial Environments

MAX17546
4.5V–42V, 5A, High-Efficiency, Synchronous Step-Down DC-DC Converter with Internal Compensation

  • Reduces External Components and Total Cost
  • Reduce Number of DC-DC Regulators to Stock
  • Reduces Power Dissipation