General Description

The MAX17014 multiple-output power-supply controller generates all the supply rails for thin-film transistor (TFT) liquid-crystal display (LCD) panels in TVs and monitors operating from a regulated 12V input. It includes a step-down and a step-up regulator, a positive and a negative charge pump, two operational amplifiers, and a Dual Mode™ logic-controlled high voltage switch control block. The MAX17014 can operate from 8V to 16.5V input voltages and is optimized for LCD TV panel and LCD monitor applications running directly from 12V supplies.

Features

♦ Optimized for 10.8V to 13.2V Input Supply

♦ 8V to 16.5V Input Supply Range

♦ Selectable Frequency (600kHz/1.2MHz)

♦ Current-Mode Step-Up Regulator

   Built-In 20V, 3.3A, 110mΩ n-Channel MOSFET

   High-Accuracy Output Voltage (1)

   True Shutdown

   Fast Load-Transient Response

   High Efficiency

   3ms Internal Soft-Start

♦ Current-Mode Step-Down Regulator

   Built-In 20V, 2.5A, 120mΩ n-Channel MOSFET

   Fast Load-Transient Response

   Adjustable Output Voltage Down to 1.25V

   Skip Mode at Light Load

   High Efficiency

   3ms Internal Soft-Start

♦ Adjustable Positive and Negative Charge-Pump Regulators

♦ Soft-Start and Timer-Delay Fault Latch for All Outputs

♦ Logic-Controlled High-Voltage Integrated Switches with Adjustable Delay

♦ Two High-Speed Operational Amplifiers

   ±150mA Short-Circuit Current

   100V/µs Slew Rate

   20MHz, -3dB Bandwidth

♦ 120mΩ p-Channel FET for AVDD Sequencing

♦ Input Undervoltage Lockout and Thermal Overload Protection

♦ 48-Pin, 7mm x 7mm Thin QFN Package

Applications

LCD TV Panels

LCD Monitor Panels