MAX8758 Datasheet | Maxim Integrated

Description Features - 1.8V to 5.5V Input Voltage Range - Input Undervoltage Lockout - 0.5m A Quiescent Current - 640k Hz/1.2MHz Current-Mode Step-Up Regulator Fast Transient Response High-Accuracy Output Voltage (1.5%) Built-In 14V, 2.5A, 115mΩ MOSFET High Efficiency Programmable Soft-Start Current Limit with Lossless Sensing Timer-Delay Fault Latch - High-Speed Operational Amplifier ±150m A Output Current 7.5V/µs Slew Rate 12MHz, -3d B Bandwidth Rail-to-Rail Inputs/Outputs - Dual Mode™, Logic-Controlled, High-Voltage Switch with Programmable Delay - Thermal-Overload Protection - 24-Pin, 4mm x 4mm, Thin QFN Package The MAX8758 includes a high-performance step-up regulator, a high-speed operational amplifier, and a logiccontrolled, high-voltage switch-control block with programmable delay. The device is optimized for thin-film transistor (TFT) liquid-crystal display (LCD) applications. The step-up DC-DC regulator provides the regulated supply voltage for the panel source driver ICs. The converter is a high-frequency (640k Hz/1.2MHz), current-mode regulator with an integrated 14V n-channel power MOSFET. The high-switching frequency allows the use of ultra-small inductors and ceramic capacitors. The current-mode control architecture provides fast transient response to pulsed loads. The regulator achieves efficiencies over 85% by bootstrapping the supply rail of the internal gate driver from the step-up regulator output. The step-up regulator features undervoltage lockout (UVLO), soft-start, and internal current limit. The high-current operational amplifier is designed to drive the LCD backplane (V). The amplifier features high output current (±150m A), fast slew rate (7.5V/µs), wide bandwidth (12MHz), and rail-to-rail inputs and outputs. The MAX8758 is available in a 24-pin, 4mm x 4mm, thin .. QFN package with a maximum thickness of 0.8mm for ultra-thin LCD panels. The device operates over the -40°C to +85°C temperature range. Simplified Operating...