Document
Global Mixed-mode Technology Inc.
G5110
600k/1.2MHz TFT-LCD Step-Up DC-DC Converter
Features
90% Efficiency Adjustable Output from VIN to 22V 4A, 0.125Ω, 22V Power MOSFET 2.5V to 5.5V Input Range 600kHz/1.2MHz Switching Frequency TDFN3X3-10 Package
Applications
LCD Displays Portable Applications Hand-Held Devices
General Description
The G5110 boost converter incorporate high-performance, current-mode, and frequency selectable pulse width modulation (PWM) circuitry with a built-in N-channel MOSFET to provide a highly efficient regulator.
The G5110’s frequency can be selected by user to operate at either 600kHz or 1.2MHz. High switching frequency allows easily filtering and faster loop performance. An external compensation pin provides the user flexibility in determining loop dynamics, allowing the use of small, low ESR ceramic output capacitors. The current-mode architecture provides fast transient response to pulsed loads.
The internal N-channel MOSFET.