MAX8727
19-3480; Rev 1; 8/05 EVAALVUAAILTAIOBNLEKIT
TFT-LCD Step-Up DC-DC Converter
General Description
The MAX8727 is a high-performance step-up DC-DC converter that provides a regulated supply voltage for active-matrix thin-film
transistor (TFT) liquid-crystal displays (LCDs).
The MAX8727 incorporates currentmode, fixed-frequency, pulse-width modulation (PWM) circuitry with a built-in n-channel power MOSFET to achieve high efficiency and fast transient response.
Users can select 640kHz or 1.
2MHz operation using a logic input pin (FREQ).
The high switching frequencies allow the use of ultra-small inductors and low-ESR ceramic capacitors.
The current-mode architecture provides fast transi...