MAX8784

19-0737; Rev 0; 1/07 EVAALVUAAILTAIOBNLEKIT Step-Up Regulator, Internal Charge Pumps, Switch Control, and Operational Amplifier for TFT LCDs MAX8784 General Description The MAX8784 generates supply rails for the thin-film transistor (TFT) liquid-crystal display (LCD) panels in TVs and monitors. It includes a step-up regulator, a regulated positive and a negative charge-pump, three high-current operational amplifiers, and Dual Mode™, logic-controlled, high-voltage switch control block. HVS mode automatically increases the output voltages of the boost regulator and the positive charge-pump to stress test display panels during production. The MAX8784 can operate from input voltages of 4V to 5.5V and is optimized for LCD TV panel and LCD monitor applications. The step-up DC-DC regulator provides a regulated supply voltage for TFT source drivers. The step-up regulator is a high-frequency (1.2MHz), high-efficiency, currentmode regulator. The step-up regulator has a built-in 110mΩ (typ)...