ADP3041 Datasheet | Analog Devices

TFT LCD Panel Power Module ADP3041 Features 600 k Hz PWM Frequency Fully Integrated 1.5 A Power Switch 3% Output Regulation Accuracy Simple pensation Small Inductor and MLC Capacitors 300 ␮A Quiescent Supply Current 90% Efficiency Undervoltage Lockout 5 Buffers TSSOP 20-Lead Package Pb-Free Part APPLICATIONS TFT LCD Bias Supplies GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM P ERROR AMP gm IN BIAS REF FB F/F R Q RAMP GEN PARATOR NC OSC S DRIVER SD SS SOFT START CURRENT SENSE AMPLIFIER PGND AVCC VCMI VCMO The ADP3041 is a fixed frequency, PWM step-up dc-to-dc switching regulator with five buffers capable of 12 V boosted output voltage in a TSSOP 20-lead package. It provides high efficiency, low noise operation, and excellent dynamic response, and is easy to use. The high switching frequency allows for small, cost-saving, external inductive and capacitive ponents. The ADP3041 operates in PWM current mode. The current limit and the power switch are integrated pletely on-chip. Capable of operating from 2.5 V to 5.5 V input, the ADP3041 is ideal for thin-film transistor (TFT) liquid crystal display (LCD) module applications, where local point-of-use power regulation is required. Supporting output voltages down to 4.5 V, the ADP3041 is ideal to generate today’s low voltage rails, providing the optimal solution in its class for delivering power efficiently, responsively, and simply with minimal printed circuit board area. The ADP3041 integrates five buffers. Each buffer can deliver 35 m A output current and has rail-to-rail input and output capability. G1I G1O G2I G2O G3I G3O G4I G4O AGND REV. D Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog...