ТПС62203ДБВР

Функции

●High-Efficiency Synchronous Step-Down Converter With up to 95 percent Efficiency

●2.5-V to 6-V Input Voltage Range
●Adjustable Output Voltage Range From 0.7 V to V

●Fixed Output Voltage Options Available

●Up to 300-mA Output Current

●1-MHz Fixed-Frequency PWM Operation

●Highest Efficiency Over Wide Load Current Range Due to Power Save Mode

●15-µA Typical Quiescent Current

●Soft Start

●100 percent Duty Cycle Low-Dropout Operation

●Dynamic Output-Voltage Positioning

●Available in a 5-Pin SOT23 Package

Приложения

●PDAs and Pocket PCs

●Cellular Phones and Smart Phones

●Low Power DSP Supplies

●Digital Cameras

●Portable Media Players

●Portable Equipment

Описание

Устройства TPS6220x представляют собой семейство высокоэффективных -синхронных шаговых-преобразователей частоты, идеально подходящих для портативных систем с питанием от 1--литий-ионных или 3-элементных NiMH/NiCd аккумуляторов. Устройства также подходят для работы от стандартной шины напряжения 3,3 В или 5 В.

With an output voltage range of 6 V down to 0.7 V and up to 300 mA output current, the devices are ideal to power low voltage DSPs and processors used in PDAs, pocket PCs, and smart phones. Under nominal load current, the devices operate with a fixed switching frequency of typically 1 MHz. At light load currents, the part enters the power save mode operation; the switching frequency is reduced and the quiescent current is typically only 15 µA; therefore, it achieves the highest efficiency over the entire load current range. The TPS6220x needs only three small external components. Together with the SOT23 package, a minimum system solution size is achieved. An advanced fast response voltage mode control scheme achieves superior line and load regulation with small ceramic input and output capacitors.