TPS62208DBVR集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF中文资料

TPS62208DBVR属于集成电路（IC）的稳压器-DC-DC开关稳压器。由德州仪器制造生产的TPS62208DBVR稳压器 - DC-DC 开关稳压器DC-DC 开关稳压器 PMIC（电源管理集成电路）产品族中的产品是元器件级设备，用于需要稳定 DC 输入电压和/或将其转换为不同幅度的输出电压的应用。这些器件与称为“控制器”PMIC 的类似产品的区别在于集成了主开关元件，设备提供的电力会通过该元件。

1 Features

1• High-Efficiency Synchronous Step-Down

Converter With up to 95% Efficiency

• 2.5-V to 6-V Input Voltage Range

• Adjustable Output Voltage Range From 0.7 V to VI

• 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% Duty Cycle Low-Dropout Operation

• Dynamic Output-Voltage Positioning

• Available in a 5-Pin SOT23 Package

2 Applications

• PDAs and Pocket PCs

• Cellular Phones and Smart Phones

• Low Power DSP Supplies

• Digital Cameras

• Portable Media Players

• Portable Equipment

3 Description

The TPS6220x devices are a family of high-efficiency

synchronous step-down converters ideally suited for

portable systems powered by 1-cell Li-Ion or 3-cell

NiMH/NiCd batteries. The devices are also suitable to

operate from a standard 3.3-V or 5-V voltage rail.

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.