TPS62220DDC集成电路（IC）的稳压器-DC-DC开关稳压器规格书PDF中文资料

TPS62220DDC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TPS62220DDC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。

1FEATURES

2· 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 V I

· Fixed Output Voltage Options Available

· Up to 400-mA Output Current

· 1.25-MHz Fixed Frequency PWM Operation

· Highest Efficiency Over Wide Load Current

Range Due to Power-Save Mode

· 15 mA Typical Quiescent Current

· Soft Start

· 100% Duty Cycle Low-Dropout Operation

· Dynamic Output-Voltage Positioning

· Available in TSOT23 Package

APPLICATIONS

· PDAs and Pocket PC

· Cellular Phones, Smart Phones

· OMAP™ and Low Power DSP Supply

· Digital Cameras

· Portable Media Players

· Portable Equipment

· WLAN PC Cards

DESCRIPTION

The TPS6222x 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 400-mA output current, the devices are

ideal for powering the low voltage TMS320™ DSP

family and processors used in PDAs, pocket PCs,

and smart phones. Under nominal load current, the

devices operate with a fixed switching frequency of typically 1.25 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 mA; therefore, the device achieves the highest efficiency over the entire load current

range. The TPS6222x needs only three small

external components. Together with the tiny TSOT23

package, a minimum system solution size can be

achieved. An advanced fast response voltage mode

control scheme achieves superior line and load regulation with small ceramic input and output

capacitors.