TPS62221中文资料1.5V 输出、400mA、效率为 95% 的降压转换器，15uA，采用 ThinSOT-23 封装数据手册TI规格书

描述 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 µA; 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.

特性 Features

• High-Efficiency Synchronous Step-Down Converter With up to 95% Efficiency
• Adjustable Output Voltage Range From 0.7 V to VI
• Up to 400-mA Output Current
• Highest Efficiency Over Wide Load Current Range Due to Power-Save Mode
• Soft Start
• Dynamic Output-Voltage Positioning
• APPLICATIONS
• Cellular Phones, Smart Phones
• Digital Cameras
• Portable Equipment
• WLAN PC Cards

OMAP, TMS320 are trademarks of Texas Instruments.

简介

TPS62221属于集成电路（IC）的DCDC开关稳压器。由TI制造生产的TPS62221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。