TPS62590DRVR开关稳压器 2.25MHz原装TI

1特征3描述

TPS62590设备是一个高效率的1•输出电流高达1000毫安

同步降压转换器，优化为

•输入电压范围从2.5 V到5.5 V的电池供电便携式应用程序。该设备

•在PWM模式下输出电压精度±2.5%提供1000 - ma输出电流从电池,

•典型15-μA静态电流,如单个锂离子或其他常见化学AA

和AAA电池。

•辍学率100%占空比

•可用在2毫米×2毫米×0.8毫米WSON的输入电压范围2.5 V至5.5 V

包装设备是针对动力大、种类多的便携设备而设计的

手持设备或POL应用程序。

•关于改进的特性集，请参阅TPS62290

TPS62590系列以2.25 mhz的固定频率运行

切换频率，进入省电模式

2应用操作在轻负载电流保持较高

在整个负载电流范围内的效率。

•手机，智能手机

节电模式为低输出进行了优化

•平板电脑电压波动。对于低噪音的应用，该设备

•WLAN可以强制固定频率脉冲宽度

•低功率DSP电源调制(PWM)模式通过拉模引脚

高。在关闭模式当前消费•荷载点(POL)应用程序μA减少到小于1。TPS62590允许

采用小型电感器和电容器来实现

小的解决方案。

TPS62590可用在2毫米×2毫米6-pin

WSON包。

TPS62590DRVRTPS62590DRVRTPS62590DRVRTPS62590DRVRTPS62590DRVR

1 Features 3 Description

The TPS62590 device is a high-efficiency 1• Output Current up to 1000 mA

synchronous step down converter, optimized for

• Input Voltage Range from 2.5 V to 5.5 V battery powered portable applications. The device

• Output Voltage Accuracy in PWM Mode ±2.5% provides up to 1000-mA output current from batteries,

• Typical 15-μA Quiescent Current such as single Li-Ion or other common chemistry AA

and AAA cells.

• 100% Duty Cycle for Lowest Dropout

• Available in a 2 mm × 2 mm × 0.8 mm WSON With an input voltage range of 2.5 V to 5.5 V, the

Package device is targeted to power a large variety of portable

handheld equipment or POL applications.

• For Improved Features Set, See the TPS62290

device (SLVS764) The TPS62590 family operates at 2.25-MHz fixed

switching frequency and enters a power save mode

2 Applications operation at light load currents to maintain a high

efficiency over the entire load current range.

• Mobile Phones, Smart Phones

The power save mode is optimized for low output

• Tablet PCs voltage ripple. For low noise applications, the device

• WLAN can be forced into fixed frequency pulse width

• Low Power DSP Supply modulation (PWM) mode by pulling the MODE pin

high. In the shutdown mode the current consumption • Point-of-Load (POL) Applications is reduced to less than 1 μA. The TPS62590 allows

the use of small inductors and capacitors to achieve a

small solution size.

The TPS62590 is available in a 2-mm × 2-mm 6-pin

WSON package.