TPS61070DDCR开关稳压器 Adj原装德州TI

1特征3描述

TPS6107x装置提供1•90%效率的同步升压转换器

产品的解决方案由一个电池供电，

- 75毫安输出电流在3.3 V从0.9-V二电池，或三电池碱性，镍镉或镍氢，或一个输入

电池锂离子或锂聚合物电池。输出电流可以

-使用单片机时，1.8-V的150毫安输出电流高达75毫安

输入碱性，放电至0.9 V。它还可以

用于生成5 V 3.3 200 mA - V•设备静态电流:19μA(Typ)铁路或一个锂离子电池。升压转换器是基于

•输入电压范围:在固定频率上0.9 V - 5.5 V，脉宽调制(PWM)

•可调输出电压5.5 V控制器使用同步整流器获得

•省电模式版本，最高效率。在低负载电流

TPS61070和TPS61073进入低功率节能，提高效率

在宽负载下保持高效率的模式

•关闭电流范围内的负载断开。电源保存模式被禁用

•过热保护TPS61071和TPS61072，迫使转换器

•小型6针薄SOT23封装，以固定开关频率运行。的

升压开关的最大峰值电流通常是

以600毫安为限。
TPS61070DDCRTPS61070DDCRTPS61070DDCRTPS61070DDCR

1 Features 3 Description

The TPS6107x devices provide a power supply 1• 90% Efficient Synchronous Boost Converter

solution for products powered by either a one-cell,

– 75-mA Output Current at 3.3 V From 0.9-V two-cell, or three-cell alkaline, NiCd or NiMH, or oneInput

cell Li-ion or Li-polymer battery. Output currents can

– 150-mA Output Current at 3.3 V From 1.8-V go as high as 75 mA while using a single-cell

Input alkaline, and discharge it down to 0.9 V. It can also

be used for generating 5 V at 200 mA from a 3.3-V • Device Quiescent Current: 19 μA (Typ) rail or a Li-ion battery. The boost converter is based

• Input Voltage Range: 0.9 V to 5.5 V on a fixed frequency, pulse-width-modulation (PWM)

• Adjustable Output Voltage Up to 5.5 V controller using a synchronous rectifier to obtain

• Power-Save Mode Version Available for maximum efficiency. At low load currents the

TPS61070 and TPS61073 enter the power-save Improved Efficiency at Low Output Power

mode to maintain a high efficiency over a wide load

• Load Disconnect During Shutdown current range. The power-save mode is disabled in

• Overtemperature Protection the TPS61071 and TPS61072, forcing the converters

• Small 6-Pin Thin SOT23 Package to operate at a fixed switching frequency. The

maximum peak current in the boost switch is typically

limited to a value of 600 mA.