TPS61030RSAR开关稳压器 1Adj 原装德州TI

1特征3描述

TPS6103x设备提供1•96%高效同步升压变换器

适用于由单细胞Li- 1000-mA输出电流离子或锂聚合物，或由1.8-V输入的镍镉电池2 - 3细胞碱性电池供电的产品

或镍氢电池。转换器产生稳定

•设备静态电流:20-μA(Typ)输出电压是由外部调整

•输入电压范围:1.8-V至5.5-V电阻分压器或固定在芯片内部。它

提供高效率的功率转换和是•固定和可调的输出电压选项

在电源电压降至1.8 V时，输出电流可达1a至5.5 V。实现的

为了提高低升压变换器的效率，采用了固定频率脉冲输出的节电模式

功率宽度调制(PWM)控制器

•低电池比较器同步整流器获得最大的效率。

在低负载电流下，变换器进入省电•低EMI-Converter(集成抗振铃开关)模式，在宽负载下保持高效率

•关闭电流范围内的负载断开。电源保存模式可以

·超温保护失效，迫使变换器在固定状态下工作

开关频率。它还可以在4毫米x4毫米的QFN-16或a中进行同步操作

应用于TSSOP-16包同步引脚的外部时钟信号。升压过程中的最大峰值电流

switch的值限制为4500 mA。

TPS61030RSARTPS61030RSARTPS61030RSARTPS61030RSAR

1 Features 3 Description

The TPS6103x devices provide a power supply 1• 96% Efficient Synchronous Boost Converter With

solution for products powered by either a one-cell Li- 1000-mA Output Current Ion or Li-polymer, or a two to three-cell alkaline, NiCd From 1.8-V Input

or NiMH battery. The converter generates a stable

• Device Quiescent Current: 20-μA (Typ) output voltage that is either adjusted by an external

• Input Voltage Range: 1.8-V to 5.5-V resistor divider or fixed internally on the chip. It

provides high efficient power conversion and is • Fixed and Adjustable Output Voltage Options Up

capable of delivering output currents up to 1 A at 5 V to 5.5-V at a supply voltage down to 1.8 V. The implemented

• Power Save Mode for Improved Efficiency at Low boost converter is based on a fixed frequency, pulseOutput

Power width- modulation (PWM) controller using a

• Low Battery Comparator synchronous rectifier to obtain maximum efficiency.

At low load currents the converter enters Power Save • Low EMI-Converter (Integrated Antiringing Switch) mode to maintain a high efficiency over a wide load

• Load Disconnect During Shutdown current range. The Power Save mode can be

• Over-Temperature Protection disabled, forcing the converter to operate at a fixed

switching frequency. It can also operate synchronized • Available in a Small 4 mm x 4 mm QFN-16 or in a

to an external clock signal that is applied to the TSSOP-16 Package SYNC pin. The maximum peak current in the boost

switch is limited to a value of 4500 mA.