[LaunchPad] MSP430G2开发板 ，LaunchPad实验板 元件 学习 TPS77301DGK品牌TI封装MSOP8

MSP430G2开发板 ，LaunchPad实验板 元件 学习

TPS77301DGK品牌TI封装MSOP8

大概：

TPS77301DGK升降压稳压管复位IC供应

小结 1.5-- 5.5v 常用的电源电压监督员（中职），或重置输出电压。

可能相关 ：

当前级接上高阻抗的后级它主要提供适切的输出电压

依据：

http://wenku.baidu.com/view/9e6b967831b765ce0508147e.html

Because the PMOS device behaves as a low-value resistor, the dropout voltage is very low (typically 200 mVat an output current of 250 mA for 3.3-volt option) and is directly proportional to the output current. Additionally,since the PMOS pass element is a voltage-driven device, the quiescent current is very low and independentof output loading (typically 92 μA over the full range of output current, 0 mA to 250 mA). These two keyspecifications yield a significant improvement in operating life for battery-powered systems.The device is enabled when the EN pin is connected to a low-level input voltage. This LDO family also featuresa sleep mode; applying a TTL high signal to EN (enable) shuts down the regulator, reducing the quiescentcurrent to less than 1 μA at TJ = 25°C.The TPS773xx features an integrated power-on reset, commonly used as a supply voltage supervisor (SVS),or reset output voltage. The RESET output of the TPS773xx initiates a reset in DSP, microcomputer ormicroprocessor systems at power up and in the event of an undervoltage condition. An internal comparator inthe TPS773xx monitors the output voltage of the regulator to detect an undervoltage condition on the regulatedoutput voltage. When OUT reaches 95% of its regulated voltage, RESET will go to a high-impedance state aftera 220-ms delay. RESET will go to low-impedance state when OUT is pulled below 95% (i.e. over load condition)of its regulated voltage.For the TPS774xx, the power good terminal (PG) is an active high output, which can be used to implement apower-on reset or a low-battery indicator. An internal comparator in the TPS774xx monitors the output voltageof the regulator to detect an undervoltage condition on the regulated output voltage. When OUT falls below 82%of its regulated voltage, PG will go to a low-impedance state. PG will go to a high-impedance state when OUTis above 82% of its regulated voltag

小结 1.5-- 5.5v 常用的电源电压监督员（中职），或重置输出电压。

具体内容  ：

低值电阻，电压差是非常低

（通常是200 mvat输出电流为250毫安3.3伏的选项）

是成正比的输出电流。

此外，由于管通过元素是一个驱动装置，静态电流是非常低的，

电池供电系统

包含睡眠模式；应用逻辑高信号恩（使）关闭调节器，减少quiescentcurrent小于1μ在天津= 25°C  

常用的电源电压监督员（中职），或重置输出电压。

当达到95%的调节电压，复位到高阻抗状态后，220-ms延迟。

当低于82%的调节电压，皮克将到低阻抗状态。皮克将为高阻状态时，