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LP2950芯片解密技术实例分析

来源:芯片解密-龙芯世纪   时间:2011-04-12   阅读:963

 龙芯世纪芯片解密事业部依靠多年来在IC解密、MCU单片机解密、DSP芯片解密、CPLD芯片解密、FPGA芯片解密等技术研究中的经验积累和项目研究成果,致力于为客户需解密的每一颗芯片提供最具可靠性和经济效益的解密服务。

   目前,行业内针对LP2950芯片解密的技术并不普遍和成熟,而龙芯科技针对该系列疑难型IC解密的研究已经率先取得突破,已经成功开发出高效可靠的优质解密方案。
   下面我们就针对LP2950芯片的主要性能特征进行简单介绍,供广大客户及其他各类技术工程师参考借鉴。

LP2950 Features
5V, 3V, and 3.3V versions available
High accuracy output voltage
Guaranteed 100mA output current
Extremely low quiescent current
Low dropout voltage
Extremely tight load and line regulation
Very low temperature coefficient
Use as Regulator or Reference
Needs minimum capacitance for stability
Current and Thermal Limiting
Stable with low-ESR output capacitors (10m  to 6 )
The LP2950 and LP2951 are micropower voltage regulators with very low quiescent current (75霢 typ.) and very low dropout voltage (typ. 40mV at light loads and 380mV at 100mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the LP2950/LP2951 increases only slightly in dropout, prolonging battery life.
The LP2950-5.0 is available in the surface-mount D-Pak package, and in the popular 3-pin TO-92 package for pin-compatibility with older 5V regulators.

One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5V, 3V, or 3.3V output (depending on the version), or programmed from 1.24V to 29V with an external pair of resistors.
Careful design of the LP2950 has minimized all contributions to the error budget. This includes a tight initial tolerance (.5% typ.), extremely good load and line regulation (.05% typ.) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.

   基于LP2950单片机的以上特点,龙芯世纪芯片解密中心能在短时间内为您完成LP2950单片机解密服务。如果您有LP2950芯片解密需求,欢迎来电来访咨询洽谈。

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