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L432M3B芯片反向开发与破解信息

时间:2012-06-13 08:57:48

世纪芯较早就已经顺利取得技术突破,成功破解多款典型IC芯片,而由于解密难度大、周期长,使得解密成本及费用相对较高。为此,世纪芯又专门组织技术力量进行该系列芯片低成本解密方案研究,使针对L432M3B芯片解密的技术更为成熟,解密成本更低,为客户实现更大经济效益。这里,我们仅以L432M3B芯片为例,针对其性能特征做简单介绍:
The L432 is a three-terminal adjustable shunt regulator utilizing an accurate 1.24V band gap reference. The output voltage can be set to any
value between 1.24V (VREF) to 18V with two external resistors as shown in the typical application circuit. The device exhibit a wide operating current range of 0.2 to 100 mA with a typical dynamic impedance of 0.25Ω. Active output circuitry provides a very sharp turn-on haracteristic, making the L432 excellent replacements for low-voltage zener diodes in many applications, including on-board regulation and adjustable power supplies. When used with an opto-coupler, the L432 is ideal voltage reference  in isolated feedback circuits for 3.3V switching-mode power supplies.The L432 shunt regulator is available in two voltage tolerances (0.5% & 1.0%) and three package options (TO-92, SOT-23-3 and SO-8).
FEATURES
·Internal amplifier with 100 mA capability
·Programmable output voltage to 18V
·0.25Ω typical output impedance
·Pin to pin compatible with TLV431A,TS431, SC431L & AS432
·Trimmed bandgap design 0.5% & 1.0% with three package options
·Low output noise
APPLICATIONS
·Linear regulator controller
·Precision voltage reference
·Switching power supplies
·Battery operating equipment
·Instrumentation
·PCs, Computer disk drives
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