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LP78086-00 PDF资料下载: 大小：335670k; 描述：The LP78086 are PMU, and contain a 650mA Buck DC/DC and dual channel 350mA Linear Regulator, Buck DC/DC is a constant frequency, current mode, PWM step-down converter. The device integrates a main switch and a synchronous rectifier for high efficiency. The 2.1V to 6.5V input voltage range makes the LP78086 is ideally suited for portable electronic devices that are powered from 1-cell Li-ion battery or from other power sources within the range such as cellular phones, PDAs and handy-terminals. Internal synchronous rectifier with low RDS(ON) dramatically reduces conduction loss at PWM mode. The internal synchronous switch increases efficiency while eliminate the need for an external Schottky diode.The switching ripple is easily smoothed-out by small package filtering elements due to a fixed operation frequency of 1.5MHz. This along with small TDFN-10 package provide small PCB area application. Other features include soft start, lower internal reference voltage with 2%

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