描述 Description

The FP6717 is a high efficiency, fixed frequency 550KHz, current mode PWM boost DC/DC converter which could operate battery such as input voltage down to 2.5V. The converter output voltage can be adjusted to a maximum of 5.25V by an external resistor divider. Besides the converter includes a 39m? N-channel MOSFET switch and 42m?P-channel synchronous rectifier. So no external Schottky diode is required and could get better efficiency near 90%.\r
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The converter is based on a fixed frequency, current mode, pulse-width-modulation PWM controller that goes automatically into PSM mode at light load. When converter operation into discontinuous mode, the internal anti-ringing switch will reduce interference and radiated electromagnetic energy.\r
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The FP6717 is available in a space-saving SOP-8 (Exposed Pad) package for portable application.

特性 Features

? High Efficiency up to 90%\r
? Low RDS(ON) Integrated Power MOSFET\r
? NMOS 39m?/PMOS 42m?\r
? Wide Input Voltage Range: 2.5V to 5.25V\r
? Fixed 550KHz Switching Frequency\r
? Low-Power Mode for Light Load Conditions\r
? ±2.0% Voltage Reference Accuracy\r
? Adjustable Current Limit\r
? PMOS Current Limit for Short Circuit Protection\r
? Low Quiescent Current\r
? Input Under Voltage Lockout\r
? Internal Compensation Function\r
? Built-In Soft Start Function\r
? Over-Temperature Protection with Auto Recovery\r
? Output Overvoltage Protection\r
? SOP-8 (Exposed Pad) Pb-Free Package

應(yīng)用 Application

? Portable Power Bank\r
? Wireless Equipment\r
? Handheld Instrument\r
? GPS Receiver \r