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天鈺科技股份有限公司

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 首頁 產品應用 LCD-TV LV Buck DC/DC Converter

FP6366

Description

The FP6366 is a high efficiency, low-noise, DC-DC step-down pulse width modulated (PWM) converter that goes automatically into PFM mode at light load to improve efficiency. It is ideally suitable for systems powered from a 1-cell Li-ion battery or from a 2- to 3-cell NiCd, NiMH or alkaline battery. The 100% duty cycle feature provides low dropout operation, extending battery life in portable systems. Switch frequency is internally set at 1.5MHz, allowing use of small surface mount inductors and capacitors. The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Shutdown mode places the device in standby, reducing quiescent supply current to less than 1μA. The FP6366 is available in a small SOT-23-5 package.

 
Features

檔案下載

● Synchronous Rectification: Approach 95% Efficiency
● 2.5V to 5.5V Input Voltage Range
● The PFM Mode Operation for Improving Efficiency at Light Load
● Real Shutdown Isolated Load from Battery
● Internal Compensation without External Capacitors and Resistors
● No Schottky Diode Required
● Low Dropout Operation: 100% Duty Cycle
● Fixed Frequency Operation at 1.5MHz
● Low Quiescent Current at 35μA
● Low Shutdown Current at 1μA
● RoHS Compliant
 
Applications
● Cellular Phone
● Handheld Instrument
● Wireless LAN
● MP3 Portable Audio Player
● Battery Operated Device
 

Pin Assignments

Ordering Information

 

 

Typical Application Circuit

 
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