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ML4851 데이터시트 (PDF) - Micro Linear Corporation

ML4851 Datasheet PDF - Micro Linear Corporation
부품명 ML4851
다운로드  ML4851 다운로드

파일 크기   286.96 Kbytes
페이지   9 Pages
제조업체  MICRO-LINEAR [Micro Linear Corporation]
홈페이지  http://www.microlinear.com
Logo MICRO-LINEAR - Micro Linear Corporation
상세설명 Low Current, Voltage Boost Regulator

ML4851 Datasheet (PDF)

Go To PDF Page 다운로드 데이터시트
ML4851 Datasheet PDF - Micro Linear Corporation

부품명 ML4851
다운로드  ML4851 Click to download

파일 크기   286.96 Kbytes
페이지   9 Pages
제조업체  MICRO-LINEAR [Micro Linear Corporation]
홈페이지  http://www.microlinear.com
Logo MICRO-LINEAR - Micro Linear Corporation
상세설명 Low Current, Voltage Boost Regulator

ML4851 데이터시트 (HTML) - Micro Linear Corporation

ML4851 Datasheet HTML 1Page - Micro Linear Corporation ML4851 Datasheet HTML 2Page - Micro Linear Corporation ML4851 Datasheet HTML 3Page - Micro Linear Corporation ML4851 Datasheet HTML 4Page - Micro Linear Corporation ML4851 Datasheet HTML 5Page - Micro Linear Corporation ML4851 Datasheet HTML 6Page - Micro Linear Corporation ML4851 Datasheet HTML 7Page - Micro Linear Corporation ML4851 Datasheet HTML 8Page - Micro Linear Corporation ML4851 Datasheet HTML 9Page - Micro Linear Corporation

ML4851 제품 세부 정보

GENERAL DESCRIPTION
The ML4851 is a low power boost regulator designed for DC to DC conversion in 1 to 3 cell battery powered systems. The maximum switching frequency can exceed 100kHz, allowing the use of small, low cost inductors.
The combination of BiCMOS process technology, internal synchronous rectification, variable frequency operation, and low supply current make the ML4851 ideal for 1 cell applications. The ML4851 is capable of start-up with input voltages as low as 1V and is available in 5V and 3.3V output versions with output voltage accuracy of ±3%.
An integrated synchronous rectifier eliminates the need for an external Schottky diode and provides a lower forward voltage drop, resulting in higher conversion efficiency. In addition, low quiescent battery current and variable frequency operation result in high efficiency even at light loads. The ML4851 requires only one inductor and two capacitors to build a very small regulator circuit capable of achieving conversion efficiencies in excess of 90%.
The circuit also contains a RESET output which goes low when the IC can no longer function due to low input voltage, or when the DETECT input drops below 200mV.

FEATURES
■ Guaranteed full load start-up and operation at 1V input
■ Maximum switching frequency > 100kHz
■ Pulse Frequency Modulation (PFM) and internal
   synchronous rectification for high efficiency
■ Minimum external components
■ Low ON resistance internal switching FETs
■ Micropower operation
■ 5V and 3.3V output versions




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