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MC33680 数据表 (PDF) - ON Semiconductor

MC33680 Datasheet PDF - ON Semiconductor
部件名 MC33680
下载  MC33680 下载

文件大小   340.64 Kbytes
  16 Pages
制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor
功能描述 Dual DC-DC Regulator for Electronic Organizer

MC33680 Datasheet (PDF)

Go To PDF Page 下载 数据表
MC33680 Datasheet PDF - ON Semiconductor

部件名 MC33680
下载  MC33680 Click to download

文件大小   340.64 Kbytes
  16 Pages
制造商  ONSEMI [ON Semiconductor]
网页  http://www.onsemi.com
标志 ONSEMI - ON Semiconductor
功能描述 Dual DC-DC Regulator for Electronic Organizer

MC33680 数据表 (HTML) - ON Semiconductor

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MC33680 产品详情

Dual DC−DC Regulator for Electronic Organizer

The MC33680 is a dual DC−DC regulator designed for electronic organizer applications. Both regulators apply Pulse−Frequency−Modulation (PFM). The main step−up regulator output can be externally adjusted from 2.7V to 5V. An internal synchronous rectifier is used to ensure high efficiency (achieve 87%). The auxiliary regulator with a built−in power transistor can be configured to produce a wide range of positive voltage (can be used for LCD contrast voltage). This voltage can be adjusted from +5V to +25V by an external potentiometer.

FEATURES:
• Low Input Voltage, 1V up
• Low Quiescent Current in Standby Mode: 35μA typical
• PFM and Synchronous Rectification to ensure high efficiency
    (87% @60mA Load)
• Adjustable Main Output: +2.7V to +5V
    nominal 3.3V @ 100mA max, with 1.8V input
• Auxiliary Output Voltage: +5V to +25V
    +5V @ 25mA max, with 1.8V input
    +25V @ 15mA max, with 1.8V input
• Current Limit Protection
• Power−Good Signal with Programmable Delay
• Battery Low Detection
• Lithium Battery or Supercap Back−up
• 32−Pin LQFP Package

APPLICATIONS:
• Digital Organizer and Dictionary
• Dual Output Power Supply (For MPU, Logic, Memory, LCD)
• Handheld Battery Powered Device (1−2 AA/AAA cell)




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