MC33680集成電路（IC）的穩(wěn)壓器-DC-DC開關穩(wěn)壓器規(guī)格書PDF中文資料

MC33680屬于集成電路（IC）的穩(wěn)壓器-DC-DC開關穩(wěn)壓器。由安森美半導體公司制造生產的MC33680穩(wěn)壓器 - DC-DC 開關穩(wěn)壓器DC-DC 開關穩(wěn)壓器 PMIC（電源管理集成電路）產品族中的產品是元器件級設備，用于需要穩(wěn)定 DC 輸入電壓和/或將其轉換為不同幅度的輸出電壓的應用。這些器件與稱為“控制器”PMIC 的類似產品的區(qū)別在于集成了主開關元件，設備提供的電力會通過該元件。

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)