DatasheetsPDF.com

MC33680

Part Number	MC33680
Manufacturer	ON Semiconductor
Description	Dual DC-DC Regulator
Published	Apr 21, 2007
Detailed Description	MC33680 Dual DC−DC Regulator for Electronic Organizer The MC33680 is a dual DC−DC regulator designed for electronic orga...
Datasheet	MC33680 PDF File

Overview

MC33680 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.
The MC33680 has been designed for battery powered hand−held products.
With the low start−up voltage from 1V and the low quiescent current (typical 35 μA); the MC33680 is best suited to operate from 1 to 2 AA/ AAA cell.
Moreover, supervisory functions such as low battery detection, CPU Power−Good signal, and back−up battery control, for lithium battery or supercap are also included in the chip.
FEATURES: http://onsemi.
com 32 1 32−LEAD LQFP FTB SUFFIX CASE 873A PIN CONNECTIONS & DEVICE MARKING NC VAUXBASE VAUXCHG VAUXBDV VAUXFBN NC VAUXFBP VAUXEN VAUXSW VAUXEMR LIBATIN LIBATOUT NC VMAINGND VMAINSW VMAIN MC33680 FTB AWLYYWW NC DGND LIBATCL LIBATON LOWBATB PORB DGND LOWBATSEN • 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 • • • • • • www.
DataSheet4U.
com 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) ORDERING INFORMATION Device MC33680FTB...

Similar Datasheet

MC3360P 1/4 Watt Audio Amplifier - Motorola
MC3361 LOW POWER NARROW BAND FM IF - SUM
MC3361 Low Power Narrow Band FM IF - MC Devices
MC3361 Low Power Narrow Band FM IF - Samsung Electronics
MC3361 Low Power Narrowband FM IF - NXP
MC3361B LOW POWER NARROWBAND FM IF - Motorola
MC3361BP LOW VOLTAGE/POWER NARROW BAND FM IF - UTC
MC3361C LOW POWER NARROWBAND FM IF - Motorola
MC3362 LOW-POWER DUAL CONVERSION FM RECEIVER - Motorola
MC3363 LOW POWER DUAL CONVERSION FM RECEIVER - Motorola

@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)