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LX1882-00CDU Datasheet(PDF) 1 Page - Microsemi Corporation |
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LX1882-00CDU Datasheet(HTML) 1 Page - Microsemi Corporation |
1 / 13 page Microsemi Integrated Products Division 11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570 Page 1 Copyright © 2000 Rev. 1.0e, 2005-03-03 LX1882 Charge Pump Doubler with Linear Regulator PRODUCTION DATA SHEET I N T E GRA T ED PR ODUC T S DESCRI PTI O N The LX1882 is a two-stage boost regulator featuring a charge pump doubler with an integrated low dropout linear regulator. The first stage features an internal doubler charge pump converting an input supply of 1.8V to 4.4V, while the second stage is an LDO regulating the boosted voltage converting it to a regulated output. The LX1882 is capable of supplying up to 50mA of output current with an operating current of less than 150µA. Quiescent current is reduced to < 5µA in shutdown mode. The LX1882’s internal regulator is stable with either Tantalum or Ceramic low-value capacitors, typically 2.2µF on the output, allowing designers flexibility in external component selection. Reliability and safety features include Thermal Shutdown Protection and Integrated Short-Circuit Protection. IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com KEY FEATUR ES Wide Input Voltage: 1.8V to 4.4V 3.3V and Adjustable (2.5V to 5.5V) Output Voltage Options Inductor-less design using small ceramic capacitors Low Shutdown Current of 1 µA Internal Thermal Shutdown and Current Limiting 550kHz Switching Operation APPLICATIONS/BENEFITS Cellular Telephone VCO Supplies Medical Instrumentation Data Acquisition Wireless PCMCIA Applications EMI Sensitive Boost Applications PRODUCT H I GHLIGHT 7 8 4 1 LED N+1 2 3 6 V IN 1.8V to 4.4V V OUT OFF ON V OUT SHDN FB GND C+ V IN C- CPO LX1882-00 5 C1 C2 C3 C4 LX1882: Adjustable Output; LED Driver 7 8 2 1 3 6 V IN 2V to 4.4V V OUT = 3.3V OFF ON V OUT SHDN FILT GND C+ V IN C- CPO LX1882-33 4 5 C2 C3 C1 C FILT LX1882: Fixed 3.3V Output C4 PACKAGE ORDER INFO DM Plastic SOIC 8-PIN DU Plastic MSOP 8-PIN TJ ( °C) INPUT OUTPUT RoHS Compliant / Pb-free Transition DC: 0440 RoHS Compliant / Pb-free Transition DC: 0432 1.8V – 4.4V Adj LX1882-00CDM LX1882-00CDU 0 to 70 2V – 4.4V 3.3V LX1882-33CDM LX1882-33CDU Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1882-00CDU-TR) |
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