Electronic Components Datasheet Search |
|
LM2623MMX Datasheet(PDF) 1 Page - Texas Instruments |
|
LM2623MMX Datasheet(HTML) 1 Page - Texas Instruments |
1 / 16 page SW 4.7pF C3 4.7PH L1 FREQ 7 2 6 4 8 3 1 PGND SGND BOOT EN FB D1 3A 5V RF2 100k C1 22PF V IN 2 Cells R3 150k RF1 300k + V DD LM2623 C2 100PF tan t 5 LM2623 www.ti.com SNVS188G – MAY 2004 – REVISED DECEMBER 2005 LM2623 General Purpose, Gated Oscillator Based, DC/DC Boost Converter Check for Samples: LM2623 1 FEATURES DESCRIPTION The LM2623 is a high efficiency, general purpose, 2 • Good Efficiency Over a Very Wide Load Range step-up DC-DC switching regulator for battery- • Very Low Output Voltage Ripple powered and low input voltage systems. It accepts an • Small, VSSOP-8 Package (Half the Footprint of input voltage between .8 and 14 volts and converts it Standard 8 pin SOIC Package) into a regulated output voltage between 1.24 and 14 volts. Efficiencies up to 90% are achievable with the • 1.09 mm Package Height LM2623. • Up to 2 MHz Switching Frequency In order to adapt to a number of applications, the • .8V to 14V Operating Voltage LM2623 allows the designer to vary the output • 1.1V Start-up Voltage voltage, the operating frequency (300kHz to 2 MHz) • 1.24V - 14V Adjustable Output Voltage and duty cycle (17% to 90%) to optimize the part's performance. The selected values can be fixed or can • Up to 2A Load Current at Low Output Voltages vary with battery voltage or input to output voltage • 0.17 Ω Internal MOSFET ratio. The LM2623 uses a very simple, on/off • Up to 90% Regulator Efficiency regulation mode to produce good efficiency and stable operation over a wide operating range. It • 80 µA Typical Operating Current (into VDD Pin normally regulates by skipping switching cycles when of Supply) it reaches the regulation limit (Pulse Frequency • <2.5µA Specified Supply Current In Shutdown Modulation). • 4mm x 4mm Thermally Enhanced WSON Note: Please read the Non-Linear Effect and Package Option Choosing The Correct C3 Capacitor sub-sections of the Design Procedure section of this data sheet, so APPLICATIONS that any challenges with designing with this part can be taken into account before a board design/layout is • Cameras, Pagers and Cell Phones finalized. • PDAs, Palmtop Computers, GPS Devices For Alternative Solutions, See Also: LM2700, • White LED Drive, TFT or Scanned LCDs LM2622, LM2731, LM2733, and LM2621. • Flash Memory Programming • Hand-Held Instruments • 1, 2, 3 or 4 Cell Alkaline Systems • 1, 2 or 3 Cell Lithium-ion Systems Typical Application Circuit 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2004–2005, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
Similar Part No. - LM2623MMX |
|
Similar Description - LM2623MMX |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |