LM2623LD National Semiconductor, LM2623LD Datasheet
LM2623LD
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LM2623LD Summary of contents
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... For Alternative Solutions, See Also: LM2700, LM2622, LM2731, LM2733, and LM2621. Typical Application Circuit © 2005 National Semiconductor Corporation Features n Good Efficiency Over a Very Wide Load Range n Very Low Output Voltage Ripple n Small, Mini-SO-8 Package (Half the Footprint of Standard 8 pin SO Package ...
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... Order Number Package Type LM2623MMX Mini SO-8 LM2623AMMX Mini SO-8 LM2623AMM Mini SO-8 LM2623MM Mini SO-8 LM2623LDX LLP-14 LM2623ALDX LLP-14 LM2623LD LLP-14 LM2623ALD LLP-14 www.national.com LLP Package 20038802 Top View Mini SO-8 (MM) Package 20038818 Top View NSC Package Package Drawing Marking ...
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Pin Description LLP-14 Pin MSOP-8 Pin 12 DAP Name Function NC No Connect Power Ground (LLP Pins 2 & ...
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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. SW Pin Voltage BOOT and FB Pins DD FREQ Pin T (Note 2) Jmax Storage Temperature Range Lead Temp. (Soldering, 5 sec) Power Dissipation (T =25˚C) A (Note 2) ...
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Electrical Characteristics Note 8: Junction to ambient thermal resistance (θ standard JESD51-17. The test board layer FR-4 board measuring 102mm x 76mm x 1.6mm with array of thermal vias. The ground plane on ...
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Typical Performance Characteristics Efficiency 5.0V OUT Frequency vs V Typical R DS(ON) Temperature www.national.com IN 20038829 IN 20038828 vs 20038825 Temperature FB 20038831 Maximum Start Up Voltage vs Temperature 20038826 Typical Current Limit ...
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Detailed Description OPERATING PRINCIPLE The LM2623 is designed to provide step-up DC-DC voltage regulation in battery-powered and low-input voltage sys- tems. It combines a step-up switching regulator, N-channel power MOSFET, built-in current limit, thermal limit, and volt- age reference in ...
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Detailed Description PULSE FREQUENCY MODULATION (PFM) Pulse Frequency Modulation is typically accomplished by switching continuously until the voltage limit is reached and skipping cycles after that to just maintain it. This results in a somewhat hysteretic mode of operation. The ...
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Design Procedure NON-LINEAR EFFECT The LM2623 is very similar to the LM2621. The LM2623 is based on the LM2621, except for the fact that the LM2623 takes advantage of a non-linear effect that allows for the duty cycle to be ...
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Physical Dimensions For Order Numbers, refer to the table in the "Ordering Information" section of this document. www.national.com inches (millimeters) unless otherwise noted 8-Lead Mini SO-8 (MM) NS Package Number MUA08A 10 ...
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