General Purpose, Gated Oscillator Based, DC/DC Boost Converter

The LM2623 is a high efficiency, general purpose, Step-up DC-DC Switching Regulator for battery-powered and low input voltage systems. It accepts an input voltage between .8 and 14 volts and converts it into a regulated output voltage between 1.24 and 14 volts. Efficiencies up to 90% are achievable with the LM2623.
In order to adapt to a number of applications, the LM2623 allows the designer to vary the output voltage, the operating frequency (300kHz to 2 MHz) and duty cycle (17% to 90%) to optimize the part's performance. The selected values CAN be fixed or CAN vary with battery voltage or input to output voltage ratio. The LM2623 uses a very simple, on/off regulation mode to produce good efficiency and stable operation over a wide operating range. It normally regulates by skipping switching cycles when it reaches the regulation limit (Pulse Frequency Modulation).
Note: Please read the "Non-Linear Effect" and "Choosing The Correct C3 Capacitor" sub-sections of the Design Procedure section of this data sheet, so that any challenges with designing with this part CAN be taken into account before a board design/layout is finalized.
For Alternative Solutions, See Also: LM2700 LM2622 LM2731 LM2733 and LM2621.
By National Semiconductor Corporation
Part Manufacturer Description Datasheet Samples
LM2623LD/NOPB Texas Instruments 0.8V to 14V input voltage, 2A load current, step-up DC-DC 14-WSON -40 to 85
LM2623LD Texas Instruments 1.2A SWITCHING REGULATOR, 2000kHz SWITCHING FREQ-MAX, DSO14, LLP-14
LM2623AMMX Texas Instruments 2.2A SWITCHING REGULATOR, 2000kHz SWITCHING FREQ-MAX, PDSO8, MINI, SO-8
LM2623ALD Texas Instruments 2.2A SWITCHING REGULATOR, 2000kHz SWITCHING FREQ-MAX, DSO14, LLP-14
LM2623AMM Texas Instruments 0.8V to 14V input voltage, 2A load current, step-up DC-DC 8-VSSOP -40 to 85
LM2623QNHLTQ1 Texas Instruments Gated-Oscillator-Based Automotive DC-DC Boost Converter 14-WSON -40 to 125
LM2623MM Texas Instruments 1.2A SWITCHING REGULATOR, 2000kHz SWITCHING FREQ-MAX, PDSO8, MINI, SO-8
LM2623MM/NOPB Texas Instruments 0.8V to 14V input voltage, 2A load current, step-up DC-DC 8-VSSOP -40 to 85
LM2623MMX/NOPB Texas Instruments 0.8V to 14V input voltage, 2A load current, step-up DC-DC 8-VSSOP -40 to 85
LM2623ALD/NOPB Texas Instruments 0.8V to 14V input voltage, 2A load current, step-up DC-DC 14-WSON -40 to 85
LM2623 's PackagesLM2623 's pdf datasheet
LM2623EV
LM2623ALD
LM2623LD
LM2623ALDX LLP
LM2623LDX LLP
LM2623AMM LLP
LM2623MM LLP
LM2623AMMX SOIC
LM2623MMX SOIC
LM2623A-MDC SOIC
LM2623A-MWC SOIC




LM2623 Pinout, Pinouts
LM2623 pinout,Pin out
This is one package pinout of LM2623,If you need more pinouts please download LM2623's pdf datasheet.

LM2623 Application circuits
LM2623 circuits
This is one application circuit of LM2623,If you need more circuits,please download LM2623's pdf datasheet.


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