●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 0.8 V and 14 V and converts it into a regulated output voltage between 1.24 V and 14 V. 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 (300 kHz 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_ sections 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.
● Good Efficiency Over a Very
●Wide Load Range
● Very Low Output Voltage Ripple
● Up to 2-MHz Switching Frequency
● 0.8-V to 14-V Operating Voltage
● 1.1-V Start-up Voltage
● 1.24-V to 14-V Adjustable Output
●Voltage
● Up to 2-A Load Current at Low
●Output Voltages
● 0.17-Ω Internal MOSFET
● Up to 90% Regulator Efficiency
● 80-µA Typical Operating
●Current (Into VDD
●Pin of Supply)
● < 2.5-µA Ensured Supply
●Current In Shutdown
● Small 8-Pin VSSOP Package (Half
●the Footprint of Standard 8-Pin SOIC
●Package); 1.09-mm Package Height
● 4-mm × 4-mm Thermally Enhanced
●WSON Package Option
