Small, Mini-SO-8 Package (Half the Footprint of Standard 8 pin SO Package)
1.09 mm Package Height
Up to 2 MHz Switching Frequency
.8V to 14V Operating Voltage
1.1V Start-up Voltage
1.24V - 14V Adjustable Output Voltage
Up to 2A Load Current at low Output Voltages
0.17 Internal MOSFET
Up to 90% Regulator Efficiency
80 µA Typical Operating Current (into VDD pin of supply)
<2.5µA Guaranteed Supply Current In Shutdown
4mm x 4mm Thermally Enhanced LLP Package Option
Description
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.
Small, Mini-SO-8 Package (half the Footprint of Standard 8 pin SO Package)
1.09 mm Package height
Up to 2 MHz Switching Frequency
.8V to 14V Operating Voltage
1.1V Start-up Voltage
1.24V - 14V Adjustable Output Voltage
Up to 2A Load Current at low Output Voltages
0.17 Ohm Internal MOSFET
Up to 90% Regulator Efficiency
80 micro A Typical Operating Current (into Vdd pin of supply)
<2.5microA Guaranteed Supply Current in Shutdown
4mm X 4 mm Thermally Enhanced LLP Package Option
Applications:
Cameras, Pagers and Cell Phones
PDAs, Palmtop Computers, GPS devices
White LED Drive, TFT or Scanned LCDs
Flash Memory Programming
Hand-Held Instruments
1,2, 3 or 4 Cell Alkaline Systems
1, 2, or 3 Cell Lithium-ion Systems
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(CSP-9-111C1)
and Banned Substances and Materials of Interest Specification
(CSP-9-111S2)
for regulatory environmental compliance. Details may be found at:
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Note: The Early Failure Rates (EFR) were calculated as point estimate PPM based on rejects and sample size for EFR.
The Long Term Failure Rates were calculated
at 60% confidence using the Arrhenius equation at 0.7eV activation energy and derating the assumed stress
temperature of 150°C to an application temperature of 55°C.
For more information on Reliability Metrics, please click here.
Internal MOSFET
LM2731
