LN2441 PWM/PFM Automatic Switching Controlled Synchronous DC-DC Converters ■ General Description The LN2441 is a constant frequency, current mode step-down converter.
It is ideal for powering portable equipment that runs from a single cell lithium-Ion (Li+) battery.
Switching frequency is internally set at 1.
5MHz, allowing the use of small surface mount inductor and capacitors.
Automatic PWM/PFM mode operation increases efficiency and decreases output voltage ripple at light loads, further extending battery life.
■ Features  High Efficiency: 96％  1.
5MHz Constant Switching Frenquency  Output Current: 1A  Shutdown Current: 1uA  Short Circuit Protection ■ Typical Application Circuit ■ A...

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