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Partname:ADP1828
Description: Synchronous Buck PWM, Step-Down, DC-to-DC Controller
Manufacturer:Analog Devices
Datasheet:PDF (845K).
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The ADP1828 operates at a pin-selectable, fixed switching frequency of either 300 kHz or 600 kHz, or at any frequency between 300 kHz and 600 kHz with a resistor. The switching frequency can also be synchronized to an external clock up to 2x the part's nominal oscillator frequency. The clock output can be used for synchronizing additional ADP1828s (or the ADP1829 controllers), thus eliminating the need for an external clock source. The ADP1828 includes soft start protection to limit any inrush current from the input supply during startup, reverse current protection during soft start for a precharged output, as well as a unique adjustable lossless current-limit scheme utilizing external MOSFET RDSON sensing.

Click here to download ADP1828 Datasheet
Click here to download ADP1828 Datasheet
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