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Partname:ML4854
Description:Adjustable, Low-Current, 2-Cell Boost Regulator with Shutdown and Low Battery Detect
Manufacturer:Fairchild Semiconductor
Datasheet:PDF (133K).
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The ML4854 is a low power boost regulator designed for low voltage DC to DC conversion in two-cell battery powered systems such as cell phones and PDAs. The converter starts up at 1.3V and has an operating input voltage range from 1.6V to 4.5V. After the start it operates at an input voltage as low as 0.8V. Output voltage can be adjusted by external resistors from 3.3V to 5V with a maximum load current of 0.5A.

Click here to download ML4854 Datasheet
Click here to download ML4854 Datasheet
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