MAX863EEE+

MAXIM INTEGRATED PRODUCTS  MAX863EEE+  芯片, 直流/直流控制器

The is a dual, high efficiency, PFM, step-up DC-DC controller in 16 pin QSOP package. The dual output DC-DC converter contains two independent step-up controllers in a single compact package. This monolithic Bi-CMOS design draws only 85µA when both controllers are on. The input range extends down to 1.5V, permitting use in organizers, translators and other low-power hand-held products. It provides 90% efficiency at output loads from 20mA to over 1A. Device uses a current-limited, pulse frequency modulated PFM control architecture that reduces start-up surge currents and maintains low quiescent currents for excellent low-current efficiency. Each controller drives a low cost, external, N-channel MOSFET switch, whose size can be optimized for any output current or voltage. It is used in 2-cell and 3-cell portable equipment, organizers, translators, palmtop computers, personal digital assistants PDAs and dual supply logic and LCD.

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Supply voltage range is 1.5V to 11V

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Operating temperature range from -40°C to 85°C

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85µA max total quiescent supply current

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Current of 1µA in shutdown mode

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Independent shutdown inputs

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Drives surface mount, dual N-channel MOSFETs

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Low-battery input/output comparator

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Step-up/down configurable