The MAX863EEE+ 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).
- Supply voltage range is 1.5V to 11V
- Operating temperature range from -40°C to 85°C
- 85μA max total quiescent supply current
- Current of 1μA in shutdown mode
- Independent shutdown inputs
- Drives surface mount, dual N-channel MOSFETs
- Low-battery input/output comparator
- Step-up/down configurable
电源管理, 便携式器材
(EN)
