5_V_from_four_cells_inverter_or_flyback

Published:2009/7/24 23:39:00 Author:Jessie | From:SeekIC

Figure 8-102 shows a MAX739 connected to provide a 5-V output from four cells．This circuit uses the MAX739 as an inverter with a battery-referenced output．Theinput voltage range IS 3.8 V to 11 V with a no-load startup of 4 V maximum. Quiescent current (VIN＝5 V）IS 1.8 mA with a maximum load current of 200 mA．Shutdown current is 1 μA, and battery life is 13.5 hours (using four alkaline AAcells, vith a 100-mA load). Figure 8-103 shows the efficiency curves. MAXIM BATTERY MANAGEMENT CIRCUIT COLLECTION, 1994 P.23.



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