_5_V_from__5_V_or_five_to_eight_cells

Published:2009/7/25 4:09:00 Author:Jessie | From:SeekIC

Figure 8-116 shows a MAX739 PWM regulator connected to provide -5 V from a five- to eight-cell battery (or a fixed +5-V source). Figure 8-117 shows the efficiency curves. The input voltage range is 3.8 V to 11 V, with a no-load start-up of 4 V maximum, a quiescent current of 1.8 mA (VIN = 5 V), a maximum load current of 200 mA (VIN =5 V), and a 1-μA shutdown current. MAXIM BATTERY MANAGEMENT CIRCUIT COLLECTION, 1994, P. 57.



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