_5_V_from_a_charge_pump_low_power

Published:2009/7/25 4:16:00 Author:Jessie | From:SeekIC

Figure 8-122 shows a MAX660 charge pump connected to provide -5 V at low power. Figure 8-123 shows the efficiency curve. The input voltage range is 1.5 V to 5.5 V, output impedance is 6.5 (1, quiescent current is 100 μA (VIN = 5 V). maximum load current is 100 mA (VIN = 4.75 V), and shutdown current is 10 μA. The circuit is low noise, with a fixed-frequency oscillation (between 10 and 45 kHz), and with an unregulated output (output voltage follows input variations). MAXIM BATTERY MANAGEMENT CIRCUIT COLLECTION, 1994, P. 60.



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