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MAX861IUA Datasheet(PDF) 5 Page - Maxim Integrated Products |
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MAX861IUA Datasheet(HTML) 5 Page - Maxim Integrated Products |
5 / 11 page MAX860/MAX861 50mA, Frequency-Selectable, Switched-Capacitor Voltage Converters 5 Maxim Integrated 90 70 80 0 0.33 MAX861 OUTPUT CURRENT vs. CAPACITANCE HIGH-FREQUENCY MODE CAPACITANCE ( μF) 4.7 40 20 1 2.2 22 60 10 10 30 50 VIN = +4.5V, VOUT = -3.5V VIN = +4.5V, VOUT = -4V VIN = +3V, VOUT = -2.4V VIN = +3V, VOUT = -2.7V fOSC = 250kHz FC = OUT LV = GND INVERTER MODE 80 70 0 0.33 MAX861 OUTPUT CURRENT vs. CAPACITANCE MEDIUM-FREQUENCY MODE CAPACITANCE ( μF) 4.7 40 20 1 2.2 22 60 10 10 30 50 VIN = +4.5V, VOUT = -3.5V VIN = +3V, VOUT = -2.4V VIN = +4.5V, VOUT = -4V VIN = +3V, VOUT = -2.7V fOSC = 100kHz FC = GND LV = GND INVERTER MODE ______________________________________________________________Pin Description ____________________________Typical Operating Characteristics (continued) (All curves generated using the inverter circuit shown in the Typical Operating Circuits with LV = GND and TA = +25°C, unless other- wise noted. Test results also valid for doubler mode with LV = OUT and TA = +25°C. All capacitor values used are those recom- mended in Table 3, unless otherwise noted. The output resistance curves represent the resistance of the device itself, which is RO in the equation for ROUT shown in the Capacitor Selection section.) INVERTER DOUBLER Doubled Positive Output Flying-Capacitor Negative Terminal Ground Low-Voltage-Operation Input. Connect to OUT. Active-Low Shutdown Input. Connect to GND pin if not used. Connect to OUT to disable the charge pump. Positive Input Supply Flying-Capacitor Positive Terminal Frequency Control, see Table 1 FUNCTION Positive Input Supply VDD 8 Flying-Capacitor Negative Terminal C1- 4 Negative Output OUT 5 Low-Voltage-Operation Input. Connect to GND. LV 6 Active-Low Shutdown Input. Connect to VDD if not used. Connect to GND to disable the charge pump. – S — H — D — N – 7 Ground GND 3 Flying-Capacitor Positive Terminal C1+ 2 Frequency Control, see Table 1 FC 1 NAME PIN |
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