MAX861 Maxim Integrated Products, MAX861 Datasheet
MAX861
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MAX861 Summary of contents
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... pin reduces current consumption to less than 1µA. The MAX860/MAX861 are suitable for use in applications where the ICL7660 and MAX660's switching frequencies are too low. The MAX860/MAX861 are available in 8-pin µMAX and SO packages. ________________________Applications Portable Computers Medical Instruments Interface Power Supplies Hand-Held Instruments ...
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... CONDITIONS Inverter GND Doubler OUT MAX860I GND FC = OUT MAX860M FC = GND FC = OUT MAX861I GND FC = OUT MAX861M FC = GND FC = OUT V = 5V, V more negative than -3.75V DD OUT V = 3V, V more negative than -2.5V DD OUT I = 50mA 10mA may damage the device and should even instantaneously, or device unless ...
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... ESR may reduce output voltage and efficiency. Note 3: MAX860/MAX861 may draw high supply current during startup the minimum operating supply voltage. To guaran- tee proper startup, the input supply must be capable of delivering 90mA more than the maximum load current. ...
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... O TEMPERATURE 32 ALL FREQUENCIES + -60 -40 - 100 120 140 TEMPERATURE (°C) MAX861 SUPPLY CURRENT vs. SUPPLY VOLTAGE 500 400 DOUBLER OUT 300 INVERTER GND 200 100 SUPPLY VOLTAGE (V) 4 _______________________________________________________________________________________ = +25°C. All capacitor values used are those recom- A OSCILLATOR FREQUENCY vs. SUPPLY VOLTAGE -10 ALL FREQUENCIES, ...
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... All capacitor values used are those recom +4.5V -3.5V OUT -2.4V OUT FUNCTION INVERTER if not DD = +25°C, unless other- A MAX861 OUTPUT CURRENT vs. CAPACITANCE MEDIUM-FREQUENCY MODE f = 100kHz OSC FC = GND V = +4.5V GND V = -3.5V OUT INVERTER MODE V = +3V -2.4V OUT V = +4.5V ...
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... Calculate the output ripple voltage using the formula given in the Capacitor Selection section. Positive Voltage Doubler The MAX860/MAX861 can also operate as positive volt- age doublers (see Typical Operating Circuits). This application requires only two external components, capacitors C1 and C2. The no-load output is twice the input voltage ...
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... Supply Current Smaller __________Applications Information Capacitor Selection The MAX860/MAX861 are tested using 10µF capacitors for both C1 and C2, although smaller or larger values can be used (Table 3). Smaller C1 values increase the output resistance; larger values reduce the output resistance. Above a certain point, increasing the ...
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... GND. Make MAX860 MAX861 OUT “n” -nV OUT IN Figure 2. Paralleling MAX860s or MAX861s to Reduce Output Resistance , but this is IN Paralleling Devices Combined Doubler/Inverter R OF SINGLE DEVICE OUT R = OUT NUMBER OF DEVICES … ...
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... MAX660/MAX665/ICL7660 The MAX860/MAX861 can be used in sockets designed for the MAX660, MAX665, and ICL7660 with a minimum of one wiring change. This section gives advice on installing a MAX860/MAX861 into a socket designed for one of the earlier devices. The MAX660, MAX665, and ICL7660 have an OSC pin – ...
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Frequency-Selectable, Switched-Capacitor Voltage Converters (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 10 ______________________________________________________________________________________ Package Information ...
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... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 11 __________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 (408) 737-7600 © 2003 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products ...