+5V to 10V Voltage Converters
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MAX680/MAX681
+5V to ±10V Voltage Converters
General Descri...
Description
Click here for production status of specific part numbers.
MAX680/MAX681
+5V to ±10V Voltage Converters
General Description
The MAX680/MAX681 are monolithic, CMOS, dual chargepump voltage converters that provide ±10V outputs from a +5V input voltage. The MAX680/MAX681 provide both a positive step-up charge pump to develop +10V from +5V input and an inverting charge pump to generate the -10V output. Both parts have an on-chip, 8kHz oscillator. The MAX681 has the capacitors internal to the package, and the MAX680 requires four external capacitors to produce both positive and negative voltages from a single supply.
The output source impedances are typically 150Ω, providing useful output currents up to 10mA. The low quiescent current and high efficiency make this device suitable for a variety of applications that need both positive and negative voltages generated from a single supply.
The MAX864/MAX865 are also recommended for new designs. The MAX864 operates at up to 200kHz and uses smaller capacitors. The MAX865 comes in the smaller µMAX package.
Applications
The MAX680/MAX681 can be used wherever a single positive supply is available and where positive and negative voltages are required. Common applications include generating ±6V from a 3V battery and generating ±10V from the standard +5V logic supply (for use with analog circuitry). Typical applications include:
●● ±6V from 3V Lithium Cell ●● Hand-Held Instruments ●● Data-Acquisition Systems ●● Panel Meters ●● ±10V from ...
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