MAX680 +5V to 䔮V Voltage Converter


MAX680 +5V to &#17710V Voltage Converter RSS Sample
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Maxim Integrated
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The MAX680/MAX681 are monolithic, CMOS, dual charge-pump 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.

* 95% Voltage-Conversion Efficiency * 85% Power-Conversion Efficiency * +2V to +6V Voltage Range * Only Four External Capacitors Required (MAX680) * No Capacitors Required (MAX681) * 500µA Supply Current * Monolithic CMOS Design

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