MAX865

PRODUCTION

Compact, Dual-Output Charge Pump

Generates Bipolar Outputs, Ideal for Space-Sensitive Applications

Data Sheet (Rev. 1) Product Selection Table
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Overview

  • 1.11mm-High µMAX Package
  • Compact: Circuit Fits in 0.08in²
  • Requires Only Four Capacitors
  • Dual Outputs (positive and negative)
  • +1.5V to +6.0V Input Voltage
  • 20kHz (min) Frequency (above the audio range)

The MAX865 is a CMOS charge-pump DC-DC converter in an ultra-small µMAX® package. It produces positive and negative outputs from a single positive input, and requires only four capacitors. The charge pump first doubles the input voltage, then inverts the doubled voltage. The input voltage ranges from +1.5V to +6.0V.

The internal oscillator is guaranteed to be between 20kHz and 38kHz, keeping noise above the audio range while consuming minimal supply current. A 75Ω output impedance permits useful output currents up to 20mA.

The MAX865 comes in a 1.11mm-high, 8-pin µMAX package that occupies half the board area of a standard 8-pin SOIC. For a device with selectable frequencies and logic-controlled shutdown, refer to the MAX864 data sheet.

Applications

  • Data Acquisition
  • LCD Panels
  • Low-Cost Split Supply for Low-Voltage
  • Low-Voltage GaAsFET Bias in Wireless Handsets
  • Split Supply for Analog Circuitry
  • Split Supply from 3 Ni Cells or 1 Li+ Cell
  • VCO and GaAsFET Supplies
MAX865
Compact, Dual-Output Charge Pump
MAX865: Typical Operating Circuit
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Documentation

Data Sheet 1

Reliability Data 1

Design Note 1

Technical Articles 3

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Charge Pumps 1
MAX864
PRODUCTION Dual-Output Charge Pump with Shutdown
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