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MAX1681 - Switched-Capacitor Voltage Converters

Download the MAX1681 datasheet PDF. This datasheet also covers the MAX1680 variant, as both devices belong to the same switched-capacitor voltage converters family and are provided as variant models within a single manufacturer datasheet.

General Description

The MAX1680/MAX1681 inductorless switched-capacitor voltage converters either invert an input voltage of +2.0V to +5.5V or double it while supplying up to 125mA output current.

They have a selectable-frequency option that allows the use of small capacitors: 4.7µF (MAX1680), 1µF (MAX1681).

Key Features

  • o Selectable Switching Frequencies: 125kHz/250kHz (MAX1680) 500kHz/1MHz (MAX1681) o Allow Use of Small Capacitors (1µF for the MAX1681) o 125mA Output Current o 3.5Ω Output Impedance o 1µA Logic-Controlled Shutdown o Configurable as Voltage Inverters or Doublers o +2.0V to +5.5V Input Voltage Range o Available in 8-Pin SO Packages o 90% Efficiency MAX1680/MAX1681 ________________________.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MAX1680-Maxim.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

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Other Datasheets by Maxim Integrated (now Analog Devices)

Part Number Description
MAX1680 Switched-Capacitor Voltage Converters
MAX1682 Switched-Capacitor Voltage Doublers
MAX1683 Switched-Capacitor Voltage Doublers
MAX1684 Low-Noise / 14V Input / 1A / PWM Step-Down Converters
MAX1685 Low-Noise / 14V Input / 1A / PWM Step-Down Converters

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
19-1247; Rev 0; 7/97 125mA, Frequency-Selectable, Switched-Capacitor Voltage Converters _______________General Description The MAX1680/MAX1681 inductorless switched-capacitor voltage converters either invert an input voltage of +2.0V to +5.5V or double it while supplying up to 125mA output current. They have a selectable-frequency option that allows the use of small capacitors: 4.7µF (MAX1680), 1µF (MAX1681). With their high output current capability, these charge-pump devices are suitable replacements for inductor-based regulators, which require more expensive external components and additional board space. The devices’ equivalent output resistance (typically 3.5Ω) allows them to deliver as much as 125mA with only a 440mV drop.