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MAX1595 - Regulated 3.3V/5.0V Step-Up/Step-Down Charge Pump

General Description

The MAX1595 charge-pump regulator generates either 3.3V or 5V from a 1.8V to 5.5V input.

The unique control architecture allows the regulator to step up or step down the input voltage to maintain output regulation.

Key Features

  • o Ultra-Small: Requires Only Three Ceramic Capacitors o No Inductors Required o Up to 125mA Output Current o Regulated ±3% Output Voltage o 1MHz Switching Frequency o 1.8V to 5.5V Input Voltage o 220µA Quiescent Current o 0.1µA Shutdown Current o Load Disconnect in Shutdown MAX1595.

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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.

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19-2107; Rev 1; 8/02 Regulated 3.3V/5.0V Step-Up/Step-Down Charge Pump General Description The MAX1595 charge-pump regulator generates either 3.3V or 5V from a 1.8V to 5.5V input. The unique control architecture allows the regulator to step up or step down the input voltage to maintain output regulation. The 1MHz switching frequency, combined with a unique control scheme, allows the use of a ceramic capacitor as small as 1µF for 125mA of output current. The complete regulator requires three external capacitors—no inductor is needed. The MAX1595 is specifically designed to serve as a high-power, highefficiency auxiliary supply in applications that demand a compact design. The MAX1595 is offered in spacesaving 8-pin µMAX and high-power 12-pin thin QFN packages.