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MAX1636 - Low-Voltage / Precision Step-Down Controller

General Description

The MAX1636 is a synchronous, buck, switch-mode, power-supply controller that generates the CPU supply voltage in battery-powered systems.

It achieves ±1% output voltage accuracy and offers the excellent loadtransient response needed by upcoming generations of dynamic-clock CPUs.

Key Features

  • o ±1% DC Accuracy (Adjustable Mode) o Output Overvoltage Crowbar Protection o Output Undervoltage Shutdown o Adjustable Switching Frequency to 340kHz o Low-Dropout Operation o Idle Mode Pulse-Skipping Operation o 1.10V to 5.5V Adjustable Output Voltage o 2.5V/3.3V Dual-Mode Fixed-Output Settings o Internal Digital Soft-Start o 1.1V ±1% Reference Output o 3µA (typ) Shutdown Current o Open-Drain Power-Good Output (RESET) o 20-Pin SSOP Package _______________General.

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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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19-1268; Rev 0; 8/97 KIT ATION EVALU E L B A AVAIL Low-Voltage, Precision Step-Down Controller for Portable CPU Power ____________________________Features o ±1% DC Accuracy (Adjustable Mode) o Output Overvoltage Crowbar Protection o Output Undervoltage Shutdown o Adjustable Switching Frequency to 340kHz o Low-Dropout Operation o Idle Mode Pulse-Skipping Operation o 1.10V to 5.5V Adjustable Output Voltage o 2.5V/3.3V Dual-Mode Fixed-Output Settings o Internal Digital Soft-Start o 1.1V ±1% Reference Output o 3µA (typ) Shutdown Current o Open-Drain Power-Good Output (RESET) o 20-Pin SSOP Package _______________General Description The MAX1636 is a synchronous, buck, switch-mode, power-supply controller that generates the CPU supply voltage in battery-powered systems.