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MAX798 - High-Accuracy Step-Down Controller with Synchronous Rectifier for CPU Power

General Description

The high-performance, step-down DC-DC converter provides main CPU power in battery-powered systems.

This buck controller achieves 96% efficiency by using synchronous rectification and Maxim’s proprietary Idle Mode™ control scheme to extend battery life at full-load (up to 10A) and no-load outputs.

Key Features

  • o 96% Efficiency o 4.5V to 30V Input Range o 1.6V to 6V Adjustable Precision Output o o o o o ±0.4% Max Total Load-Regulation Error 0.06%/V Max Line-Regulation Error 5V Linear-Regulator Output Precision 2.505V Reference Output Automatic Bootstrap Circuit MAX798 o 150kHz/300kHz Fixed-Frequency PWM Operation o Programmable Soft-Start o 1.2mA Typical Quiescent Current (VIN = 12V, VOUT = 2.5V) o 1µA Typical Shutdown Current ______________Ordering Information PART MAX798ESE TEMP. RANGE -40°C to +8.

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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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19-1175; Rev 0; 12/96 High-Accuracy Step-Down Controller with Synchronous Rectifier for CPU Power _______________General Description The high-performance, step-down DC-DC converter provides main CPU power in battery-powered systems. This buck controller achieves 96% efficiency by using synchronous rectification and Maxim’s proprietary Idle Mode™ control scheme to extend battery life at full-load (up to 10A) and no-load outputs. The MAX798’s high accuracy meets the demanding requirements of the latest-generation CPUs. Excellent dynamic response corrects output transients caused by the latest dynamic-clock CPUs within five 300kHz clock cycles.