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Synchronous Step Down Controller with 50mA Linear Regulator
ON Semiconductor Corp
Description
The NCP1578 is a voltage mode synchronous step-down controller for high performance systems intended to be used in battery-powered systems. The NCP1578 includes a high efficiency PWM controller with adjustable output, and a 5V/50mA linear regulator. A pin is provided to enable or disable forced PWM mode of operation. An internal power good voltage monitor tracks the SMPS output. NCP1578 also features soft-start sequence, UVLO for linear regulator and switcher, overvoltage protection, overcurrent protection, and thermal shutdown. The IC is packaged in QFN-20
Features
Fixed 5.0V/50mA Internal Linear Regulator. Adjustable PWM Output Voltage 1.5% Accuracy PWM Output Voltage 4.5V to 24V Battery/Adaptor Voltage Range Selectable Force PWM Mode Programmable High Side Current Sense Soft Start and Power Up Sequencing Overvoltage and Undervoltage Protection Porgrammable Delay Power Good Output Thermal Shutdown
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