描述 Description

The uP9603 is a high-efficiency synchronous-rectified buck converter with internal power switch. With internal low RDS(ON) switches, the high-efficiency buck converter is capable of delivering up to 2.4A output current for charger interface and a wide input voltage range from 8V to 32V.That operates in either CV (Constant Output Voltage) mode or CC (Constant Output Current) mode, function provides a current limitation function. The uP9603 is constant output voltage 5V/9V/12V for Quick Charge 2.0 ( QC2.0 ) is detected from D+ and D- line and automatically detects whether a connected Powered Device (PD) is Quick Charge 2.0 capable before enabling output voltage adjustment. If a PD not compliant to Quick Charge 2.0 is detected the uP9603 disables output voltage adjustment to ensure safe operation with legacy 5V only USB PDs.

Other features for the buck converter include internal softstart, adjust external current limit setting, 5V/9V/12V LED Status Indication, chip enable, built in fixed and adjustable line-compensation, PTC thermal sense, thermal sense setting, short circuit protection, over voltage, and over temperature protections. It is available in a space saving VQFN4x4-24L package.