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UM3501

600mA，1.2MHz，同步降壓型DC-DC轉(zhuǎn)換器; - High Efficiency: Up to 90%\n- 1.2MHz Constant Switching Frequency\n- 600mA Output Current\n- Integrated Main Switch and Synchronous Rectifier. No Schottky Diode Required\n- 2.5V to 5.5V Input Voltage Range\n- Low Quiescent Current: 50μA\n- Thermal Fault Protection\n- <1μA Shutdown Current\n- Lead Free SOT23-5 Package and DFN6L 2.0×2.0 Package;

UM3501 is a high-efficiency pulse-width-modulated (PWM) step-down DC-DC converter, capable of delivering 600mA output current over a wide input voltage range from 2.5V to 5.5V. The target application of UM3501 is for portable electronic devices that are powered from 1-cell Li-ion battery or from other power sources within the range such as cellular phones, PDAs and handy-terminals. Internal synchronous rectifier with low RDS(ON) dramatically reduces conduction loss at PWM mode. No external Schottky diode is required in practical application. The UM3501 automatically turns off the synchronous rectifier while the inductor current is low and enters discontinuous PWM mode. This can increase efficiency at light load condition.\n\nUM3501 enter shutdown mode and consumes less than 0.1uA when EN pin is pulled low. The operation frequency is set to 1.2MHz. This along with small SOT23-5 package and DFN6L 2.0×2.0 package provides small PCB area application. Other features include lower internal reference voltage with 2% accuracy, over temperature protection, and over current protection.

UM3501

40 Watts DC-DC Converters

UM3501

600mA, 1.2MHz, Synchronous Step-Down DC-DC Converter

UM3501_15

600mA, 1.2MHz, Synchronous Step-Down DC-DC Converter

UM3501DA

600mA, 1.2MHz, Synchronous Step-Down DC-DC Converter

UM3501DA

600mA, 1.2MHz, Synchronous Step-Down DC-DC Converter