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UM3501 - Synchronous Step-Down DC-DC Converter

General Description

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.

Key Features

  • include lower internal reference voltage with 2% accuracy, over temperature protection, and over current protection.

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Datasheet Details

Part number UM3501
Manufacturer Union Semiconductor
File Size 409.36 KB
Description Synchronous Step-Down DC-DC Converter
Datasheet download datasheet UM3501 Datasheet

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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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UM3501 600mA, 1.2MHz, Synchronous Step-Down DC-DC Converter UM3501 SOT23-5 UM3501DA DFN6L 2.0×2.0 General Description 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.