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UM3503QA - Low Profile Power Module

Description

The UM3503QA is a complete 1A, DC/DC step-down power supply intended for low-power applications.

It is capable of delivering 1A output current over a wide input voltage range from 2.5V to 5.5V.

Features

  • z LDO Replacement z FPGA and DSP Point-of-Load Regulator z Cellular and Smart Phones z MCU, DSP and FPGA Core Supplies z Wireless and DSL Modems z Portable Game Consoles and Instruments z PDAs, GPS z Bluetooth Headsets z Battery-Powered Devices z Ultra Small QFN Package 4.0×4.0×1.05 z High Efficiency: Up to 90% z 1A Output Current z 0.6V Minimum Output Voltage z 2.5V to 5.5V Input Voltage Range z 2.25MHz Switching Frequency z 56μA Quiescent Current z.

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Datasheet preview – UM3503QA

Datasheet Details

Part number UM3503QA
Manufacturer Union Semiconductor
File Size 1.19 MB
Description Low Profile Power Module
Datasheet download datasheet UM3503QA Datasheet
Additional preview pages of the UM3503QA datasheet.

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Full PDF Text Transcription

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UM3503QA 1A, 2.5V to 5.5V Input, Low Profile Power Module UM3503QA QFN24 4.0×4.0 General Description The UM3503QA is a complete 1A, DC/DC step-down power supply intended for low-power applications. It is capable of delivering 1A output current over a wide input voltage range from 2.5V to 5.5V. Switching regulator, inductor and input/output capacitors are integrated into a tiny 4mm×4mm×1.05mm QFN package. Unless the external resistor divider, no additional components are required to accomplish the design. The UM3503QA is engineered to simplify design and to minimize layout constraints. It is ideal replacement of discrete buck converter to save PCB space. The UM3503QA is based on a synchronous step-down DC-DC converter optimized for battery-powered portable applications.
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