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Ⅰ.Overview of product

The MCP1603T-330I-OS is a fully integrated synchronous step-down DC-DC switching regulator developed by Microchip Technology, featuring high efficiency, compact size and stable performance, suitable for various low-voltage power supply scenarios.

Ⅱ.Core parameter

Category:Integrated Circuits (ICs),Power Management (PMIC),Voltage Regulators - DC DC Switching Regulators

Mfr:Microchip Technology

Packaging:Tape & Reel

Part Status:Active

Function:Step-Down

Output Configuration:Positive

Topology:Buck

Output Type:Fixed

Voltage - Input (Min):2.7V

Voltage - Input (Max):5.5V

Voltage - Output (Min/Fixed):3.3V

Current - Output:500mA

Frequency - Switching:2MHz

Operating Temperature:-40°C ~ 125°C (TJ)

Mounting Type:Surface Mount

Package / Case:SOT-23-5 Thin, TSOT-23-5

Ⅲ.Main characteristics

High Efficiency:It achieves a typical efficiency of over 90%, which effectively reduces power loss and improves energy utilization in power supply systems.

Dual Working Modes:It automatically switches between PWM and PFM modes; PWM mode ensures low noise and low output ripple under heavy loads, while PFM mode minimizes quiescent current under light loads for optimal efficiency across the entire load range.

Low Static Current:It features a typical PFM quiescent current of 45μA and a shutdown current as low as 0.1μA, which is conducive to extending the service life of battery-powered devices.

Stable Output:With fixed 3.3V output voltage, it has excellent line regulation (0.3%/V typical) and load regulation (0.35% typical), providing stable power supply for downstream components.

Comprehensive Protection:It is equipped with under-voltage lockout (UVLO), over-temperature protection and over-current protection, effectively preventing the chip from being damaged under abnormal working conditions.

Ⅳ.Application field

Cellular Phones: Used as a step-down regulator to provide stable 3.3V power for the core chips, display modules and audio components of mobile phones, ensuring stable operation of the device.

Digital Cameras: Supplies power to the image sensor, processing chip and display screen of digital cameras, with low noise and stable output to avoid image distortion caused by power fluctuations.

USB-Powered Devices: Suitable for USB-powered small devices such as USB flash drives, USB hubs and portable USB fans, converting 5V USB input to 3.3V stable output to meet device power requirements.

Portable Headsets:Provides reliable power for the Bluetooth module and audio amplifier of wireless headsets, with low static current to extend the standby time of the headsets.

Personal Digital Assistants (PDAs): Powers the processor, memory and display of PDAs, featuring compact size and high efficiency to adapt to the miniaturized and low-power design of PDAs.

Portable Computers:Used in ultra-thin notebooks and tablet computers to supply power to peripheral modules such as touchpads and interface controllers, saving space and reducing power consumption.

Ⅴ.Summary

The MCP1603T-330I-OS is a high-performance, compact step-down DC-DC switching regulator with stable parameters, comprehensive protection and wide application scenarios, which is an ideal power management solution for portable and miniaturized electronic devices.