The Microchip provides a high power density, 1 MHz PWM DC/DC boost regulator | Heisener Electronics
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The Microchip provides a high power density, 1 MHz PWM DC/DC boost regulator

Technology Cover
Data di Pubblicazione: 2023-02-27, Microchip Technology

The MIC2253 is a high power density, 1 MHz PWM DC/DC boost regulator. A 12-pin 3mm x 3mm DFN package with a 3.5-A minimum switching current limit combined with a 1 MHz switching frequency allows the MIC2253 to use a smaller inductor and deliver high power in a tiny solution size.


Typical Application Circuit

        

The 2.5V to 10V input voltage range of the MIC2253 allows direct operation from 1 and 2 battery Li-ion as well as 3-4 battery NiCad, NIMH, alkaline or lithium batteries. Maximum battery life with low 0.1μa shutdown current guaranteed. To prevent high inrush current, the MIC2253 has a minimum soft start period of 1ms by default and can be extended with an external capacitor.


Functional Block Diagram

      

Feratures

● 3.5A Minimum Switch Current

● 1.245V ±3% Feedback Voltage

● 2.5V to 10V Input Voltage

● Output Overvoltage Protection (OVP)

● Externally Programmable Soft-Start

● Output Voltage Up to 30V

● Fixed 1 MHz Operation

● < 1% Line Regulation

● 0.1 µA Shutdown Current

● Overtemperature Protection

● Undervoltage Lockout (UVLO)

● 12-Pin 3 mm x 3 mm Leadless DFN Package

● - 40°C to +125°C Junction Temperature Range


Applications

● Mobile Handsets

● Portable Media/MP3 Players

● Portable Navigation Devices (GPS)

● WiFi/WiMax/WiBro Modules

● Digital Cameras

● Wireless LAN Cards

● USB-Powered Devices

● Portable Applications


Package Type

                      

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