MIC2253-06YML EV: 5V @ 3A, 2.5 ~ 10V in, Boost

Summary

The MIC2253 is a high power density 1MHz PWM DC/DC boost regulator. The 3.5A maximum switch current limit combined with a 1MHz switching frequency allows the MIC2253 to use smaller inductors and deliver high power in a tiny solution size.

The 2.5 to 10V input voltage range of MIC2253 allows direct operation from 1 and 2 cell Li-ion as well as 3 to 4 cell NiCad, NiMH, Alkaline or lithium batteries. Maximum battery life is assured with a low 0.1µA shutdown current.

The MIC2253 evaluation board requires a single 10W bench power source adjustable from 2.5V to 10V. The load can either be active (electronic load) or passive (resistor) with the capability to dissipate 7W. It is ideal to have an oscilloscope available to view the circuit waveforms, but not essential. For the simplest test, two voltage meters are required to measure the input and output voltage. For efficiency measurements, two voltage meters and two ammeters are required to prevent errors due to measurement inaccuracies.

Specifications

Manufacturer	Microchip Technology
Category	AC/DC and DC/DC Conversion
Sub-Category	DC/DC SMPS - Single Output
Eval Board Part Number	576-4540-ND
Eval Board Supplier	Microchip Technology
Eval Board	Board not Stocked
Topology	Step Up
Outputs and Type	1 Non-Isolated
Voltage Out: Factory Set	5 V
Current Out	3.5 A
Voltage In	2.5 ~ 10 V
Efficiency @ Conditions	>86%, 4.5V in, 5V @ 0.3~ 2.4 A >82%, 3.6V in, 5V @ 0.3 ~ 1.8 A >80%, 2.5V in, 5V @ 0.29 0.92 A
Voltage Out Range	Up to 30 V
Features	Over Voltage Protection PFM or PWM Shutdown, Enable, Standby Soft Start Thermal Protection Under Voltage Protection, Brown-Out
Switching Frequency	1 MHz
Standby Current [Typical]	100 nA
Quiescent Current [Typical]	15 mA
Component Count + Extras	14 + 0
Internal Switch	Yes
Design Author	Microchip Technology
Application / Target Market	Cell Phones Digital Cameras GPS Handheld games Portable Devices USB Powered Devices
Standby Current [Maximum]	1 µA
Quiescent Current [Maximum]	23 mA
Main I.C. Base Part	MIC2253-06YML
Date Created By Author	2011-04
Date Added To Library	2015-01