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MIC2253

MICREL
Part Number MIC2253
Manufacturer MICREL
Description 3.5A 1MHz High Efficiency Boost Regulator
Published Mar 10, 2011
Detailed Description MIC2253 3.5A 1MHz High Efficiency Boost Regulator with OVP and Softstart General Description The MIC2253 is a high powe...
Datasheet PDF File MIC2253 PDF File

MIC2253
MIC2253

Overview
MIC2253 3.
5A 1MHz High Efficiency Boost Regulator with OVP and Softstart General Description The MIC2253 is a high power density 1MHz PWM DC/DC boost regulator.
The 3.
5A minimum 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.
5V 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 is available in a low profile 12-pin 3mm x 3mm MLF© package.
To prevent a high inrush current, a minimum 1ms soft-start period is set by default and the MIC2253 has the ability to extend the soft-start period with an external capacitor.
Datasheet and support documentation can be found on Micrel’s web site at: www.
micrel.
com.
Features • • • • • • • • • • • • • 3.
5A minimum switch current 1.
245V ± 3% feedback voltage 2.
5V to 10V input voltage Output over-voltage protection (OVP) Externally programmable soft-start Output voltage up to 30V (max) Fixed 1MHz operation <1% line regulation 0.
1µA shutdown current Over temperature protection Under-voltage lockout (UVLO) 12-pin 3mm x 3mm leadless MLF® 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 ___________________________________________________________________________________________________________ Typical Application www.
DataSheet4U.
com MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
Micrel Inc.
• 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.
micrel.
com February 2010 M9999-021710-B Micrel, Inc.
MIC2253 Ordering Information Part Number MIC2253-06YML ® ...


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