MIC2253 Datasheet PDF - MICREL



Part Number MIC2253
Description 3.5A 1MHz High Efficiency Boost Regulator
Page 13 Pages

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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.
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
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
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

MIC2253 datasheet pdf
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MIC2253 pdf
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