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MIC2208 Datasheet(PDF) 1 Page - Micrel Semiconductor

Part No. MIC2208
Description  3mmx3mm 1MHz 3A PWM Buck Regulator
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Maker  MICREL [Micrel Semiconductor]
Homepage  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MIC2208 Datasheet(HTML) 1 Page - Micrel Semiconductor

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MIC2208
3mmx3mm 1MHz 3A PWM Buck
Regulator
General Description
The Micrel MIC2208 is a high efficiency PWM buck
(step-down) regulator that provides up to 3A of
output current. The MIC2208 operates at 1MHz and
has external compensation that allows a closed loop
bandwidth of over 100KHz.
The low on-resistance internal p-channel MOSFET
of the MIC2208 allows efficiencies over 94%,
reduces external component count and eliminates
the need for an expensive current sense resistor.
The MIC2208 operates from 2.7V to 5.5V input and
the output can be adjusted down to 1V. The devices
can operate with a maximum duty cycle of 100% for
use in low-dropout conditions.
The MIC2208 is available in the exposed pad 3mm x
3mm MLF-12L package with a junction operating
range from –40°C to +125°C.
Features
2.7 to 5.5V supply voltage
1MHz PWM mode
Output current to 3A
>90% efficiency
Adjustable output voltage option down to 1V
Ultra-fast transient response
External Compensation
Stable with a wide range of output
capacitance
Fully integrated 5A MOSFET switch
Micropower shutdown
Thermal shutdown and current limit
protection
Pb-free 3mm x 3mm MLF-10L package
–40
°C to +125°C junction temperature range
Internal soft-start
Applications
5V or 3.3V Point of Load Conversion
Telecom/Networking Equipment
Set Top Boxes
Storage Equipment
Video Cards
Typical Application
MIC2208
3A 1MHz Buck Regulator
MLF and MicroLeadFrame are trademarks of Amkor Technology
Micrel, Inc • 2180 Fortune Drive • San Jose, Ca 95131 • USA • tel +1 (408) 944-0800 • fax +1 (408) 474-1000 • http://www.micrel.com
September 2005
M9999-092905
www.micrel.com


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