Datasheet Microchip MIC22405
The MIC22405 is a high efficiency, 4A integrated switch synchronous buck (step-down) regulator
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MIC22405 - 4A Integrated Switch High-Eff Synch Buck Regulator with Freq Prog
4A Integrated Switch High-Efficiency
Synchronous Buck Regulator with
Frequency Programmable upto 4MHz General Description Features The Micrel MIC22405 is a high efficiency, 4A integrated
switch synchronous buck (step-down) regulator. The
MIC22405 is optimized for highest efficiency, achieving
more than 95% efficiency while still switching at 1MHz.
The ultra-high speed control loop keeps the output voltage
within regulation even under the extreme transient load
swings commonly found in FPGAs and low-voltage ASICs.
The output voltage is pre-bias safe and can be adjusted
down to 0.7V to address all low-voltage power needs.
The MIC22405 offers a full range of sequencing and
tracking options. The Enable/Delay (EN/DLY) pin,
combined with the Power Good (PG) pin, allows multiple
outputs to be sequenced in any way during turn-on and
turn-off. The Ramp Controlв„ў (RC) pin allows the device to
be connected to another product in the MIC22xxx and/or
MIC68xxx family, to keep the output voltages within a
certain в€†V on start-up.
The MIC22405 is available in a 20-pin 3mm x 4mm MLF
with a junction operating range from вЂ“40В°C to +125В°C. ...
|Lifecycle Status||Production (Appropriate for new designs but newer alternatives may exist)|
|# of Outputs||1|
|Duty Cycle Max, %||1|
|Input Voltage Range, V||2.9 - 5.5|
|Light Load Efficiency Mode||No|
|Operating Temperature Range, °C||-40 to +125|
|Output Current, mA) Max||4000|
|Output Voltage Range, V||0.7 - 5.5|
|Quiescent Current, mA) type||1.3|
|Regulator Type||Step Down (Buck)|
|SHUTDOWN Current, µA||5|
- Power Management > Switching Regulators > Step Down up to 6V