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MIC2290BML Datasheet(PDF) 9 Page - Microchip Technology

No. de pieza MIC2290BML
Descripción Electrónicos  2mm × 2mm PWM Boost Regulator with Internal Schotty Diode
PDF  13 Pages
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Fabricante Electrónico  MICROCHIP [Microchip Technology]
Página de inicio  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MIC2290BML Datasheet(HTML) 9 Page - Microchip Technology

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Micrel, Inc.
MIC2290
October 2007
9
M9999-101907
Input capacitor
A minimum 1µF ceramic capacitor is recommended for
designing
with
the
MIC2290.
Increasing
input
capacitance will improve performance and greater noise
immunity on the source. The input capacitor should be
as close as possible to the inductor and the MIC2290,
with short traces for good noise performance.
Feedback Resistors
The MIC2290 utilizes a feedback pin to compare the
output to an internal reference. The output voltage is
adjusted by selecting the appropriate feedback resistor
network values. The R2 resistor value must be less than
or equal to 5kΩ (R2 ≤ 5kΩ). The desired output voltage
can be calculated as follows:
⎟
⎠
⎞
⎜
⎝
⎛
+
×
=
1
R2
R1
V
V
REF
OUT
where VREF is equal to 1.24V.



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