MIC2290 データシートの表示（PDF） - Micrel

部品番号

コンポーネント説明

メーカー

MIC2290

2mm × 2mm PWM Boost Regulator with Internal Schotty Diode

Micrel 

Micrel, Inc.

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.

MIC2290

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:

VOUT

=

VREF

× ⎜⎛ R1 + 1⎟⎞

⎝ R2 ⎠

where VREF is equal to 1.24V.

October 2007

9

M9999-101907

Share Link: