LR1121BL-21-AF5-A-R datasheet(4/6 Pages) UTC

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LR1121BL-21-AF5-A-R Arkusz danych(PDF) 4 Page - Unisonic Technologies

Numer części	LR1121BL-21-AF5-A-R

Szczegółowy opis	HIGH RIPPLE-REJECTION LDO REGULATOR

PDF	6 Pages

Scroll/Zoom	100%

Producent	UTC [Unisonic Technologies]

Strona internetowa	http://www.utc-ic.com

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4 / 6 page

LR1121B

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

4 of 6

www.unisonic.com.tw

QW-R502-101.G



TEST CIRCUIT

Note:

Input capacitor (CIN): 1.0 μF or more

Output capacitor (CL): 2.2μF or more (tantalum capacitor)



SELECTION OF OUTPUT CAPACITOR (CL)

In this IC, phase compensation and the output capacitor is made for securing stable operation even if the load

current is varied. Therefore, always place a capacitor (CL) of 2.2 μF or more between VOUT and VSS pins. Using a

capacitor whose ESR is outside the optimum range (approximately 0.5 ~ 5Ω), whether larger or smaller, may cause

an unstable output, resulting in oscillation. For this reason, a tantalum electrolytic capacitor is recommended.

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