RE46C109 datasheet(8/9 Pages) MICROCHIP

部品番号	RE46C109

部品情報	Voltage Regulator, Voltage Converter and Piezoelectric Horn Driver

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メーカー	MICROCHIP [Microchip Technology]

ホームページ	http://www.microchip.com

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8 / 9 page

RE46C109

Voltage Regulator, Voltage Converter and

R&E International

Piezoelectric Horn Driver

A Subsidiary of Microchip Technology Inc.

Product Specification

DS22168A-page 8

Application Notes continued:

(See application circuit)

Capacitor Selection:

To achieve minimum output voltage ripple, the output capacitor C4 (for VPOS) should have a low ESR (Effective

Series Resistance) value with leads kept as short as possible. Capacitors with long leads increase ripple voltage

due to lead inductance.

Like all Low-Dropout Regulators, the RE46C109 requires an output capacitor connected between VREG (output)

and VSS to stabilize the internal control loop. The recommended capacitance is 10uF. Capacitor values larger

than 10uF are acceptable.

PCB Layout Suggestions:

Due to large transient currents flow in the VDD, VPOS and VSS terminals, minimizing both input and output ripple is

accomplished by placing capacitors as close as possible to the regulator using short direct circuit wiring or traces.

RE46C109 データシート(PDF) 8 Page - Microchip Technology