RT9161-22CV 查看數據表（PDF） - Richtek Technology

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RT9161-22CV

300/500mA Low Dropout Linear Voltage Regulator

Richtek Technology 

RT9161/A

Application Information

A 10uF capacitor with 200mΩ or higher ESR, connecting

between VOUT and GND pins, is recommended for

stability. A capacitor with ESR smaller than 200 mΩ may

cause VOUT oscillation as shown in Figure 1. Operating

temperature should be well considered to ensure that

the capacitance is no less than 10uF over the operating

temperature range. Please take the notice that Aluminum

electrolytic capacitors may cause VOUT oscillation when

operating below -25° C. The capacitance can be increased

without limit for better transient response.

A 1uF or higher capacitor should be placed between VIN

and GND to filter out input noise and ensure stable output

voltage.

Region of Stable COUT ESR vs. Load Current

100

VIN = 3.3V

CIN = 1uF

10 COUT = 10uF

1

0.1

0.01

0

Stable

Instable

100

200

300

400

500

Load Current (mA)

Figure 1

DS9161/A-23 April 2004

6

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