R3115Z 데이터 시트보기 (PDF) - RICOH Co.,Ltd.

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R3115Z

LOW VOLTAGE DETECTOR WITH OUTPUT DELAY

RICOH Co.,Ltd. 

• Voltage level Indicator Circuit (lighted when the power runs out)

(Nch Open Drain Output)

VDD

VDD

CD R3115Zxx1A

Series

OUT

CD

GND

R3115Z

• Detector Threshold Adjustable Circuit

(Nch Open Drain Output)

VDD

Ra

VDD

CD R3115Zxx1A

C

Rb

Series OUT

CD

GND

Adjusted Detector Threshold

=(−VDET)×(Ra+Rb)/Rb

Hysteresis Voltage

=(VHYS)×(Ra+Rb)/Rb

∗) If the value of Ra is set excessively large, voltage

drop may occur caused by the supply current of

IC itself, and detector threshold may vary.

• Window Comparator Circuit

(Nch Open Drain Output)

VDD

CD R3115Zxx1A

VDD

Series OUT

CD R3115Zxx1A OUT

Series VDET1

GND

GND

VDD

OUT

VDD

VDET1 VDET2

VSS

OUT

VSS

• Over-charge priventing Circuit

Light

R1 R2

D1

R4

VDD

R3115Zxx1A CD

R3 OUT

Series

CD

GND

23

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