R3112Q15A-TR 데이터 시트보기 (PDF) - RICOH Co.,Ltd.

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R3112Q15A-TR

LOW VOLTAGE DETECTOR WITH OUTPUT DELAY

RICOH Co.,Ltd. 

2001. Apr. 4

LOW VOLTAGE DETECTOR WITH OUTPUT DELAY

R3112xxx1A/C Series

s OUTLINE

The R3112 Series are voltage detector ICs with high detector threshold accuracy and ultra-low

supply current by CMOS process, which can be operated at an extremely low voltage and is used for

system reset as an example.

Each of these ICs consists of a voltage reference unit, a comparator, resistor net for detector

threshold setting, an output driver, a hysteresis circuit, and an output delay circuit. The detector

threshold is fixed with high accuracy internally and does not require any adjustment. Two output types,

Nch open drain type and CMOS type are available.

Two types of packages, SOT-23-5 and ultra small SC-82AB can be selected so that high density

mounting on boards is possible.

s FEATURES

qBuilt-in Output Delay Circuit• • • • • • • • • • •TYP. 100ms with an external capacitor: 0.022µF

qUltra-low Supply Current• • • • • • • • • • •TYP. 1.0µA (VDD=3.5V)

qWide Range of Operating Voltage • • • • • •0.7∼6.0V(Topt=25°C)

qDetector Threshold • • • • • • • • •Stepwise setting with a step of 0.1V in the range of 0.9V to 5.0V

is possible.

qHigh Accuracy Detector Threshold • • • • • • • ±2.0%

qLow Temperature-Drift Coefficient of Detector Threshold• • • • • • • • • TYP. ±100ppm/°C

qTwo Output Types• • • • • • • • • • • • • • • • • • • Nch Open Drain and CMOS

qTwo Types of Packages • • • • • • • • • • SOT-23-5 (Mini-mold), SC-82AB

s APPLICATIONS

• CPU and Logic Circuit Reset

• Battery Checker

• Window Comparator

• Wave Shaping Circuit

• Battery Back-up Circuit

• Power Failure Detector

s BLOCK DIAGRAMS

R3112XXX1A

VDD

RD

+

-

Vref

CD

R3112XXX1C

VDD

OUT

RD

+

OUT

--

Vref

GND

GND

CD

Rev. 1.10

-1-

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