MM1027 데이터 시트보기 (PDF) - Mitsumi

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MM1027

System Reset (with battery back-up)

Mitsumi 

MITSUMI

System Reset (with battery back-up) MM1027, 1081

ON delay time-Temperature

CS detection voltage adjustment (ADJ pin)

PPM

800

Tc pin

(CT=1000PF±60PPM/°C)

750

700

-770

PPM/°C

-706

PPM/°C

-25 0 25 50 75 100 125

Ambient temperature (°C)

CS detection voltage

max.

typ.

4.0

min.

3.0

2.0

10

100

Resistor R1 (kΩ)

How to Adjust Detection Voltage Vs1

1. Connecting a resistor between ADJ pin and Vcc pin

(effective only when lowering detection voltage)

Calculated min. and max. values take

into account resistance, etc. variance

inside the IC.

Refer to Figure 1

2. Using resistors to divide Vcc potential and connect

to ADJ pin

Detection voltage can be determined close to

external resistance value by setting external R2

and R3 values small.

Refer to Figure 2

(However, current increases when R2 and R3 are

made smaller, so set at around R2+R3=6kΩ.)

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