S-1702 Datasheet, PDF (31/45 Pages) Seiko Instruments Inc – Built-in overcurrent protection circuit

SUPER-LOW CURRENT CONSUMPTION 150 mA VOLTAGE REGULATOR WITH BUILT-IN HIGH-ACCURACY VOLTAGE DETECTOR AND RESET INPUT FUNCTION
Rev.2.2_01
S-1702 Series
4. Relation of temperature coefficients of detector and regulator blocks
The S-1702 Series has a detector and a regulator in it, and each reference voltage circuit has the same structure so
that both temperature coefficients of detector detection voltage and regulator output interlock.
4. 1 Positive temperature coefficient of regulator output
If the temperature coefficient of regulator output is positive, so is that of detector detection voltage (Figure 35).
−V_DET [V]
Temperature gradient of detector
Temperature gradient of regulator
Figure 35
−40
+25
+85
Ta [°C]
Relation of Temperature Coefficients of Detector and Regulator (When They Are Positive)
4. 2 Negative temperature coefficient of regulator output
If the temperature coefficient of regulator output is negative, so is that of detector detection voltage (Figure 36).
−V_DET [V]
Temperature gradient of detector
Temperature gradient of regulator
Figure 36
−40
+25
+85
Ta [°C]
Relation of Temperature Coefficients of Detector and Regulator (When They Are Negative)
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