S-1702 Datasheet, PDF (23/45 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
1. 5 Equivalent circuits of ON / OFF and RESX pins
The ON / OFF and RESX pins are internally fixed to any one of three states; pulled-up (via a pull-up resistor),
pulled-down (via a pull-down resistor), or neither pulled-up nor pulled-down (no down pull-up / pull-down resistor).
For details, refer to “Table 3 Input Types of RESX and ON / OFF Pins”. The equivalent circuits are shown
below.
V_IN V_IN
V_IN
V_IN
V_IN
V_IN
V_IN
ON / OFF
or
RESX
ON / OFF
or
RESX
ON / OFF
or
RESX
V_SS
V_SS
V_SS V_SS
V_SS
V_SS
V_SS
With pull-up resistor
With pull-down resistor
Without pull-up / pull-down resistor
Figure 24 Equivalent Circuits of ON / OFF and RESX Pins
Caution
In product without pull-up / pull-down resistor, do not use the ON / OFF and RESX pins in a floating
status.
Note that applying voltage of 0.3 V to 1.2 V may increase current consumption.
23