S-87X_1 Datasheet, PDF (26/53 Pages) Seiko Instruments Inc – HIGH WITHSTAND-VOLTAGE VOLTAGE REGULATOR WITH RESET FUNCTION

HIGH WITHSTAND-VOLTAGE VOLTAGE REGULATOR WITH RESET FUNCTION
S-87x Series
Rev.7.2_00
„ Operation Timing Charts
1. Voltage regulator (C/G type)
V_IN [V]
V_SS
t [s]
V_OUT [V]
V_SS
*1 *1
*2
t₁ t₂
t [s]
VPF [V]
H
L
V_SS
t [s]
*1. Indicates shutdown state. When the load current (I_OUT) is less than 1 μA, the output voltage (V_OUT) is
not always V_SS level.
*2. When the V_OUT is shorted at t₁, V_OUT becomes V_SS level. When the short of V_OUT is removed at t₂,
V_OUT returns to normal output.
Figure 15
2. Voltage detector (A/B/F type)
V_IN or V_OUT [V]
V_HYS
+V_DET
−V_DET
t [s]
V_OR [V]
t_pd^*1
t_pd^*1
t_pd^*1
t [s]
*1. Output delay time (t_pd) of the voltage detector can be changed with an external capacitance value to
CD pin. Delay circuit is not included in C/E/G type.
Remark Pull up V_OR through a resistor to V_IN or V_OUT.
Figure 16
26
Seiko Instruments Inc.