S-19500A03A-E8T1U4 Datasheet, PDF (2/52 Pages) Seiko Instruments Inc – CMOS VOLTAGE REGULATOR WITH WATCHDOG TIMER AND RESET FUNCTION

FOR AUTOMOTIVE 125°C OPERATION HIGH-WITHSTAND VOLTAGE CMOS VOLTAGE REGULATOR WITH WATCHDOG TIMER AND RESET FUNCTION
S-19500/19501 Series
Rev.1.2_01
 Block Diagrams
1. S-19500 Series (Product with watchdog enable function)
VIN
Thermal ^{Overcurrent protection circuit}
shutdown
circuit
+
Reference −
voltage
circuit
VOUT
WI
WEN
WADJ
VSS
Reference
voltage
circuit
WDT
+
circuit
−
Voltage
detection
circuit
+−
−
+
Figure 1
2. S-19501 Series (Product without watchdog enable function)
VIN
WI
WADJ
VSS
Thermal ^{Overcurrent protection circuit}
shutdown
circuit
+
Reference ^−
voltage
circuit
Reference
voltage
circuit
WDT
circuit
+
−
Voltage
detection
circuit
−
+
−
+
Figure 2
DLY
WO / RO
VOUT
DLY
WO
RO
2