s-873023cup-afct2u Seiko Instruments Inc., s-873023cup-afct2u Datasheet - Page 32

• Manufacturer Part Number: s-873023cup-afct2u
• Description: High Withstand-voltage Voltage Regulator With Reset Function
• Manufacturer: Seiko Instruments Inc.

32
HIGH WITHSTAND-VOLTAGE VOLTAGE REGULATOR WITH RESET FUNCTION
S-87x Series
6. Shutdown circuit (C/E/G type)
When VPF pin goes low (0.4 V or less) in the C/G type or at the time of voltage detection in the E type
current for the voltage regulator is shut down, the current consumption (excluding the current which flows
through the pull-up resistor) lowers to 3.5 μA or less.
During shutdown, the M1 transistor in the voltage regulator shown in the Figure 17 is off and VOUT pin is
pulled down by R
less.
Caution 1. The output voltage may not become 0 V when the load which makes I
2. DO NOT keep VPF pin floating state or medium potential (between low and high
connected during shutdown.
levels). Otherwise through-type current flows.
1
and R
2
, whose value (R
Seiko Instruments Inc.
1
+R
2
) is 5 MΩ to 10 MΩ. Input current of VPF pin is 0.1 μA or
OUT
under 1 μA is
Rev.8.0
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