S-1312XXXH Datasheet, PDF (18/38 Pages) ABLIC Inc. – 105°C OPERATION, 5.5 V INPUT, 150 mA VOLTAGE REGULATOR

105°C OPERATION LOW CURRENT CONSUMPTION HIGH RIPPLE-REJECTION LOW DROPOUT CMOS VOLTAGE REGULATOR
S-1312xxxH Series
Rev.1.1_01
3. ON / OFF pin
This pin starts and stops the regulator.
When the ON / OFF pin is set to OFF level, the entire internal circuit stops operating, and the built-in
P-channel MOS FET output transistor between the VIN pin and the VOUT pin is turned off, reducing current
consumption significantly.
Note that the current consumption increases when a voltage of 0.25 V to VIN − 0.3 V is applied to the ON / OFF pin.
The ON / OFF pin is configured as shown in Figure 15 and Figure 16.
3. 1 S-1312xxxH Series A / C type
The ON / OFF pin is internally pulled down to the VSS pin in the floating status, so the VOUT pin is set to the VSS
level.
For the ON / OFF pin current, refer to the A / C type of the ON / OFF pin input current "H" in " Electrical
Characteristics".
3. 2 S-1312xxxH Series B / D type
The ON / OFF pin is internally not pulled up or pulled down, so do not use this pin in the floating status. When not
using the ON / OFF pin, connect the pin to the VIN pin.
Table 12
Product Type ON / OFF Pin
Internal Circuit
VOUT Pin Voltage
Current Consumption
A/B/C/D
A/B/C/D
"H": ON
"L": OFF
Operate
Stop
Set value
VSS level
ISS1^*1
ISS2
*1. Note that the IC's current consumption increases as much as current flows into the pull-down resistor when
the ON / OFF pin is connected to the VIN pin and the S-1312xxxH Series A / C type is operating (refer to
Figure 15).
VIN
VIN
ON / OFF
ON / OFF
VSS
VSS
Figure 15 S-1312xxxH Series A / C Type
Figure 16 S-1312xxxH Series B / D Type
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