S-11L10 Datasheet, PDF (15/35 Pages) Seiko Instruments Inc – SUPER-LOW OUTPUT LOW DROPOUT CMOS VOLTAGE REGULATOR

SUPER-LOW OUTPUT VOLTAGE LOW DROPOUT CMOS VOLTAGE REGULATOR
Rev.1.0_00
S-11L10 Series
3. ON / OFF pin
This pin starts and stops the regulator.
When the ON / OFF pin is set to the power-off level, the entire internal circuit stops operating, and the built-in P-
channel MOS FET output transistor between the VIN and VOUT pins is turned off, reducing current consumption
significantly.
Since the S-11L10 Series has a built-in discharge shunt circuit to discharge the output capacitance, the VOUT pin is
forcibly set to the V_SS level. The ON / OFF pin is configured as shown in Figure 14 and 15.
(1) S-11L10 Series B type
The ON / OFF pin is internally pulled down to VSS by constant current source, so the VOUT pin is set to the V_SS
level when it is in the floating state. For the ON / OFF pin current, refer to the B type of power-off pin input current
“H” in “„ Electrical Characteristics”.
(2) S-11L10 Series D type
Do not use the ON / OFF pin in the floating state because this pin is internally not pulled up or pulled down. When
not using the ON / OFF pin, connect it to the VIN pin.
Caution Under high temperature in the S-11L10 Series, this IC’s current consumption may increase if
applying voltage of 0.2 V to 0.9 V to the ON / OFF pin.
Logic Type
B/D
B/D
ON / OFF Pin
“L”: Power-off
“H”: Power-on
Table 8
Internal Circuits
Stop
Operate
VOUT Pin Voltage
V_SS level
Set value
Current Consumption
I_SS2
I_SS1
(1) S-11L10 Series B Type
VIN
(2) S-11L10 Series D Type
VIN
ON / OFF
VSS
Figure 14
ON / OFF
VSS
Figure 15
Seiko Instruments Inc.
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