HIGH RIPPLE-REJECTION LOW DROPOUT MIDDLE OUTPUT CURRENT CMOS VOLTAGE REGULATOR

S-1132 Series

14

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.

VOUT pin and VSS pin.

The structure of the ON/OFF pin is as shown in Figure 14. Since the ON/OFF pin is neither pulled down nor pulled up

internally, do not use it in the floating status. In addition, note that the current consumption increases if a voltage of 0.3

product type is “A” and to the VIN pin if it is “B”.

Table 7

Product Type

ON/OFF Pin

Internal Circuit

VOUT Pin Voltage

Current Consumption

A

“L”: ON

Operate

Set value

A

“H”: OFF

Stop

B

“L”: OFF

Stop

B

“H”: ON

Operate

Set value

VSS

ON/OFF

VIN

Figure 14