S-19212DC5A-V5T2U datasheet(15/60 Pages) ABLIC

Part #	S-19212DC5A-V5T2U

Description	AUTOMOTIVE, 125째C OPERATION, 36 V INPUT, 250 mA VOLTAGE REGULATOR

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Manufacturer	ABLIC [ABLIC Inc.]

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AUTOMOTIVE, 125°C OPERATION, 36 V INPUT, 250 mA VOLTAGE REGULATOR

Rev.5.3_00

S-19212B/DxxA Series

15

3. ON / OFF pin

The ON / OFF pin controls the internal circuit and the output transistor in order to start and stop the regulator. When

the ON / OFF pin is set to OFF, the internal circuit stops operating and the output transistor between the VIN pin

and the VOUT pin is turned off, reducing current consumption significantly.

The internal equivalent circuit related to the ON / OFF pin is configured as shown in Figure 16. Since the ON / OFF

pin is neither pulled down nor pulled up, do not use it in the floating status. When not using the ON / OFF pin,

connect it to the VIN pin. Note that the current consumption increases when a voltage of VSL max.*1 to VIN

− 0.3 V is

applied to the ON / OFF pin.

Table 14

Product Type

ON / OFF Pin

Internal Circuit

VOUT Pin Voltage

Current Consumption

B / D

"H": ON

Operate

Constant value*2

ISS1

B / D

"L": OFF

Stop

Pulled down to VSS*3

ISS2

*1. Refer to Table 13 in " Electrical Characteristics".

*2. The constant value is output due to the regulating based on the set output voltage value.

*3. The VOUT pin voltage is pulled down to VSS due to combined resistance (RLOW = 70 k

Ω typ.) of the discharge

shunt circuit and the feedback resistors, and a load.

VSS

ON / OFF

VIN

Figure 16

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