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S-19212DC5A-V5T2U Datasheet(PDF) 15 Page - ABLIC Inc. |
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S-19212DC5A-V5T2U Datasheet(HTML) 15 Page - ABLIC Inc. |
15 / 60 page 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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