Automotive ICs

Automotive, 125°C Operation, 36 V Input, 250 mA Voltage Regulator S-19212B/DxxA Series

The S-19212B/DxxA Series, developed by using high-withstand voltage CMOS process technology, is a positive voltage regulator with a high-withstand voltage, low current consumption and high-accuracy output voltage, and has a built-in ON / OFF circuit.
The S-19212B/DxxA Series operates at the maximum operation voltage of 36 V and a low current consumption of 6.5 μA typ., and has a built-in low on-resistance transistor which provides a very small dropout voltage and a large output current.
Also, a built-in overcurrent protection circuit to limit overcurrent of the output transistor and a built-in thermal shutdowncircuit to limit heat are included.

Caution: This product can be used in vehicle equipment and in-vehicle equipment. Before using the product in the purpose, contact to SII is indispensable.


Output voltage
2.5 V to 16.0 V, selectable in 0.1 V step
Input voltage
3.0 V to 36 V
Output voltage accuracy
±2.0% (Tj = -40°C ~ +125°C)
Current consumption
During operation: 6.5 µA typ., 8.5 µA max. (Tj = −40°C ~ +125°C)
During power-off: 0.1 µA typ., 3.5 µA max. (Tj = −40°C ~ +125°C)
Output current
Possible to output 250 mA (at Vin ≧ Vout(s) + 2.0 V)*1
Input capacitor
A ceramic capacitor can be used. (1.0 μF or more) 
Output capacitor
A ceramic capacitor can be used. (1.0 μF to 100 μF) 
Built-in overcurrent protection circuit
Limits overcurrent of output transistor.
Built-in thermal shutdown circuit
Detection temperature 165°C typ. 
Built-in ON / OFF circuit
Ensures long battery life
Built-in discharge shunt circuit
Discharges the electric charge of the output capacitor during power-off. 
(Rlow = 70 kΩ typ.)
Operation temperature range
Ta=-40°C to +125°C
Lead-free (Sn 100%), halogen-free
Withstand 45 V load dump
AEC-Q100 qualified*2

*1. Please make sure that the loss of the IC will not exceed the power dissipation when the output current is large. 
*2. Contact our sales office for details.


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  • For automotive use (engine, transmission, suspension, ABS, related-devices for EV / HEV / PHEV, etc.)