Automotive ICs

Automotive, 105°C Operation, 6.5 V Input, 1000 mA Voltage Regulator with Soft-start Function S-19254xxxH Series

The S-19254xxxH Series developed by using high-withstand voltage CMOS process technology, is a positive voltage regulator with high-accuracy output voltage and high output current.
A built-in overcurrent protection circuit to limit overcurrent of the output transistor and a built-in thermal shutdown circuit to limit heat are included. Also, the S-19254xxxH Series includes the soft-start function to adjust the output voltage rising time at power-on or at the time when the ON / OFF pin is set to ON.

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


Output voltage
1.0 V to 5.5 V, selectable in 0.05 V step
Input voltage
2.5 V to 6.5 V
Output voltage accuracy
±3.0% (Tj = −40°C to +105°C)
Dropout voltage
0.38 V typ. (2.6 V output product, at Iout = 1000 mA)
Current consumption
During operation: 120 μA typ., 150 μA max. (Tj = −40°C to +105°C)
During power-off: 0.1 μA typ., 4.5 μA max. (Tj = −40°C to +105°C)
Output current
Possible to output 1000 mA (at Vin ≥ VOUT(S) + 1.0 V)*1
Ripple rejection
60 dB typ. (at f = 1.0 kHz)
Built-in overcurrent protection circuit
Limits overcurrent of output transistor.
Built-in thermal shutdown circuit
Detection temperature 170°C typ.
Built-in soft-start circuit
Adjusts output voltage rising time at power-on or at the time when ON / OFF pin is set to ON.
       Adjustable type: tss = 6.0 ms typ. (Css = 10 nF)
             Soft-start time can be changed by the capacitor (Css).
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.
Operation temperature range
Ta = −40°C to +105°C
Lead-free (Sn 100%), halogen-free
AEC-Q 100 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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