Automotive, 125°C operation
36V input, 500mA, fast transient response linear regulator

S-19218 Series


Proposing the ideal linear regulator to connect to an IG (ignition) power supply

  • The excellent transient response ensures a stable power supply even on power lines subject to high fluctuations.

  • The small capacitors can be used, contributing to reduce footprints and costs.

  • Small size and high-heat dissipating package ensures perfect heat countermeasures able to handle high currents

Automotive, 36V input,
500mA output linear regulator

S-19218 Series

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S-19218 Series

We also provide S-19213 Series, the ideal product for reducing standby current.

Linear regulator with everything: fast response, smaller footprint and heat countermeasures

Excellent transient response

A power supply IC for an automotive device is connected to the IG (ignition) power supply and must provide stable power with excellent transient response even under drastic load and voltage fluctuations.
S-19218 Series responds to this need.
・Input transient response:
     About 1.5 times* (When VIN = 6.0V→13.5V)
     About 2.0 times* (When VIN = 13.5V→6.0V)
・Load transient response:
     About 1.3 times* (When IOUT = 1mA→100mA)
     About 2.0 times* (When IOUT = 100mA→1mA)
(*When compared to other company products with similar functions)

Compatible with small I / O capacitors

From a current and transient response standpoint, power supply ICs using a bipolar process are often connected to an IG (ignition) power supply. However, the large external capacitors they require are a significant disadvantage.
・S-19218 Series permits use of 0.1μF input capacitors and 1.0μF output capacitors.
Since easily available small capacitors can be used instead of high-capacity capacitors, both device footprints and costs can be reduced.

Achieves both heat countermeasures and smaller footprint

S-19218 Series is housed in a TO-252-5S(A) package, which is mounting compatible with the industry standard TO-252-5 package.
The TO-252-5S(A) is a small package that occupies about 35% less board space than the TO-252-5 and is only about half as thick while providing the same level of heat dissipation.
・Under certain operating conditions, S-19218 Series can be substituted for a DC-DC converter to substantially shrink device footprints.

<Our thermal simulation service guide>
We also provide a thermal simulation service to convince customers of the safety of our products.  Contact us≫


  • Constant-voltage power supply for electrical application for vehicle interior
  • Constant-voltage power supply for home electric appliance
  • For automotive use (engine, transmission, suspension, ABS, related-devices for EV / HEV / PHEV, etc.)

Automotive Linear Regulators (125°C operation) Product Lineup


Product name S-19218 Series

  For automotive
Output current 500mA
Output voltage (internally set) 2.5V, 3.0V, 3.3V, 5.0V, 8.0V, 12.0V
Output voltage (externally set) 2.5 V to 30.0 V, settable via external resistor
Input voltage 3.0V to 36.0V
Output voltage accuracy ±1.5% (Tj = −40°C to +125°C)
Package TO-252-5S(A), HSOP-8A
Automotive quality AEC-Q100 qualified, PPAP capable
Operation temperature range Ta=−40°C to +125°C


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S-19218 Series