The SI-3000KD is a series regulator IC using a hypo saturation type PNP bipolar transistor in the power section and it can be used with the low difference of input/output voltages.
It is provided with an ON/OFF terminal which operates in Active High mode and the current consumption of circuits at OFF time is zero.
Two product groups are available. One is a product group which can use a ceramic capacitor for the output capacitor at the voltage of 17V (SI-3012KD, SI-3033KD) and another is a group which can use anelectrolytic capacitor for the output capacitor at the high voltage (35V) (SI-3010KD, SI-3050KD).

Design Support

Related Documents

■Application Note

See More



    ・Compact surface-mount package(TO263-5)
    ・Output current: 1.0A
    ・Low dropout voltage VDIF≦0.6V(at IO=1.0A)
    ・Low circuit current consumption Iq≦600μA
    ・Low circuit at output OFF: Iq(OFF)≦1μA
    ・Built-in overcurrent and thermal protection


    ・Secondary stabilized power supply (local power supply)


Output Voltage 16.0 V
Output Current 1.00 A
Input Voltage 35.00 V
Dropout Voltage 0.6 V
Output Method Variable
Output On / Off YES
Low ESR Capacitor Support NO
Overcurrent Protection Foldback Type

Block Diagram

Block Diagram

Questions or Comments?

Please feel free to contact us if you cannot find the desired product from the lineup.