Voltage stabilizer on the K142EN2 chip. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Voltage stabilizer on the K142EN2 chip. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Surge Protectors

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Microcircuits of the K142EN series are voltage stabilizers with adjustable output voltage and overload protection. Such microcircuits have proven themselves in low-power stabilizers at currents up to 50 ... 150 mA.

However, if it is necessary to power the load with a current consumption exceeding the maximum allowable for microcircuits, the stabilizer has to be supplemented with external control transistors.

Voltage stabilizer on the chip K142EN2

In a stabilizer designed for a load current of 0,5 A, the protection device trips at a current of 1,1 A.

At this moment, the output voltage of the stabilizer decreases to 3 V. The device returns to operating mode at a load current slightly less than 1,1 A, however, the stabilizer cannot be operated in this mode.

The short circuit current does not exceed 70 mA. The stabilization coefficient at the rated load current is 100. If the load is turned off, the output voltage increases by no more than 0,1%.

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