KA7905 DATASHEET PDF

KA A 1 Amp -5V Voltage Regulator. Part Number: KA Price: $ available for immediate number: KA Full datasheet: KA KA 3-Terminal 1A Negative Voltage Regulator. Features. Output Current in Excess of 1A Output Voltages of V Internal Thermal Overload Protection. KA ON Semiconductor / Fairchild Linear Voltage Regulators REGULATOR, – 5V, A, 4% datasheet, inventory & pricing.

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The whole thing worked about a year or so. Daatasheet shows the dependencies of the output voltage on the input voltage for a L, TAS, KA; both with and without a 1k load. Nothing like that is there. We believe that the entire problem is caused by inadequate values of resistors between the input and the output.

Stabilizers by ST differ, beginning from a certain voltage. This is true, BUT: Values shown were measured for a single sample; other samples as well as stabilizers by other manufacturers behaved similarly.

KA Fairchild 3-Terminal 1A Negative Voltage Regulator ChipFind Datasheet Archive |

It was not necessary to dayasheet such a characteristics for a MC since the output voltage remained almost constant. Two stabilizers were used for comparison.

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Consumption no load Consumption 1k load LCV 1. There is no such information in L79xx datasheets see picture way above. Of course, the output voltage may fluctuate; however, it can’t be four times the nominal output voltage.

Consumption no load Consumption 1k load LCV 2. Recommended operating circuit is shown. May – 0: For comparison, input current of a positive voltage stabilizer is mentioned, too.

KA7905 Datasheet

The comparison in this article is not totally objective. Output VA characteristics of a L If ST really does use such an internal structure, the problem is most likely caused by unsuitable values of resistors around the 6.

datasheey

Here, minimum load current is specified: The ST company can argue that this is possible; however, that the voltage from Values listed below were measured using a nF capacitor. Please note the differences in internal sctructure.

View ka7905 datasheet:

So, keep this possibility in mind when designing your own applications. Download datasheet for L79xx Download datasheet for L78xx Download datasheet for LM Please note the differences in internal sctructure. Well, I bought a new L by ST. So, according to our measuremets, you can get up to 20V at the output of a L without a load. The ST stabilizer is clearly distinct.

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Input voltage 26V DC. However, components by other manufacturers behave differently. After their advice we have tested whether this problem can be caused by oscillating of the stabilizer. datasbeet

This is true, BUT:. The rest of this article analyses the fact, that: At the very end ofthe Czech subsidiary of ST has informed us that information about this behavior will be included in a future update of the respective datasheets.

The comparison is only an example what a developer can buy in an electronics components store. The situation is similar with other stabilizers. Tomas Kouba Jan Rehak Translated by: Then, we have studied carefully the datasheets.

Again, there was V. The fault is definitely caused by ST, the manufacturer.

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