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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This is probably the cause of the problem. The situation is similar with other stabilizers. The table clearly indicates a distinctly lower consumption of the negative ST stabilizer. Datadheet, components by other manufacturers behave differently. It was not necessary to graph such a characteristics for a MC since the output voltage remained almost constant.
KA Datasheet PDF – Fairchild Semiconductor
Consumption no load Consumption 1k load LCV 2. Two stabilizers were used for comparison. Again, there was V.
We have contacted local subsidiary of the Motorola company since they develop and oa7905 similar series of IC’s here in the Czech Republic. Here, minimum load current is specified: So, keep this possibility in mind when designing your own applications.
Voltage regulators (stabilizers) 78xx and 79xx
Consumption no load Consumption 1k load LCV. After their advice we have tested whether this problem can be caused by oscillating of the stabilizer. The whole thing worked about a year or so. A similar internal schematic is there; however, the values of the components are legible. Since the stabilizers are used more often, several other parts are shown in the graph as well.
Please note the differences in kka7905 sctructure. Well, I bought a new L by ST. The comparison in this article is not totally objective. The negative voltage was used to power operational amplifiers on a second board as well.
The TAS is interesting too – it has the same fault. The fact that we found this fault in ST parts only does not signify that other manufacturers’ ICs are free from it. The marginal current 4mA corresponds to a 2k load. Output VA characteristics of a L However, we think it necessary to inform our readers about fundamental faults and errors of electronics components that dayasheet cost a satasheet of time.
The 79xx voltage regulators series made by ST have to be connected to a load dxtasheet at least 5 mA. This is true, BUT: There is no such information in L79xx datasheets see picture way above. The ST company can argue that this is possible; however, that the voltage from If ST really does use such an internal structure, the problem is most likely caused by unsuitable values of resistors around the 6.
KA Datasheet –
We do our own development, too, and we do understand that it is not that easy to design and document something. The fault is definitely caused by ST, the manufacturer. 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. If this is an intention to reduce internal consumption of the circuit to a minimum, at the expense of problems with output voltage with no ka705, it should have been mentioned in the datasheet.
May – 0: We believe that the entire problem is caused by inadequate values of resistors between the input and the output. This is true, BUT:. At first, we came to a wrong conclusion, that the faulty stabilizers are sold at GM Electronic only, and we have released this information prematurely.
Some time ago, I used a pair of and to generate symmetrical reference voltage in my circuit. However, the fault does not occur for commonly used input voltages.
Recommended operating circuit is shown. Unfortunately, we could not get a sample to measure. Stabilizers by ST differ, beginning from a certain voltage.