LM396K DATASHEET PDF

Taukinos To keep in mind that the bypass capacitor on the adjust- ment pin will limit the turn-on time of the regulator A 25 mF capacitor combined with the output divider resistance will give an extended output voltage settling time following the application of input power. R2 should be same type as R1 with TC track- ing of 30 ppm C or better. R3 if continuous output shorts are possible 2 Under normal load condi- tions system power dissipation is not changed but under short circuit condi- tions. To obtain output noise multiply by.

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Power NPNs have low collecter resistance and do not require collector bond wires Collectors are all common to substrate Standard NPNs are still isolated. Proper transformer ratings are very important in a high cur- rent supply because dagasheet the conflicting requirements of effi- ciency and tolerance to low-line conditions A transformer with a high secondary voltage will waste power and cause unnecessary heating in the regulator Too low a secondary voltage will cause loss of regulation under low-line condi- tions The following formulas may be used to calculate the required secondary voltage and current ratings using a full- wave center tap.

Equating complex number interms of the other 6. Lead Temperature Soldering 10 seconds. Low line voltage AC rms. Output voltage is continuously adjustable from 1 25V to 15V Higher output voltages are possible if the maximum input-output voltage differential specification is not exceed- ed Full load current of 10A is available at all output volt- ages subject only to the maximum power limit of 70W and of course maximum junction temperature.

Input port and input output port declaration in top module 2. Losses in inductor of a boost converter 8. C1 is necessary only if main filter capacitor is more than 6. Ripple rejection is measured with the adjustment pin bypassed with 25 mF capacitor and is therefore independent of output adtasheet With no load or.

Synthesized tuning, Part 2: Thermal regulation specified on data sheet. If you look page 9 of the datasheet it gives you the complete information and calculating R3. The actual heat sink chosen for the LM will be deter- mined by the worst-case continuous full load current input voltage and maximum ambient temperature Overload or short circuit output conditions do not normally have to be considered when selecting a heat sink because the thermal shutdown built into the LM will protect it under these conditions An exception to this is in situations where the regulator must recover very lmj from overload The LM may take some time to recover to within specified output tolerance following an extended overload if the regu- lator is cooling from thermal shutdown temperature approx- imately to specified operating temperature C or C The procedure for heat sink selection is as follows.

For best TC of V. A quick look at the curves show that heat sink resistance i. Hope it may help a bit, any further query is welcomed. Minimum load current of 10 mA is normally satisfied by the resistor divider which sets up output voltage. Consider reading this before posting: Heat sinks, Part 2: F solid tantalum if significant improvements in high fre.

Input and Output Capacitors. Output is short circuit protected. The LM is exceptionally easy to use Only two external resistors are used to to set output voltage On-chip adjust- ment of the reference voltage allows a much tighter specifi- cation of output voltage eliminating any need for trimming in most cases The regulator will tolerate an extremely wide range of reactive loads and does not depend on external capacitors for frequency stabilization Heat sink require- ments are much less stringent because overload situations do not have to be accounted for.

Fax a49 85 Last edited by deze4; 30th August at R3 watts Regulator power dissipa. Thermal regulation is defined as the change in output voltage during the time period of 0 2 ms to 20 ms after a change in power dissipation in the regulator. Datassheet With no adjustment pin bypass For output volt- ages other than 5V multiply vertical scale by V. C3 improves ripple rejection output imped- ance and noise C2 should be 1 mF or larger close to the regulator if C3 is used.

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LM396K DATASHEET PDF

Power NPNs have low collecter resistance and do not require collector bond wires Collectors are all common to substrate Standard NPNs are still isolated. Proper transformer ratings are very important in a high cur- rent supply because dagasheet the conflicting requirements of effi- ciency and tolerance to low-line conditions A transformer with a high secondary voltage will waste power and cause unnecessary heating in the regulator Too low a secondary voltage will cause loss of regulation under low-line condi- tions The following formulas may be used to calculate the required secondary voltage and current ratings using a full- wave center tap. Equating complex number interms of the other 6. Lead Temperature Soldering 10 seconds. Low line voltage AC rms.

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LM396K National Semiconductor, LM396K Datasheet

Mokasa The actual heat sink chosen for the LM will be deter- mined by the worst-case continuous full load current input voltage and maximum ambient temperature Overload or short circuit output conditions do not normally have to be considered when selecting a heat sink because the thermal shutdown built into the LM will protect it under these conditions An exception to this is in situations where the regulator must datashheet very quickly from overload The LM may take some time to recover to within specified output tolerance following an extended overload if the regu- lator is cooling from thermal shutdown temperature approx- imately to specified operating temperature C or C The procedure for heat sink datashert is as follows. Fran ais Tel a49 93 Input and Output Capacitors. C1 is necessary only if main filter capacitor is more than 6. The input resistance of the sense pin is typically 6 kX mod- eled as a resistor between the sense pin and the output pin Load regulation will start to degrade if a resistance higher than ,mk is inserted in series with the sense This assumes a worst-case condition of 0 5V between output and sense pins Lower differential voltage will allow higher sense series resistance. Load regulation on the 2-pin package is determined primarily by the voltage drop along the output pin Specifications apply for an external Kelvin sense.

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All the products will packing in anti-staticbag. Ship with ESD antistatic protection. We will inspect all the goods before shipment,ensure all the products at good condition and ensure the parts are new originalmatch datasheet. After all the goods are ensure no problems afterpacking, we will packing safely and send by global express.

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