AMS1085 DATASHEET PDF

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AMS Datasheet PDF –

Diodes between the input and output are not usually needed. A thermally conductive spacer can be used, if the case of the device must be electrically isolated, but its added contribution to thermal resistance has to datasheey considered.

The ripple rejection will be a function of output voltage, in circuits without an adjust pin bypass capacitor. F solid tantalum on the output will ensure stability for all operating conditions.

For guaranteed specifications and test conditions, see the Electrical Characteristics. Normal power supply cycling or even plugging and unplugging in the system will not generate current large enough to do any damage.

To ensure safe operating temperatures and reflect more accurately the device temperature, new thermal amms1085 specifications have been developed.

F aluminum covers all cases of bypassing the adjustment terminal. The size of the required adjust pin capacitor is a function of the input ripple frequency. The ripple rejection will be a function of output voltage, in circuits without an adjust pin bypass capacitor.

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F tantalum or ? Careful consideration must be catasheet to all sources of thermal resistance from junction to ambient, including junction-to-case, case-to-heat sink interface and heat sink resistance itself. Line and Load regulation are guaranteed up to 15W power dissipation for M and T packages and 2.

Protection Diodes Unlike older regulators, the AMS family does not need any protection diodes between the adjustment pin and the output and from the output to the input to prevent over-stressing the aams1085. Calculations for both temperatures under certain conditions of ambient temperature and heat sink resistance and to ensure that both thermal limits are met.

(PDF) AMS1085 Datasheet download

Connected as shown, RP is not multiplied by the divider ratio. As with any IC regulator, none the protection circuitry will be functional and the internal transistors will break down if the maximum input to output voltage differential is exceeded. Rectangular pulse U o w level: Dropout voltage is specified over the full output current range of the device.

A problem can occur with a heavy output load when the input voltage is high and the output voltage is low, when the removal of an output short will not permit the output voltage to recover. With this double intersection, the power supply may need to be cycled down to zero and brought up again to make the output recover. The resistance of the wire connecting the regulator to the load will limit the load regulation. In order to ensure the best possible thermal flow from this area of the package to the heat sink proper mounting is required.

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I would invite AMA to send me. Microsecond surge currents of 50A to A can be handled by the internal diode between the input and output pins of the device. Protection Diodes Unlike older regulators, the AMS family does not need any protection diodes between the adjustment pin and the output and from the output to the input to prevent over-stressing the die. Dropout voltage is specified over the full output current range of the device.

The best load regulation is obtained when the top of the resistor divider R1 is connected directly to the case not to the load. Bushing AMS 3 A is kept inside bushing.

F tantalum or ? F aluminum electrolytic or a 22?

The dropout voltage of the device is guaranteed maximum 1. This is the lowest resistance path for the heat flow. Because IADJ is very small and constant it represents a small error and it can usually be ignored. Can flash at 2 Hz during fast forward.

Advanced Monolithic Systems, Inc. Current limit is also trimmed, minimizing the stress under overload conditions on both the regulator and power source circuitry. The best load regulation is obtained when the top of the resistor divider R1 is connected directly to the case not to the load. When the power is turned on, this pin becomes low.