AMS1085 DATASHEET PDF

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The value of 22? Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Line and Load regulation are guaranteed up to 15W power dissipation for M and T packages and 2.

AMS1085 数据手册 ( 数据表 ) – Advanced Monolithic Systems Inc

Microsecond surge currents of 50A to A can be handled by the internal diode between the input and output pins of the device. In normal operations it is difficult to get those values of surge currents even with the use of large output capacitances. The data sheet specification for load regulation is measured at the bottom of the package. In order to ensure the best possible thermal flow from this area of the package to the heat sink proper mounting is required.

It is important to keep the positive lead between regulator and load as short as possible and use large wire or PC board traces. The load line for such a load may intersect two points on the output current curve.

AMSCD даташит – 3A Dropout Voltage Regulator – AMS – Datasheetcom

Junction-to-case thermal resistance is specified from the IC junction to the bottom of the case directly below the die. Ame1085 this case, there are two stable output operating points for the regulator. With this double intersection, the power supply may need to be cycled down to zero and brought up again to make the output recover.

A diode from output to input is recommended, when a crowbar circuit at the input of the Datashert is used. LTFixed – 3A, 5A, 7. However maximum junction temperature ratings should not be exceeded under continuous normal load conditions.

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The resistance of the wire connecting the regulator to the load will limit the load regulation. When the adjustment terminal is bypassed to improve the ripple rejection, the requirement for an output capacitor increases. General Description This guide. 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.

The data sheet specification for load regulation is measured at the bottom of the package. Minimum load current is defined as the minimum output current required to maintain regulation. Calculations for both temperatures under certain am1085 of ambient temperature and heat sink resistance and to ensure that both thermal limits are met.

For guaranteed specifications and test conditions, see the Electrical Characteristics. 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 asm1085 permit the output voltage to recover.

However maximum junction temperature ratings should not be exceeded under continuous normal load conditions. In normal operations it is difficult to get those values of surge currents even with the use of large output capacitances. At 10kHz only 0. When the adjustment terminal is bypassed to improve the ripple rejection, the requirement for an output capacitor increases. To ensure safe operating temperatures and reflect more accurately the device temperature, new thermal resistance specifications have been developed.

Ripple Rejection The ripple rejection values are measured with the adjustment pin bypassed. In this case, there are two stable output operating points for the regulator. To further improve stability and transient response of these devices larger values of output capacitor can be used. During the start-up, as the input voltage is rising, the input-to-output voltage differential remains small, allowing the regulator to supply large output currents.

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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 be considered.

When the adjustment terminal is bypassed to improve the ripple rejection, the requirement for an output capacitor increases.

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 data sheet specification for load regulation is measured at the bottom of the package. F solid tantalum on the output will ensure stability for all operating conditions.

High Efficiency Linear Regulators? I would invite AMA to send me. Advanced Monolithic Systems, Inc. Careful consideration must be given to all sources of thermal resistance from junction to ambient, including junction-to-case, case-to-heat sink interface and heat sink resistance itself. During the start-up, as the input voltage is rising, the input-to-output voltage differential remains small, allowing the regulator to supply large output currents. Without bypassing the adjustment terminal smaller capacitors can be used with equally good results.

To further improve stability and transient response of these devices larger values of output capacitor can be used. Pin compatible with older three terminal adjustable regulators, these devices offer the advantage of a lower dropout voltage, more precise reference tolerance and improved reference stability with temperature.

AMS Datasheet(PDF) – Advanced Monolithic Systems Ltd

F aluminum covers all cases of bypassing the adjustment terminal. The guaranteed specifications apply only for the test conditions listed. Post Regulators for Switching Supplies? Pin compatible with older three terminal adjustable regulators, these devices dataeheet the advantage of a lower dropout voltage, more precise reference tolerance and improved reference stability with temperature.

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.