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Fatasheet older regulators with a single junction-to-case thermal resistance specification, the data section for these new regulators provides a separate thermal resistance and maximum junction temperature for both the Control Section and the Power Transistor. At 10kHz only 0. However maximum junction temperature ratings should not be datasyeet under continuous normal load conditions.
Microsecond surge currents of 50A to A can be handled by the internal diode between the input and output pins of the device.
ams transistor datasheet & applicatoin notes – Datasheet Archive
Its output is inverted ajs1085 time the pressed. Datasheeh Allowable Power Dissipation W 2. Because IADJ is very small and constant it represents a small error and it can usually be ignored. F tantalum or ? Because IADJ is very small and constant it represents a small error and it can usually be ignored.
In this case, there are two stable output operating points for the regulator. Buy our products orRevision 1.
The size of the required adjust pin capacitor is a function of the input ripple frequency. Normal power supply cycling or even plugging and unplugging in the system will not generate current large enough to do any damage.
With its unparalleled flexibility, perhaps the greatest uses of AMS are those we have yet to imagine. F Overload Recovery When the power is first turned on, as the input voltage rises, the output follows the input, permitting the regulator to start up into heavy loads.
In normal operations it is difficult to get those values of surge currents even with the use of large output capacitances. Line and load regulation are measured at a constant junction temperature by low duty cycle pulse testing. The value of 22? Three Terminal Adjustable or Fixed Voltages 1. Thermal Considerations The AMS series have internal power and thermal limiting circuitry designed to protect the device under overload conditions.
Stability The circuit design used in the AMS series requires the use of an output capacitor as part of the device frequency compensation.
A diode from output to input is recommended, when a crowbar circuit at the input of the AMS is used. Microsecond surge currents of 50A to A can be handled by the internal diode between the input and output pins of the device.
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. Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Dropout voltage 1,2v Line Regulation typically at 0. Using gauge wire the parasitic line resistance is about 0. Connected as shown, RP is not multiplied by the divider ratio. Junction-to-case thermal resistance is specified from the IC junction to the bottom of the case directly below the die.
Minimum load current is defined as the minimum output current required to maintain regulation. To ensure good transient response with heavy load current changes capacitor values on the order of ? See thermal regulation specifications for changes in output voltage due to heating effects. Thermal compound at the case-to-heat sink interface is recommended. 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.
AMS Datasheet PDF –
However maximum junction temperature ratings should not be exceeded under continuous normal load conditions. In this case, there are two stable output operating points for the regulator. At 10kHz only 0. Internal resistors are limiting the internal current paths on the AMS adjustment pin, therefore even with capacitors on the adjustment pin no protection diode is needed to ensure device safety under short-circuit conditions.
Line and Load regulation are guaranteed up to the maximum power dissipation of 15W. For connector AMS B P, because it shell size is 18, theexceeds the sizes as shown in table. Unlike older regulators with a single junction-to-case thermal resistance specification, the data section for these new regulators provides a separate thermal resistance and maximum junction temperature for both the Control Section and the Power Transistor.
Current limit is also trimmed, minimizing dagasheet stress under overload conditions on both the regulator and power source circuitry. Line and Load regulation are guaranteed up to 15W power dissipation for M and T packages and 2.