lp2980-adjep National Semiconductor Corporation, lp2980-adjep Datasheet

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... LP2980-ADJEP Micropower SOT Ultra Low-Dropout Adjustable Voltage Regulator General Description The LP2980-ADJEP adjustable voltage regulator designed to provide ultra low dropout in battery powered ap- plications. Using an optimized VIP ® (vertically Integrated PNP) process, the LP2980-ADJEP delivers unequalled performance in all specifications critical to battery-powered designs: Adjustable Output: output voltage can be set from 1 ...

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Connection Diagram Block Diagram Basic Application Circuit *ON/OFF INPUT MUST BE ACTIVELY TERMINATED. TIE TO V **MINIMUM CAPACITANCE IS SHOWN TO ENSURE STABILITY OVER FULL LOAD CURRENT RANGE (SEE APPLICATION HINTS). www.national.com 5-Lead Small Outline Package (M5) 20207002 Top View ...

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... C OUT kHz = 10 μF C OUT (Steady State) L (Note 12) 3 Internally Limited −0.3V to +16V 2.5V to +16V −0.3V to +16V −0.3V to 16V Short Circuit Protected −0.3V to 16V = 2V. ON/OFF LP2980I-ADJEP (Note 9) Typ Units Min Max 1.225 1.213 1.237 1.225 1.206 1.243 1.182 1.268 3 6.0 15 ...

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... SOT-23 package is 300°C/W. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator J-A will go into thermal shutdown. Note 7: If used in a dual-supply system where the regulator load is returned to a negative supply, the LP2980-ADJEP output must be diode-clamped to ground. Note 8: The output PNP structure contains a diode between the V V will turn on this diode (see Application Hints) ...

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Ground Pin Current vs. Temperature 20207009 Input Current vs 20207011 Line Transient Response 20207013 Ground Pin Current vs. Load Current Load Transient Response Short Circuit Current 5 20207010 20207012 20207014 www.national.com ...

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Short Circuit Current ADJ Pin Bias Current vs. Load Current ON/OFF Threshold vs.Temperature www.national.com 20207015 ADJ Pin Bias Current vs. Temperature 20207017 Output Noise Density 20207019 6 Load Regulation 20207016 20207018 20207020 ...

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... A temperature-stable ceramic capacitor (type NPO or COG) should be used here. CAPACITOR CHARACTERISTICS TANTALUM: The best capacitor choice for the LP2980-AD- JEP output is solid Tantalum. The ESR of a good quality Tantalum is almost perfectly centered in the middle of the 20207022 “stable” range of the ESR curve (about 0.5Ω–1Ω). ...

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... ADJ ON/OFF INPUT OPERATION The LP2980-ADJEP is shut off by driving the ON/OFF input low, and turned on by pulling the ON/OFF input high. If this feature is not to be used, the ON/OFF input must be tied keep the regulator output on at all times (the ON/OFF IN input must not be left floating) ...

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Physical Dimensions inches (millimeters) unless otherwise noted 5-Lead Small Outline Package (M5) NS Package Number MF05A 9 www.national.com ...

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