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LP2983IM5-1.2 Datasheet(PDF) 10 Page - Texas Instruments |
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LP2983IM5-1.2 Datasheet(HTML) 10 Page - Texas Instruments |
10 / 25 page 10 LP2983 SNVS170D – OCTOBER 2001 – REVISED APRIL 2016 www.ti.com Product Folder Links: LP2983 Submit Documentation Feedback Copyright © 2001–2016, Texas Instruments Incorporated 7 Detailed Description 7.1 Overview The LP2983 is a voltage regulator with optimized vertically integrated PNP designed for use with very low ESR output capacitors, excellent for low noise applications that require a clean voltage supply. The LP2983 has a wide input voltage range (16 V maximum), high accuracy (A grade 1%), and a fixed output voltage supply capable of delivering 150 mA. In addition the LP2983 device provides the following features: • High accuracy output voltage • Low ground current, typically 825 μA at 150-mA load and 75 μA at 1-mA load • A sleep mode feature is available, allowing the regulator to consume only 1 µA (typical) when the ON/OFF pin is pulled low. • Overtemperature protection and overcurrent protection circuitry designed to safeguard the device during unexpected conditions. • Thermal protection 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 High-Accuracy Output Voltage With special careful design to minimize all contributions to the output voltage error, the LP2983 distinguishes itself as a very high-accuracy output voltage micropower LDO. This includes a tight initial tolerance (typically 1.5% at 50 mA, 25°C junction temperature; also available in A grade with an accuracy of 1% under the same conditions), extremely good line regulation (0.01%/V typical), and a very low output-voltage temperature coefficient, making the part an ideal low-power voltage reference. 7.3.2 Low Ground Current The LP2983 device uses a vertical PNP process which allows for quiescent currents that are considerably lower than those associated with traditional lateral PNP regulators, typically 825 μA at 150-mA load and 75 μA at 1-mA load. |
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