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LM3411M5-5.0 Datasheet(PDF) 1 Page - Texas Instruments |
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LM3411M5-5.0 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 32 page Copyright © 2016, Texas Instruments Incorporated Copyright © 2016, Texas Instruments Incorporated Product Folder Sample & Buy Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. LM3411 SNVS113F – DECEMBER 1999 – REVISED MAY 2016 LM3411 Precision Secondary Regulator and Driver 1 1 Features 1 • Fixed Voltages of 3.3 V and 5 V With Initial Tolerance of ±1% for Standard Grade and ±0.5% for A Grade • Custom Voltages Available (3 V to 17 V) • Wide Output Current Range (20 μA to 15 mA) • Low Temperature Coefficient • Available in 5-Pin SOT-23 Surface-Mount Package (Tape and Reel) 2 Applications • Secondary Controller for Isolated DC-DC PWM Switching Regulators Systems • Use With LDO Regulator for High-Precision, Fixed-Output Regulators • Precision Monitoring Applications • Use With Many Types of Regulators to Increase Precision and Improve Performance 3 Description The LM3411 is a low-power fixed-voltage (3.3 V or 5 V) precision shunt regulator designed specifically for driving an optoisolator to provide feedback isolation in a switching regulator. The LM3411 circuitry includes an internally compensated operational amplifier, a bandgap reference, NPN output transistor, and voltage setting resistors. A trimmed precision bandgap reference with temperature drift curvature correction provides a ensured 1% precision over the operating temperature range (A grade version). The inverting input of the amplifier is externally accessible for loop frequency compensation when used as part of a larger servo system. The output is an open-emitter NPN transistor capable of driving up to 15 mA of load current. Because of its small die size, the LM3411 has been made available in the subminiature 5-pin SOT-23 surface-mount package. This package is ideal for use in space-critical applications. Although its main application is to provide a precision output voltage (no trimming required) and maintain very good regulation in isolated DC-DC converters, it can also be used with other types of voltage regulators or power semiconductors to provide a precision output voltage without precision resistors or trimming. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) LM3411 SOT-23 (5) 2.90 mm × 1.60 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Typical Application Schematic LM3411 Functional Diagram |
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