LM323 Three-terminal 3 A adjustable voltage regulators Datasheet - production data Description The LM323 are three-terminal positive voltage regulators with a preset 5 V output and a load driving capability of 3 A. New circuit design and processing techniques are used to provide the high output current without sacrificing the regulation characteristics of lower current devices. TO-220 Features * Output current: 3 A * Internal current and thermal limiting The 3 A regulator is virtually blowout proof. Current limiting, power limiting and thermal shutdown provide high level of reliability. An overall worst case specification for the combined effects of input voltage, load current, ambient temperature, and power dissipation ensure that the LM323 will perform satisfactorily as a system element. * Typical output impedance: 0.01 Table 1. Device summary * Minimum input voltage: 7.5 V TO-220 Temperature range * Power dissipation: 30 W LM323T 0C to 125C April 2014 This is information on a product in full production. DocID2165 Rev 5 1/16 www.st.com Contents LM323 Contents 1 Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 Typical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Typical application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 7 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 8 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 2/16 DocID2165 Rev 5 LM323 1 Diagram Diagram Figure 1. Schematic diagram DocID2165 Rev 5 3/16 16 Pin configuration 2 LM323 Pin configuration Figure 2. Pin connections (tot view) TO-220 4/16 DocID2165 Rev 5 LM323 3 Maximum ratings Maximum ratings Table 2. Absolute maximum ratings Symbol Parameter Value Unit 20 V VI Input voltage IO Output current Internally limited PD Power dissipation Internally limited TSTG Storage temperature range TOP Operating junction temperature range Note: -65 to 150 C 0 to 125 C Absolute maximum ratings are those values beyond which damage to the device may occur. Functional operation under these condition is not implied Table 3. Thermal data Symbol Parameter Value Unit RthJC Thermal resistance junction-case 3 C/W RthJA Thermal resistance junction-ambient 50 C/W DocID2165 Rev 5 5/16 16 Electrical characteristics 4 LM323 Electrical characteristics Table 4. Electrical characteristics (TJ = 0 to 125 C, unless otherwise specified (1)) Symbol Parameter Test conditions Min. Typ. Max. Unit 5 5.2 V 5.25 V VO Output voltage range TJ = 25C, VI = 7.5 V, IO = 0 4.8 VO Output voltage range TJ = Tmin to Tmax, P Pmax VI = 7.5 to 15 V, IO = 0 to 3 A 4.75 KVI Line regulation (2) VI = 7.5 to 15 V, TJ = 25C 5 25 mV IO = 0 to 3 A, VI = 7.5 V, TJ = 25C 25 100 mV Quiescent current VI = 7.5 to 15 V, IO = 0 to 3 A 12 20 mA VNO Output noise voltage TJ = 25C, f = 10 Hz to 100 kHz 40 4.5 Short circuit current limit VI = 15 V, TJ = 25C 3 IOS VI = 7.5 V, TJ = 25C 4 5 KVH Long term stability KVO IIB Load regulation (2) VRMS A 35 mV 1. Although power dissipation is internally limited, specifications apply only for P 30 W. 2. Load and line regulation are specified at constant junction temperature. Pulse testing is required with a pulse width 1 ms and duty cycle 5 %. 6/16 DocID2165 Rev 5 LM323 5 Typical characteristics Typical characteristics Figure 3. Output noise voltage Figure 4. Output impedance Figure 5. Peak available output current Figure 6. Short circuit current DocID2165 Rev 5 7/16 16 Typical characteristics 8/16 LM323 Figure 7. Ripple rejection Figure 8. Dropout voltage Figure 9. Line transient response Figure 10. Output voltage Figure 11. Quiescent current Figure 12. Load transient response DocID2165 Rev 5 LM323 6 Typical application Typical application Figure 13. Basic 3 A regulator C1 = Required if regulator is distant from filter capacitors. CL = Regulator is stable with no load capacitor into resistive loads. Figure 14. Trimming output to 5 V DocID2165 Rev 5 9/16 16 Typical application LM323 Figure 15. 10 A regulator with complete overload protection * Selected for 20 mA current from unregulated negative supply. ** Solid tantalum. A = LM201A, LM301A. 10/16 DocID2165 Rev 5 LM323 Typical application Figure 16. Adjustable regulator 0 - 10 V / 3 A A1 = LM201A, LM301A. CI = 2 F optional - improves ripple rejection, noise and transient response. DocID2165 Rev 5 11/16 16 Package mechanical data 7 LM323 Package mechanical data In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK(R) packages, depending on their level of environmental compliance. ECOPACK(R) specifications, grade definitions and product status are available at: www.st.com. ECOPACK(R) is an ST trademark. 12/16 DocID2165 Rev 5 LM323 Package mechanical data Figure 17. TO-220 drawing BW\SH$B5HYB7 DocID2165 Rev 5 13/16 16 Package mechanical data LM323 Table 5. TO-220 mechanical data mm Dim. Min. Typ. A 4.40 4.60 b 0.61 0.88 b1 1.14 1.70 c 0.48 0.70 D 15.25 15.75 D1 14/16 Max. 1.27 E 10 10.40 e 2.40 2.70 e1 4.95 5.15 F 1.23 1.32 H1 6.20 6.60 J1 2.40 2.72 L 13 14 L1 3.50 3.93 L20 16.40 L30 28.90 P 3.75 3.85 Q 2.65 2.95 DocID2165 Rev 5 LM323 8 Revision history Revision history Table 6. Document revision history Date Revision 04-Nov-2005 3 Updated curves, no content change. 12-Feb-2008 4 Added: Table 1 on page 1. 5 Removed TO-3 package. Updated Section 2: Pin configuration, Section 3: Maximum ratings, Section 6: Typical application and Section 7: Package mechanical data. Minor text changes. 09-Apr-2014 Changes DocID2165 Rev 5 15/16 16 LM323 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ("ST") reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST's terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST'S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. ST PRODUCTS ARE NOT DESIGNED OR AUTHORIZED FOR USE IN: (A) SAFETY CRITICAL APPLICATIONS SUCH AS LIFE SUPPORTING, ACTIVE IMPLANTED DEVICES OR SYSTEMS WITH PRODUCT FUNCTIONAL SAFETY REQUIREMENTS; (B) AERONAUTIC APPLICATIONS; (C) AUTOMOTIVE APPLICATIONS OR ENVIRONMENTS, AND/OR (D) AEROSPACE APPLICATIONS OR ENVIRONMENTS. WHERE ST PRODUCTS ARE NOT DESIGNED FOR SUCH USE, THE PURCHASER SHALL USE PRODUCTS AT PURCHASER'S SOLE RISK, EVEN IF ST HAS BEEN INFORMED IN WRITING OF SUCH USAGE, UNLESS A PRODUCT IS EXPRESSLY DESIGNATED BY ST AS BEING INTENDED FOR "AUTOMOTIVE, AUTOMOTIVE SAFETY OR MEDICAL" INDUSTRY DOMAINS ACCORDING TO ST PRODUCT DESIGN SPECIFICATIONS. PRODUCTS FORMALLY ESCC, QML OR JAN QUALIFIED ARE DEEMED SUITABLE FOR USE IN AEROSPACE BY THE CORRESPONDING GOVERNMENTAL AGENCY. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners. (c) 2014 STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America www.st.com 16/16 DocID2165 Rev 5