LM338T National Semiconductor, LM338T Datasheet
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LM338T
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LM338T Summary of contents
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... Adjustable output down to 1.2V n Guaranteed thermal regulation n Current limit constant with temperature + n P Product Enhancement tested n Output is short-circuit protected Applications n Adjustable power supplies n Constant current regulators n Battery chargers (TO-220) Plastic Package DS009060-31 Front View Order Number LM338T See NS Package Number T03B May 1998 www.national.com ...
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... Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. (Note 4) Power Dissipation Input/Output Voltage Differential Storage Temperature Electrical Characteristics Specifications with standard type face are for T ture Range. Unless otherwise specified, V ...
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Electrical Characteristics Symbol Parameter V Temperature Stability R/T I (Min) Minimum Load Current LOAD I Current Limit CL V RMS Output Noise OUT Ripple Rejection Ratio Long-Term Stability Thermal Resistance JC Junction to Case Thermal Resistance, ...
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Typical Performance Characteristics Temperature Stability DS009060-38 Ripple Rejection DS009060-41 Line Transient Response DS009060-44 Application Hints In operation, the LM138 develops a nominal 1.25V reference voltage between the output and adjustment terminal. REF The reference voltage is impressed across ...
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Application Hints (Continued) DS009060-6 FIGURE 1. Since the 50 µA current from the adjustment terminal repre- sents an error term, the LM138 was designed to minimize I and make it very constant with line and load changes. ADJ To do ...
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Application Hints (Continued) D1 protects against C1 D2 protects against C2 www.national.com DS009060-8 FIGURE 3. Regulator with Protection Diodes 6 ...
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Typical Applications Regulator and Voltage Reference DS009060-3 1.2V–25V Adjustable Regulator Temperature Controller Full output current not available at high input-output voltages † Optional — improves transient response. Output capacitors in the range of 1 µF to 1000 µF of aluminum ...
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Schematic Diagram www.national.com 8 ...
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Typical Applications Precision Power Regulator with Low Temperature Coefficient * Adjust for 3.75 across R1 Slow Turn-On 15V Regulator High Stability 10V Regulator Adjustable Regulator with Improved Ripple Rejection DS009060-13 † Solid tantalum * Discharges C1 if output is shorted ...
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Typical Applications (Continued) * Minimum load — 100 mA 5V Logic Regulator with Electronic Shutdown ** Minimum output 1.2V www.national.com 15A Regulator ** Light Controller DS009060-18 10 DS009060-17 DS009060-11 ...
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Typical Applications (Continued 240 , for LM138 Full output current not available at high input-output voltages 0 to 22V Regulator DS009060-19 12V Battery Charger 11 DS009060-20 www.national.com ...
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Typical Applications (Continued) Adjustable Current Regulator 5A Current Regulator DS009060-23 Adjusting Multiple On-Card Regulators with Single Control † Minimum load — ± * All outputs within 100 mV www.national.com Precision Current Limiter DS009060-21 Tracking Preregulator 12 DS009060-22 DS009060-24 ...
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Typical Applications (Continued 10k 100 10 100k Bandwidth 100 kHz Distortion 0.1% Use of R allows low charging ...
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Typical Applications (Continued) Adjustable 15A Regulator * Minimum load — 100 mA www.national.com Current Limited 6V Charger * Set max charge current THE 1000 µF is recommended to filter out input transients. DS009060-26 10A Regulator 14 ...
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... Physical Dimensions inches (millimeters) unless otherwise noted Order Number LM138K or LM338K STEEL 2 Lead TO-3 Metal Can Package (K) NS Package Number K02A 3 Lead Molded TO-220 (T) Order Number LM338T NS Package Number T03B 15 www.national.com ...
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... National Semiconductor Asia Pacific Customer Fax: +49 (0) 1 80-530 85 86 Response Group Email: europe.support@nsc.com Tel: 65-2544466 Fax: 65-2504466 Tel: +49 (0) 1 80-532 78 32 Email: sea.support@nsc.com Tel: +49 (0) 1 80-534 16 80 National Semiconductor Japan Ltd. Tel: 81-3-5639-7560 Fax: 81-3-5639-7507 ...