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LM138 数据表(PDF) 1 Page - Linear Technology |
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LM138 数据表(HTML) 1 Page - Linear Technology |
1 / 12 page 1 LT138A/LT338A LM138/LM338 5A Positive Adjustable Voltage Regulator s Guaranteed 1% Initial Tolerance s Guaranteed 0.3% Load Regulation s Guaranteed 5A Output Current s 100% Thermal Limit Burn-In s 12A Transient Output Current The LT ®138A series of adjustable regulators provide 5A output current over an output voltage range of 1.2V to 32V. The internal voltage reference is trimmed to less than 1%, enabling a very tight output voltage. In addition to excel- lent line and load regulation, with full overload protection, the LT138A incorporates new current limiting circuitry allowing large transient load currents to be handled for short periods. Transient load currents of up to 12A can be supplied without limiting, eliminating the need for a large output capacitor. The LT138A is an improved version of the popular LM138 with improved circuit design and advanced process tech- niques to provide superior performance and reliability. The graph below shows the significant improvement in output voltage tolerance achieved by using the LT138A or LT338A. s High Power Linear Regulator s Battery Chargers s Power Driver s Constant-Current Regulator , LTC and LT are registered trademarks of Linear Technology Corporation. Parallel Regulators for Higher Current* LT338A 0.01 Ω** VIN VIN THIS CIRCUIT WILL NOT WORK WITH LM VERSION DEVICES CURRENT SHARING RESISTORS DEGRADE REGULATION TO 1% * ** VOUT ADJ LT350A VIN 138/338 TA01 121 Ω 1% 5V 8A VOUT ADJ 0.016 Ω** 365 Ω 1% Output Voltage Error OUTPUT VOLTAGE (V) 1 0 3 5 7 10 10 100 138A/338A TA02 1 4 6 9 12 11 8 2 2% RESISTORS 2% RESISTORS 1% RESISTORS 1% RESISTORS LM338 LM338 LT338A LT338A DESCRIPTIO FEATURES APPLICATIO S TYPICAL APPLICATIO |
类似零件编号 - LM138 |
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类似说明 - LM138 |
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