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LINEAR TECHNOLOGY LT3976EUDD#PBF DC-DC Switching Buck (Step Down) Regulator, Adjustable, 4.3V-40Vin, 1.2V-39.2Vout, 5Aout, QFN-24

LINEAR TECHNOLOGY - LT3990HMSE#PBF - BUCK, 62VIN, 2.2MHZ, 0.35A, ADJ, 16MSOP
LT3973 - 42V, 750mA Step-Down Regulator with 2.5µA Quiescent Current and Integrated Diodes

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LINEAR TECHNOLOGY - LT3973EMSE-5#PBF - Régulateur à découpage Buck (Step Down), Fixe, 4.2V-42V In, 5V et 750mA Out, MSOP-10

Step Down DC-DC Controller, 4-60V In, 1.21-25V Out, 0.35A, 10-Pin DFN EP