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NDS9956A Datasheet(PDF) 3 Page - Fairchild Semiconductor |
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NDS9956A Datasheet(HTML) 3 Page - Fairchild Semiconductor |
3 / 10 page Electrical Characteristics (T A = 25°C unless otherwise noted) Symbol Parameter Conditions Min Typ Max Units DRAIN-SOURCE DIODE CHARACTERISTICS AND MAXIMUM RATINGS I S Maximum Continuous Drain-Source Diode Forward Current 1.2 A V SD Drain-Source Diode Forward Voltage V GS = 0 V, IS = 1.25 A (Note 2) 0.8 1.3 V t rr Reverse Recovery Time V GS = 0 V, IF = 1.25 A, dIF/dt = 100 A/µs 100 ns Notes: 1. RθJA is the sum of the junction-to-case and case-to-ambient thermal resistance where the case thermal reference is defined as the solder mounting surface of the drain pins. RθJC is guaranteed by design while RθCA is determined by the user's board design. PD (t) = TJ−TA R θJ A(t) = TJ−TA RθJ C+RθCA(t) = I D 2 (t) × R DS (ON ) TJ Typical R θJA for single device operation using the board layouts shown below on 4.5"x5" FR-4 PCB in a still air environment: a. 78oC/W when mounted on a 0.5 in2 pad of 2oz cpper. b. 125oC/W when mounted on a 0.02 in2 pad of 2oz cpper. c. 135oC/W when mounted on a 0.003 in2 pad of 2oz cpper. Scale 1 : 1 on letter size paper 2. Pulse Test: Pulse Width < 300µs, Duty Cycle < 2.0%. NDS9956A.SAM 1a 1b 1c |
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