NDS351N general description features ________________________________________________________________________________ absolute maximum ratings t a = 25c unless otherwise noted symbol parameter NDS351N units v dss drain-source voltage 30 v v gss gate-source voltage - continuous 20 v i d maximum drain current - continuous (note 1a) 1 .1 a - pulsed 10 p d maximum power dissipation (note 1a ) 0.5 w (note 1 b) 0.46 t j ,t stg operating and storage temperature range -55 to 150 c thermal characteristics r q ja thermal resistance, junction-to-ambient (note 1a) 250 c/w r q jc thermal resistance, junction-to-case (note 1) 75 c/w 1.1 a, 30v. ?r ds(on ) = 0.25 w @ v gs = 4.5v. proprietary package design using copper lead frame for superior thermal and electrical capabilities. high density cell design for extremely low r ds(on) . exceptional on-resistance and maximum dc current capability. compact industry standard sot-23 surface mount package. d s g these n -c hannel logic level enhancement mode power field effect transistors are produced using fairchild's proprietary, high cell density, dmos technology. this very high density process is especially tailored to minimize on-state resistance. these devices are particularly suited for low voltage applications in notebook computers, portable phones, pcmcia cards, and other battery powered circuits where fast switching, and low in-line power loss are needed in a very small outline surface mount package. smd type smd type smd type smd type smd type smd type smd type smd type smd type smd type product specification 4008-318-123 sales@twtysemi.com http://www.twtysemi.com 1 of 3
electrical characteristics (t a = 25c unless otherwise noted) symbol parameter conditions min typ max units off characteristics bv dss drain-source breakdown voltage v gs = 0 v, i d = 250 a 30 v i dss zero gate voltage drain current v ds = 24 v, v gs = 0 v 1 a t j =125c 10 a i gssf gate - body leakage, forward v gs = 12 v, v ds = 0 v 100 na i gssr gate - body leakage, reverse v gs = -12 v, v ds = 0 v -100 na on characteristics (note 2 ) v gs (th) gate threshold voltage v ds = v gs , i d = 250 a 0.8 1.6 2 v t j =125c 0.5 1.3 1.5 r ds(on) static drain-source on-resistance v gs = 4.5 v, i d = 1.1 a 0.185 0.25 w t j =125c 0.26 0.37 v gs = 10 v, i d = 1.4 a 0.135 0.16 i d(on) on-state drain current v gs = 4.5 v, v ds = 5 v 5 a g fs forward transconductance v ds = 5 v, i d = 1.1 a 2.5 s dynamic characteristics c iss input capacitance v ds = 10 v, v gs = 0 v, f = 1.0 mhz 140 pf c oss output capacitance 80 pf c rss reverse transfer capacitance 18 pf switching ch aracteristics (note 2 ) t d(on ) turn - on delay time v dd = 10 v, i d = 1 a, v gs = 10 v, r gen = 50 w 9 15 ns t r turn - on rise time 16 30 ns t d(off) turn - off delay time 26 50 ns t f turn - off fall time 19 40 ns q g total gate charge v ds = 10 v, i d = 1.1 a, v gs = 5 v 2 3.5 nc q gs gate-source charge 1 nc q gd gate-drain charge 2 nc NDS351N smd type smd type smd type smd type smd type smd type smd type smd type smd type smd type product specification 4008-318-123 sales@twtysemi.com http://www.twtysemi.com 2 of 3
electrical characteristics (t a = 25c 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 0.6 a i sm maximum pulsed drain-source diode forward current 5 a v sd drain-source diode forward voltage v gs = 0 v, i s = 1.1 a (note 2 ) 0.8 1.2 v notes: 1 . r q ja is the sum of the junction-to-case and case-to-ambient thermal resistance where the case thermal reference is defined as the so lder mounting surface of the drain pins. r q jc is guaranteed by design while r q ca is determined by the user's board design. p d ( t ) = t j - t a r q j a ( t ) = t j - t a r q j c + r q c a ( t ) = i d 2 ( t ) r d s ( o n ) t j typical r q ja using the board layouts shown below on 4.5"x5" fr-4 pcb in a still air environment : a. 250 o c/w when mounted on a 0.02 in 2 pad of 2oz cpper. b. 270 o c/w when mounted on a 0.001 in 2 pad of 2oz cpper. scale 1 : 1 on letter size paper 2. pulse test: pulse width < 300 s, duty cycle < 2.0%. 1a 1b NDS351N smd type smd type smd type smd type smd type smd type smd type smd type smd type smd type product specification 4008-318-123 sales@twtysemi.com http://www.twtysemi.com 3 of 3
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