march 2006 rev 2 1/10 10 order codes part number marking package packing STD790AT4 d790a dpak tape & reel STD790AT4 medium current, high performance, low voltage pnp transistor general features very low collector to emitter saturation voltage d.c. current gain, h fe >100 3a continuous collector current 40v breakdown voltage (v (br)cer ) surgace mounting dpak(to-252) power package in tape & reel packing in compliance with the 2002/93/ec european directive description the device in manufactured in low voltage pnp planar technology by using a ?base island? layout. the resulting transistor shows exceptional high gain performance coupled with very low saturation voltage. applications power management in portable equipment voltage regulation in bias supply circuits switching regulator in battery charger applications heavy load driver internal schematic diagram dpak (to-252) 1 3 www.st.com
STD790AT4 2/10 contents 1 electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 electrical characteristics (curves) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2.2 test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
STD790AT4 electrical ratings 3/10 1 electrical ratings table 2. thermal data table 1. absolute maximum rating symbol parameter value unit v cbo collector-base voltage (i e = 0) -40 v v cer collector-emitter voltage (r be = 47 ?) -40 v v ceo collector-emitter voltage (i b = 0) -30 v v ebo emitter-base voltage (i c = 0) -5 v i c collector current -3 a i cm collector peak current (t p < 5ms) -6 a p tot total dissipation at t c = 25c 15 w t stg storage temperature -65 to 150 c t j max. operating junction temperature 150 c symbol parameter value unit r thj-case thermal resistance junction-case __ max 8.33 c/w
electrical characteristics STD790AT4 4/10 2 electrical characteristics (t case = 25c unless otherwise specified) table 3. electrical characteristics symbol parameter test conditions min. typ. max. unit i cbo collector cut-off current (i e =0) v cb = -30v v cb = -30v; t c = 100c -10 100 a a i ebo emitter cut-off current (i c =0) v eb = -4v -10 a v (br)ceo (2) collector-emitter breakdown voltage (i b =0) i c = -10ma -30 v v (br)cer (2) collector-emitter breakdown voltage (r be = 47 ?) i c = -10ma -40 v v (br)cbo collector-base breakdown voltage (i e =0) i c = -100 a -40 v v (br)ebo emitter-base breakdown voltage (i c =0) i e = -100 a -5 v v ce(sat) (2) collector-emitter saturation voltage i c = -0.5a i b = -5ma i c = -1.2a i b = -20ma i c = -2a i b = -20ma i c = -3a i b = -100ma i c = -3a i b = -100ma t j = 100c -0.15 -0.25 -0.5 -0.7 -0.9 v v v v v v be(sat) (2) base-emitter saturation voltage i c = -1a i b = -10ma -0.8 -1 v v be(on) (2) base-emitter on voltage i c = -1a v ce = -2v -0.8 -1 v h fe (2) dc current gain i c = -10ma v ce = -2v i c = -500ma v ce = -2v i c = -1a v ce = -2v i c = -2a v ce = -1v i c = -3a v ce = -1v 100 100 100 100 90 200 200 160 130 400 400
STD790AT4 electrical characteristics 5/10 note (2) pulsed duration = 300 s, duty cycle 1.5% 2.1 electrical characteristics (curves) f t transition frequency i c = -50ma v ce = -5v f = 50mhz 100 mhz t d t r t s t f resistive load delay time rise time storage time fall time i c = -3a v cc = -20v i b1 = - i b2 = -60ma (see figure 7) 180 160 250 80 220 210 300 100 ns ns ns ns table 3. electrical characteristics symbol parameter test conditions min. typ. max. unit figure 1. dc current gain figure 2. dc current gain figure 3. collector-emitter saturation voltage figure 4. base-emitter saturation voltage
electrical characteristics STD790AT4 6/10 2.2 test circuits figure 7. resistive load switching test circuit figure 5. switching time resistive load figure 6. switching time resistive load 1) fast electronic switch 2) non-inductive resistor
STD790AT4 package mechanical data 7/10 3 package mechanical data in order to meet environmental requirements, st offers these devices in ecopack? packages. these packages have a lead-free second level interconnect. the category of second level interconnect is marked on the package and on the inner box label, in compliance with jedec standard jesd97. the maximum ratings related to soldering conditions are also marked on the inner box label. ecopack is an st trademark. ecopack specifications are available at: www.st.com
package mechanical data STD790AT4 8/10 dim. mm inch min. typ. max. min. typ. max. a 2.20 2.40 0.087 0.094 a1 0.90 1.10 0.035 0.043 a2 0.03 0.23 0.001 0.009 b 0.64 0.90 0.025 0.035 b2 5.20 5.40 0.204 0.213 c 0.45 0.60 0.018 0.024 c2 0.48 0.60 0.019 0.024 d 6.00 6.20 0.236 0.244 e 6.40 6.60 0.252 0.260 g 4.40 4.60 0.173 0.181 h 9.35 10.10 0.368 0.398 l2 0.8 0.031 l4 0.60 1.00 0.024 0.039 v2 0 o 8 o 0 o 0 o p032p_b to-252 (dpak) mechanical data
STD790AT4 revision history 9/10 4 revision history table 4. revision history date revision changes 24-mar-2004 1 initial release. 27-mar-2006 2 new template, new graphics
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