preliminary data this is preliminary information on a new product now in deve lopment or undergoing evaluation. details are subject to change without notice. december 2007 rev 1 1/10 10 PD85025C rf power transistor - ldmost family features excellent thermal stability common source configuration p out = 25 w with 16 db gain @ 945 mhz / 13.6 v beo free package esd protection in compliance with the 2002/95/ec european directive description the PD85025C is a common source n-channel, enhancement-mode lateral field- effect rf power transistor. it is designed for high gain, broadband commercial and industrial applications. it operates at 13.6 v in common source mode at frequencies of up to 1 ghz. PD85025C boasts the excellent gain, linearity and reliability of st?s la test ldmos technology. PD85025C?s superior linearity performance makes it an ideal soluti on for mobile application. figure 1. pin connection m243 epoxy sealed 1. drain 2. gate 3. source 1 3 2 table 1. device summary order code package packing PD85025C m243 box www.st.com
contents PD85025C 2/10 contents 1 electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.1 maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.1 static . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.2 dynamic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.3 esd protection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 5 package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 6 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PD85025C electrical data 3/10 1 electrical data 1.1 maximum ratings 1.2 thermal data table 2. absolute maximum ratings (t case = 25c) symbol parameter value unit v (br)dss drain-source voltage 40 v v gs gate-source voltage 20 v i d drain current 7 a p diss power dissipation (@ t c = 70 c) 93 w t j max. operating junction temperature 200 c t stg storage temperature -65 to +150 c table 3. thermal data symbol parameter value unit r thjc junction - case thermal resistance 1.4 c/w
electrical characteristics PD85025C 4/10 2 electrical characteristics t case = +25 o c 2.1 static 2.2 dynamic 2.3 esd protection characteristics table 4. static symbol test conditions min typ max unit i dss v gs = 0 v v ds = 25 v 1 a i gss v gs = 20 v v ds = 0 v 1 a v gs(q) v ds = 10 v i d = tbd ma tbd v v ds(on) v gs = 10 v i d = 1 a 270 310 mv c iss v gs = 0 v v ds = 12.5 v f = 1 mhz 49 pf c oss v gs = 0 v v ds = 12.5 v f = 1 mhz 35 pf c rss v gs = 0 v v ds = 12.5 v f = 1 mhz 1.0 pf table 5. dynamic symbol test conditions min. typ. max. unit p3db v dd = 13.6 v, i dq = 300 ma f = 945 mhz 25 30 w g p v dd = 13.6 v , i dq = 300 ma, p out = 10 w, f = 945 mhz 15 17.5 db h d v dd = 13.6 v, i dq = 300 ma, p out = p3db, f = 945 mhz 60 73 % load mismatch v dd = 17 v, i dq = 300 ma, p out = 45 w, f = 945 mhz all phase angles 20:1 vswr table 6. esd protection characteristics test conditions class human body model 2 machine model m3
PD85025C impedance 5/10 3 impedance figure 2. current conventions table 7. impedance data freq. (mhz) z in ( ? )z dl ( ? ) 945 mhz 1.01 + j 2.03 1.75 + j 2.20
typical performance PD85025C 6/10 4 typical performance figure 3. capacitances vs drain voltage figure 4. dc output characteristics figure 5. dc output characteristics figure 6. dc output characteristic 0 20 40 60 80 100 120 0 1020304050 vds (v) capacitance (pf) crss coss ciss freq = 1 mhz p 0 1 2 3 4 5 6 024681012 vds[v] id[a] vgs = 4.0v vg s = 4 .5v vgs = 5.0 v vgs = 5.5v vgs = 6.0v tamb = - 40 c 0 1 2 3 4 5 6 024681012 vds[v] id[a] vgs = 4.0v vgs = 4.5v vgs = 5.0v vgs = 5.5v vgs = 6.0v tamb = + 20 c 0 1 2 3 4 5 6 024681012 vds[v] id[a] vgs = 4.0v vg s = 4 .5 v vgs = 5.0v vgs = 5.5v vg s = 6 .0 v tamb = + 60 c
PD85025C typical performance 7/10 figure 7. output power and efficiency vs input power figure 8. gain vs output power and bias current figure 9. pout and drain current vs gate voltage figure 10. pout and drain current vs supply voltage figure 11. pout and drain current vs supply voltage 0 5 10 15 20 25 30 35 40 0.0 0.5 1.0 1.5 2.0 pin (w) pout (w) 0 10 20 30 40 50 60 70 80 nd (%) pout efficiency freq = 945 mhz vdd = 13.6v idq = 300 ma 10 12 14 16 18 20 22 0 5 10 15 20 25 30 35 40 pout (w) gain (db) 100ma 300ma 200ma 400ma freq = 945 mhz vdd = 13.6v 0 5 10 15 20 25 30 35 0123456 vgs (v) pout (w) 0 0.5 1 1.5 2 2.5 3 3.5 id (a) pout id freq = 945 mhz pin = 0.4w vdd = 13.6v idq = 300ma 0 5 10 15 20 25 30 35 40 710131619 vdd (v) pout (w) 0 0.5 1 1.5 2 2.5 3 3.5 4 id (a) pout id freq = 945 mhz pin = 0.8w idq = 300ma 0 5 10 15 20 25 30 35 40 45 50 710131619 vdd (v) pout (w) 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 id (a) pout id freq = 945 mhz pin = 1.6w idq = 300ma
package mechanical data PD85025C 8/10 5 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 figure 12. package dimensions table 8. m243 (.230 x .360 2l n/herm w/flg) mechanical data dim. mm. inch min typ max min typ max a 5.21 5.72 0.205 0.225 b 5.46 6.48 0.215 0.255 c 5.59 6.10 0.220 0.240 d 14.27 0.562 e 20.07 20.57 0.790 0.810 f 8.89 9.40 0.350 0.370 g 0.10 0.15 0.004 0.006 h 3.18 4.45 0.125 0.175 i 1.83 2.24 0.072 0.088 j 1.27 1.78 0.050 0.070 controlling dimension: inches 1022142e
PD85025C revision history 9/10 6 revision history table 9. document revision history date revision changes 10-dec-2007 1 initial release.
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