February 2011 Doc ID 14228 Rev 3 1/14
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PD84008L-E
RF power transistor, LdmoST plastic family
N-channel enhancement-mode lateral MOSFETs
Features
■Excellent thermal stability
■Common source configuration
■POUT = 8 W with 13 dB gain @ 870 MHz / 7.5 V
■Plastic package
■ESD protection
■In compliance with the 2002/95/EC european
directive
Description
The PD84008L-E 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 7.5 V in common source mode at
frequencies of up to 1 GHz. PD84008L-E boasts
the excellent gain, linearity and reliability of ST’s
latest LDMOS technology mounted in leadless
SMD plastic RF power package, PowerFLAT™.
Figure 1. Pin connection
PowerFLATTM (5 mm x 5 mm)
Table 1. Device summary
Order code Marking Package Packing
PD84008L-E 84008 PowerFLATTM Tape and reel
www.st.com
Contents PD84008L-E
2/14 Doc ID 14228 Rev 3
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
2.4 Moisture sensitivity level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Typical performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
PD84008L-E Electrical data
Doc ID 14228 Rev 3 3/14
1 Electrical data
1.1 Maximum ratings
1.2 Thermal data
Table 2. Absolute maximum ratings (TCASE = 25°C)
Symbol Parameter Value Unit
V(BR)DSS Drain-source voltage 25 V
VGS Gate-source voltage -0.5 to +15 V
IDDrain current 7 A
PDISS Power dissipation (@ TC = 70 °C) 26.7 W
TJMax. operating junction temperature 150 °C
TSTG Storage temperature -65 to +150 °C
Table 3. Thermal data
Symbol Parameter Value Unit
RthJC Junction - case thermal resistance 3 °C/W
Electrical characteristics PD84008L-E
4/14 Doc ID 14228 Rev 3
2 Electrical characteristics
TCASE = +25 oC
2.1 Static
2.2 Dynamic
2.3 ESD protection characteristics
2.4 Moisture sensitivity level
Table 4. Static
Symbol Test conditions Min Typ Max Unit
IDSS VGS = 0 V VDS = 25 V 1 µA
IGSS VGS = 5 V VDS = 0 V 1 µA
VGS(Q) VDS = 10 V ID = 250mA 3.2 4.8 V
VDS(ON) VGS = 10 V ID = 1 A 0.27 0.31 V
CISS VGS = 0 V VDS = 7 V f = 1 MHz 57 pF
COSS VGS = 0 V VDS = 7 V f = 1 MHz 46 pF
CRSS VGS = 0 V VDS = 7 V f = 1 MHz 2 pF
Table 5. Dynamic
Symbol Test conditions Min Typ Max Unit
P3dB VDD = 7.5 V, IDQ = 250 mA f = 870 MHz 8 9 W
GPVDD = 7.5 V, IDQ = 250 mA, POUT = 2 W, f = 870 MHz 13 15.5 dB
hDVDD = 7.5 V, IDQ = 250 mA, POUT = P3dB, f = 870 MHz 50 57 %
Load
mismatch
VDD = 9.5 V, IDQ = 250 mA, POUT = 10 W, f = 870 MHz
All phase angles 20:1 VSWR
Table 6. ESD protection characteristics
Test conditions Class
Human body model 2
Machine model M3
Table 7. Moisture sensitivity level
Test methodology Rating
J-STD-020B MSL 3
PD84008L-E Impedance
Doc ID 14228 Rev 3 5/14
3 Impedance
Figure 2. Current conventions
Table 8. Impedance data
Freq. (MHz) ZIN (Ω)Z
DL(Ω)
870 MHz TBD TBD
Typical performance PD84008L-E
6/14 Doc ID 14228 Rev 3
4 Typical performance
Figure 3. Capacitances vs drain voltage
Figure 4. DC output characteristics Figure 5. DC output characteristics
0
20
40
60
80
100
120
01020304050
VDS (V)
Capacitances (pF)
Coss Crss Cis s
p
0
1
2
3
4
5
6
0510
VDS[V]
Vgs = 4. 0V Vgs = 4.5V
Vgs = 5. 0V Vgs = 5.5V
Vgs = 6. 0V
Tam b = - 40 ° C
ID[A]
0
1
2
3
4
5
6
0510
VDS[V]
Vgs = 4.0V Vgs = 4.5V
Vgs = 5.0V Vgs = 5.5V
Vgs = 6.0V
Tamb = + 20 °C
ID[A]
PD84008L-E Typical performance
Doc ID 14228 Rev 3 7/14
Figure 6. DC output characteristics Figure 7. Output power and drain current vs
gate voltage
Figure 8. Output power vs supply voltage
and input power
Figure 9. Gain and efficiency vs output
power
0
1
2
3
4
5
6
024681012
VDS[V]
Vgs = 4.0V Vgs = 4.5V
Vgs = 5.0V Vgs = 5.5V
Vgs = 6.0V
Tam b = + 60 °C
ID[A]
0
4
8
12
16
20
24
28
32
0123456
Vgs ( V )
Pout (W)
0
0.4
0.8
1.2
1.6
2
2.4
2.8
3.2
Id (A)
Pout Id
Freq = 870 MHz
Pin = 0.4W
I dq = 300mA
0
4
8
12
16
20
24
45678910111213
Vd d (V)
Pout (W)
P in = 32 dB m Pi n = 29 dB m
P in = 26 dB m Pi n = 23 dB m
Freq = 870 M Hz
Idq = 300 m A
ypp
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
024681012
Pout (W)
Gain (dB)
0
10
20
30
40
50
60
70
Eff (%)
PD84008L_GAIN
PD84008L_EFFICIENCY
Freq = 870 M Hz
V dd = 7.5V
Idq = 250 m A
Typical performance PD84008L-E
8/14 Doc ID 14228 Rev 3
Figure 10. Gain vs output power and bias
current
p
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
024681012
Pout (W)
Gain (dB)
Idq = 250 mA Idq =100 m A
Idq = 350 mA Idq = 500 m A
V dd = 7.5V
Freq = 870 MHz
PD84008L-E Package mechanical data
Doc ID 14228 Rev 3 9/14
5 Package mechanical data
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com. ECOPACK
is an ST trademark.
Package mechanical data PD84008L-E
10/14 Doc ID 14228 Rev 3
Figure 11. PowerFLAT™ (5x5) package dimensions
Table 9. PowerFLAT™ (5x5) mechanical data
Dim.
mm inch
Min Typ Max Min Typ Max
A 0.90 1.00 0.035 0.039
A1 0.02 0.05 0.001 0.002
A3 0.24 0.009
AA 0.15 0.25 0.35 0.006 0.01 0.014
b 0.43 0.51 0.58 0.017 0.020 0.023
c 0.64 0.71 0.79 0.025 0.028 0.031
D 5.00 0.197
d 0.30 0.011
E 5.00 0.197
E2 2.49 2.57 2.64 0.098 0.101 0.104
e 1.27 0.050
f 3.37 0.132
g0.74 0.03
h 0.21 0.008
PD84008L-E Package mechanical data
Doc ID 14228 Rev 3 11/14
Figure 12. Tape and reel dimensions
Table 10. Tape and reel dimensions
Dim.
Mm
Min Typ Max
Ao 5.15 5.25 5.35
Bo 5.15 5.25 5.35
Ko 1.0 1.1 1.2
Package mechanical data PD84008L-E
12/14 Doc ID 14228 Rev 3
Figure 13. PowerFLAT™ (5x5) recommended footprint
PD84008L-E
14/14 Doc ID 14228 Rev 3
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