PD85004
RF power transistor
the LdmoST plastic family
Features
■
■
■
■
■
■
■
Excellent thermal stability
Common source configuration
Broadband performances
P
OUT
= 4 W with 17 dB gain @ 870 MHz
Plastic package
ESD protection
Supplied in tape and reel
In compliance with the 2002/95/EC european
directive
Figure 1.
Pin connection
SOT-89
Description
The PD85004 is a common source N-channel,
enhancement-mode lateral
field-e
ffect RF power
transistor. It is designed for high gain, broad band
commercial and industrial applications. It
operates at 13.6 V in common source mode at
frequencies of up to 1 GHz.
PD85004’s superior gain and efficiency makes it
an ideal solution for mobile radio.
Source
Source
Gate
Drain
Table 1.
Device summary
Marking
8504
Package
SOT-89
Packaging
Tape and reel
Order code
PD85004
August 2008
Rev 2
1/18
www.st.com
18
Contents
PD85004
Contents
1
Electrical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.1
1.2
Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1
2.2
2.3
2.4
Static . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Dynamic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
ESD protection characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Moisture sensitivity level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3
4
5
6
7
8
Impedances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
DC curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
RF curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Schematic and BOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Demonstration board photo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
8.1
8.2
Thermal pad and via design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Soldering profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
9
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
2/18
PD85004
Electrical data
1
1.1
Electrical data
Maximum ratings
Table 2.
Symbol
V
(BR)DSS
V
GS
I
D
P
DISS
T
J
T
STG
Absolute maximum ratings
(T
CASE
= 25 °C)
Parameter
Drain-source voltage
Gate-source voltage
Drain current
Power dissipation
Max. operating junction temperature
Storage temperature
Value
40
-0.5 to +15
2
6
150
-65 to +150
Unit
V
V
A
W
°C
°C
1.2
Thermal data
Table 3.
Symbol
R
thJC
Thermal data
Parameter
Junction - case thermal resistance
Value
21
Unit
°C/W
3/18
Electrical characteristics
PD85004
2
Electrical characteristics
T
CASE
= +25
o
C
2.1
Static
Table 4.
Symbol
I
DSS
I
GSS
V
GS(Q)
V
DS(ON)
C
ISS
C
OSS
C
RSS
V
GS
= 0 V
V
GS
= 5 V
V
DS
= 13.6 V
V
GS
= 10 V
V
GS
= 0 V
V
GS
= 0 V
V
GS
= 0 V
Static
Test conditions
V
DS
= 25 V
V
DS
= 0 V
I
D
= 50 mA
I
D
= 0.25 A
V
DS
= 13.6 V
V
DS
= 13.6 V
V
DS
= 13.6 V
f = 1 MHz
f = 1 MHz
f = 1 MHz
3.9
0.27
16
14
1.1
Min
Typ
Max
1
1
Unit
μA
μA
V
V
pF
pF
pF
2.2
Dynamic
Table 5.
Symbol
P
OUT
G
PS
N
D
Dynamic
Test conditions
V
DD
= 13.6 V, I
DQ
= 50 mA, P
IN
= 0.1 W, f = 870 MHz
V
DD
= 13.6 V, I
DQ
= 50 mA, P
OUT
= 4 W, f = 870 MHz
V
DD
= 13.6 V, I
DQ
= 50 mA, P
OUT
= 4 W, f = 870 MHz
Min
4
15
60
20:1
Typ
5
17
65
Max
Unit
W
dB
%
VSWR
Load
V
DD
= 13.6 V, I
DQ
= 50 mA, P
OUT
= 4 W, f = 870 MHz
mismatch All phase angles
2.3
ESD protection characteristics
Table 6.
ESD protection characteristics
Test conditions
Human body model
Machine model
Class
2
M3
2.4
Moisture sensitivity level
Table 7.
Moisture sensitivity level
Test methodology
J-STD-020B
Rating
MSL 3
4/18
PD85004
Impedances
3
Impedances
Figure 2.
Impedances
Table 8.
Broadband impedances
F(MHz)
860
880
900
920
940
960
Z
GS
2.46+
j
6.63
2.59+
j
6.83
2.63+
j
6.97
2.57+
j
7.09
2.42+
j
7.17
2.27+
j
7.34
Z
DL
8.38+
j 2,83
8.08+
j
3.46
7.77
+ j
4.10
7.50+
j
4.77
7.15+
j
5.37
6.95+
j
6.07
5/18
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