BLF547 Philips Semiconductors, BLF547 Datasheet - Page 6

• Manufacturer Part Number: BLF547
• Description: UHF push-pull power MOS transistor
• Manufacturer: Philips Semiconductors

Philips Semiconductors
APPLICATION INFORMATION FOR CLASS-B OPERATION
T
RF performance in a common source, push-pull, class-B test circuit.
Ruggedness in class-B operation
The BLF547 is capable of withstanding a load mismatch
corresponding to VSWR = 10 through all phases under the
following conditions:
V
October 1992
handbook, halfpage
CW, class-B
h
DS
UHF push-pull power MOS transistor
= 25 C; R
Class-B operation; V
f = 500 MHz; Z
Fig.9
= 28 V; f = 500 MHz at rated output power.
MODE OF OPERATION
(dB)
G P
25
20
15
10
5
0
20
Power gain and efficiency as functions of
load power, typical values.
th mb-h
L
= 1.5
G P
DS
= 0.15 K/W, unless otherwise specified.
= 28 V; I
j1.8
60
(per section).
DQ
= 2
100 mA;
100
(MHz)
500
P L (W)
f
MRB021
140
100
80
60
40
20
0
(%)
V
(V)
28
DS
6
handbook, halfpage
Class-B operation; V
f = 500 MHz; Z
Fig.10 Load power as a function of input power,
2
(mA)
(W)
I
160
120
P L
DQ
80
40
100
0
0
typical values.
L
= 1.5
4
DS
100
(W)
P
= 28 V; I
j1.8
L
8
(per section).
DQ
= 2
typ. 12
12
(dB)
G
100 mA;
10
P
Product specification
16
P IN (W)
BLF547
MRB028
typ. 55
20
(%)
50
D