BLF545 Philips Semiconductors, BLF545 Datasheet - Page 6

• Manufacturer Part Number: BLF545
• 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, class-B, push-pull circuit.
Ruggedness in class-B operation
The BLF545 is capable of withstanding a full load
mismatch corresponding to VSWR = 50 through all phases
under the following conditions:
V
October 1992
CW, class-B
handbook, halfpage
h
DS
UHF push-pull power MOS transistor
= 25 C; R
Class-B operation; V
Z
Fig.9
L
= 28 V; f = 500 MHz at rated output power.
MODE OF OPERATION
= 4.2
(dB)
G p
24
16
8
0
0
Power gain and efficiency as functions of
load power, typical values per section.
j6.2
th mb-h
(per section); f = 500 MHz.
DS
= 0.25 K/W, unless otherwise specified.
= 28 V; I
20
G p
D
DQ
= 2
40 mA;
40
(MHz)
500
P L (W)
f
MBK464
60
80
20
(%)
60
40
D
V
(V)
28
DS
6
handbook, halfpage
Class-B operation; V
Z
Fig.10 Load power as a function of input power,
L
2
(mA)
= 4.2
(W)
P L
I
DQ
60
40
20
0
40
0
typical values per section.
j6.2
(per section); f = 500 MHz.
DS
2
(W)
P
40
= 28 V; I
L
DQ
4
= 2
typ. 13
(dB)
G
40 mA;
11
P
Product specification
6
P IN (W)
BLF545
MBK465
typ. 60
8
(%)
50
D