BLF644P datasheet(3/12 Pages) AMPLEON

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BLF644P#3

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Product data sheet

Rev. 3 — 1 September 2015

3 of 12

BLF644P

Broadband power LDMOS transistor

6. Characteristics

7. Test information

7.1 Ruggedness in class-AB operation

The BLF644P is capable of withstanding a load mismatch corresponding to

VSWR = 10 : 1 through all phases under the following conditions: VDS =32V;

f = 860 MHz at rated load power.

Table 6.

DC characteristics

Tj = 25 C; per section unless otherwise specified.

Symbol Parameter

Conditions

Min Typ

Max Unit

V(BR)DSS drain-source breakdown voltage VGS = 0 V; ID =0.5 mA

VGS(th)

gate-source threshold voltage

VDS = 32 V; ID = 50 mA

1.4 1.9

2.4

VGSq

gate-source quiescent voltage

VDS = 32 V; IDq = 250 mA

1.5 2.0

2.5

IDSS

drain leakage current

VGS = 0 V; VDS =32 V

1.4

A

IDSX

drain cut-off current

VGS =VGS(th) + 3.75 V;

VDS =10V

-9.0

IGSS

gate leakage current

VGS = 10 V; VDS =0V

140 nA

gfs

forward transconductance

VDS = 10 V; ID = 2.5 A

3.3

RDS(on)

drain-source on-state resistance VGS =VGS(th) + 3.75 V;

ID =1.75 A

-300



Table 7.

AC characteristics

Tj = 25 C; per section unless otherwise specified.

Symbol Parameter

Conditions

Min Typ

Max Unit

Ciss

input capacitance

VGS = 0 V; VDS =32 V; f = 1MHz

Coss

output capacitance

VGS = 0 V; VDS =32 V; f = 1MHz

Crs

feedback capacitance

VGS = 0 V; VDS = 32 V; f = 1 MHz

0.84 -

Table 8.

RF characteristics

Test signal: CW pulsed, class-AB; f = 860 MHz; RF performance at VDS =32 V; IDq =200 mA;

Tcase = 25 C; unless otherwise specified; in a class-AB production test circuit.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

power gain

PL = 100 W

22.8

23.5

D

drain efficiency

PL = 100 W

RLin

input return loss

PL = 100 W

15

7dBc

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