CHA6250-QFG 参数 Datasheet PDF下载

5.5-9GHz Power Amplifier

Device thermal performances

CHA6250-QFG

All the figures given in this section are obtained assuming that the QFN device is cooled

down only by conduction through the package thermal pad (no convection mode considered).

The temperature is monitored at the package back-side interface (Tcase) as shown below.

The system maximum temperature must be adjusted in order to guarantee that Tcase

remains below than the maximum value specified in the next table. So, the system PCB must

be designed to comply with this requirement.

A derating must be applied on the dissipated power if the Tcase temperature can not be

maintained below than the maximum temperature specified (see the curve Pdiss. Max) in

order to guarantee the nominal device life time (MTTF).

DEVICE THERMAL SPECIFICATION : CHA6250-QFG

Recommended max. junction temperature (Tj max)

:

169

Junction temperature absolute maximum rating

:

175

Max. continuous dissipated power (Pdiss. Max.)

:

6.3

(1)

=> Pdiss. Max. derating above Tcase = 85

°C :

75

(2)

Junction-Case thermal resistance (Rth J-C)

:

<13

(3)

Minimum Tcase operating temperature

:

-40

(3)

Maximum Tcase operating temperature

:

85

Minimum storage temperature

:

-55

Maximum storage temperature

:

150

(1 Derating at junctio n temperature co nstant = Tj max.

)

°C

°C

W

mW/°C

°C/W

°C

°C

°C

°C

(2) Rth J-C is calculated fo r a wo rst case co nsidering the

ho t t e s t junc t io n

o f the M M IC and all the devices biased.

(3) Tcase=P ackage back side temperature measured under the die-attach-pad (see the drawing belo w).

7

Pdiss. Max. @Tj <Tj max (W)

Tcase

6

5

4

3

2

Pdiss. Max. @Tj <Tj max (W)

1

0

-50

-25

0

25

50

75

100

125

150

175

Example: QFN 16L 3x3

Location of temperature

reference point (Tcase)

on package's bottom side

Tcase (°C)

6.4

Ref. : DSCHA6250-QFG2272 - 28 Sep 12

3/14

Specifications subject to change without notice

Bat. Charmille - Parc SILIC - 10,

Avenue du Québec - 91140 VILLEBON-SUR-YVETTE - France

Tel.: +33 (0) 1 69 86 32 00 - Fax: +33 (0) 1 69 86 34 34