CHR3352-QEG 查看數據表（PDF） - United Monolithic Semiconductors
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CHR3352-QEG Datasheet PDF : 16 Pages
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CHR3352-QEG
12-16GHz Integrated Down Converter
Device thermal performances
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 : CHR3352-QEG
Recommended max. junction temperature (Tj max)
:
174 °C
Junction temperature absolute maximum rating
:
175 °C
Max. continuous dissipated power (Pdiss. Max.)
:
1.0 W
=> Pdiss. Max. derating above Tcase(1)= 85
Junction-Case thermal resistance (Rth J-C)(2)
°C :
:
11 mW/°C
<89 °C/W
Minimum Tcase operating temperature(3)
:
-40 °C
Maximum Tcase operating temperature(3)
:
85 °C
Minimum storage temperature
:
-55 °C
Maximum storage temperature
:
150 °C
(1) Derating at junctio n temperature co nstant = Tj max.
(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).
1.2
Tcase
1
0.8
0.6
0.4
Pdiss. Max. @Tj <Tj max (W)
0.2
-50 -25 0
0
25 50 75 100 125 150 175
Tcase (°C)
Example: QFN 16L 3x3
Location of temeprature
reference point (Tcase)
on package's bottom side
6.0
Ref. : DSCHR3352-QEG1192 - 11 Jul 11
4/16
Route Départementale 128, BP46 - 91401 ORSAY Cedex - FRANCE
Tel.: +33 (0) 1 69 33 03 08 - Fax: +33 (0) 1 69 33 03 09
Specifications subject to change without notice
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