mc33742 Freescale Semiconductor, Inc, mc33742 Datasheet - Page 62

• Manufacturer Part Number: mc33742
• Description: Mc33742 System Basis Chip Sbc With Enhanced High-speed Can Transceiver
• Manufacturer: Freescale Semiconductor, Inc

Device on Thermal Test Board
62
33742
ADDITIONAL DOCUMENTATION
THERMAL ADDENDUM (REV 2.0)
Material:
Outline:
Area A:
Ambient Conditions: Natural convection, still air
V2CTRL
VSUP
GND
GND
GND
GND
RXD
VDD
TXD
RST
INT
HS
V2
L0
18.0 mm x 7.5 mm Body
33742 Pin Connections
28-Pin SOICW
1.27 mm Pitch
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Single layer printed circuit board
FR4, 1.6 mm thickness
Cu traces, 0.07 mm thickness
80 mm x 100 mm board area,
including edge connector for thermal
testing
Cu heat-spreading areas on board
surface
28
27
26
25
24
23
22
21
20
19
18
17
16
15
WDOG
CS
MOSI
MISO
SCLK
GND
GND
GND
GND
CANL
CANH
L3
L2
L1
Figure 39. Thermal Test Board
A
Table 44. Thermal Resistance Performance
ambient air.
R
θJA
is the thermal resistance between die junction and
A [mm²]
300
600
Analog Integrated Circuit Device Data
0
R
θJA
Freescale Semiconductor
68
52
47
[°C/W]