mm908e626 Freescale Semiconductor, Inc, mm908e626 Datasheet - Page 36

• Manufacturer Part Number: mm908e626
• Description: Integrated Stepper Motor Driver With Embedded Mcu And Lin Serial Communication
• Manufacturer: Freescale Semiconductor, Inc

Device on Thermal Test Board
36
908E626
ADDITIONAL DOCUMENTATION
THERMAL ADDENDUM (REV 1.0)
Material:
Outline:
Area A:
Ambient Conditions:
PTD0/TACH0/BEMF
PTB7/AD7/TBCH1
PTB6/AD6/TBCH0
PTD1/TACH1
PTC2/MCLK
PTC4/OSC1
PTC3/OSC2
PTB5/AD5
PTB4/AD4
PTB3/AD3
PTB1/AD1
VSUP1
VSUP2
RST_A
FGEN
BEMF
IRQ_A
GND1
HB1
HB2
RST
IRQ
LIN
NC
NC
NC
SS
908E626 Terminal Connections
10.3 mm x 5.1 mm Exposed Pad
17.9 mm x 7.5 mm Body
54-Terminal SOICW-EP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
0.65 mm Pitch
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
Natural convection, still air
Exposed
Pad
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
PTA0/KBD0
PTA1/KBD1
PTA2/KBD2
FLSVPP
PTA3/KBD3
PTA4/KBD4
VREFH
VDDA
EVDD
EVSS
VSSA
VREFL
PTE1/RXD
RXD
VSS
NC
VDD
NC
NC
NC
HVDD
NC
HB4
VSUP3
GND2
HB3
NC
Figure 20. Thermal Test Board
Table 10. Thermal Resistance Performance
ambient air.
the reference location on the board surface near a center
lead of the package.
die that is heated. Index n refers to the number of the die
where the junction temperature is sensed.
Resistance
R
R
Thermal
R
R
This device is a dual die package. Index m indicates the
θ
θ
JAmn
JSmn
θ JA
θ JSmn
is the thermal resistance between die junction and
is the thermal resistance between die junction and
Area A
(mm
300
600
300
600
0
0
2
A
A
)
Analog Integrated Circuit Device Data
1 = Power Chip, 2 = Logic Chip
m = 1,
n = 1
53
39
35
21
15
14
Freescale Semiconductor
m = 1, n = 2
m = 2, n = 1
9.0
48
34
30
16
11
m = 2,
n = 2
(°C/W)
53
38
34
20
15
13