mc33291dw/r2 Freescale Semiconductor, Inc, mc33291dw/r2 Datasheet - Page 22

• Manufacturer Part Number: mc33291dw/r2
• Description: Eight-output Switch With Serial Peripheral Interface I/o
• Manufacturer: Freescale Semiconductor, Inc

number of outputs enabled at any one time. At 25°C the
R
junction temperature to remain below 150°C, the maximum
available power dissipation must decrease as the ambient
22
33291
FUNCTIONAL DESCRIPTION
DS(ON)
The total power dissipation available is dependent on the
in 450 mΩ with a coefficient of 6500 ppm/°C. For the
*
24-Lead
Package
Ω
SOIC
= °C/W, F = W s/°C, I PWR = W, and V A = °C
I PWR (Steady State or Transient)
(1.0 A = 1.0 W of Device Power Dissipation)
R d0
Rdx
(Ω)*
7.0
Output 0
C d0
0.002
C
(F)*
dx
Figure 22. Thermal Model (Electrical Equivalent)
R d1
R
(Ω)*
33
pkg
Output 1
R pkg = R leads + R PC Board
C d1
C
0.15
(F)*
pkg
R d2
Output 2
temperature increases.
of current at ambient temperatures necessary when one,
four, or eight outputs are enable ON.
how the R
temperature.
C d2
Flag Temperature Node
Junction Temperature Node
V D - T D (C°)
(Volts represent Die Surface Temperature)
Ambient Temperature Node
V A = T A (C°)
(1.0 V = 1°C Ambient Temperature)
DS(ON)
C pkg = C flag + C PC Board
output value is affected by junction
Output 6
Analog Integrated Circuit Device Data
Figure 23
R d6
C d6
depicts the per output limit
Freescale Semiconductor
Output 7
Figure 25
R d7
illustrates
C d7