33888 Datasheet, PDF (6/40 Pages) Freescale Semiconductor, Inc – Quad High-Side and Octal Low-Side Switch for Automotive

FSI ¹
WDIN ²
FS ³
VPWR ⁴
LS4 ⁵
GND ⁶
LS5 ⁷
LS6 8
GND 9
LS7 10
LS8 11
GND 12
LS9 13
LS10 14
GND 15
LS11 16
V_DD 17
SO 18
CS 19
SCLK 20
52 NC
51 NC
50 NC
49 HS0
48 HS0
47 HS0
46 HS0
45 HS0
44 HS0
43 HS0
42 HS1
41 HS1
40 HS1
39 HS1
38 HS1
37 HS1
36 HS1
35 NC
34 NC
33 NC
Figure 4. 33888 Pin Connections for PQFP
Table 3. 33888 Pin Definitions for PQFP
A functional description of each pin can be found in the Functional Pin Description section beginning on page 18.
Pin Number Pin Name Pin Function Formal Name
Definition
1
FSI
Input
Fail-Safe Input
The Fail-Safe input pin level determines the state of the outputs after a
watchdog timeout occurs. This pin has an internal pullup.
2
WDIN
Input
Watchdog Input This input pin is a CMOS logic level input that is used to monitor system
operation.
3
4, 26, 27,
58, 59
FS
VPWR
Output
Input
Fault Status
(Active Low)
This output pin is an open drain indication that goes active low when a
fault mode is detected by the device.
Positive Power Supply These pin connects to the positive power supply and are the source input
of operational power for the device. Pins 4, 26, 27, 58 and 59 must be
shorted together on the board.
5
8
11
14
6, 9, 12, 15
LS4
LS6
LS8
LS10
GND
Output
Ground
Low-Side Output 4
Low-Side Output 6
Low-Side Output 8
Low-Side Output 10
Power Ground
These outputs are current and thermal overload protected. Maximum
steady state current through each of these outputs is 500 mA.
These pins serve as the ground for the source of the low-side output
transistors as well as the logic portion of the device. Pins 6, 9, 12 and 15
must be shorted together on the board.
33888
6
Analog Integrated Circuit Device Data
Freescale Semiconductor