33874 Datasheet, PDF (3/37 Pages) Freescale Semiconductor, Inc – Quad High-Side Switch (Quad 35 mΩ)

Transparent Top View of Package
PIN CONNECTIONS
13 12 11 10 9 8 7 6 5 4 3 2 1
SO 16
GND 17
HS3 18
14
GND
24 FSI
23 GND
22 HS2
15
VPWR
PIN CONNECTIONS
19
20
21
HS1
NC
HS0
Figure 3. 33874 Pin Connections
Table 1. 33874 Pin Definitions
A functional description of each pin can be found in the Functional Pin Description section beginning on page 15.
Pin
Number
Pin Name
Pin
Function
Formal Name
Definition
1
CSNS
Output
Output Current
The Current Sense pin sources a current proportional to the designated
Monitoring
HS0 : HS3 output.
2
IN0
Input
Serial Inputs
The IN0 : IN3 high-side input pins are used to directly control HS0 : HS3 high-
3
IN1
side output pins, respectively.
5
IN2
6
IN3
4
TEMP
Output
Temperature
This pin reports an analog value proportional to the temperature of the GND
Feedback
flag (pins 14, 17, 23). It is used by the MCU to monitor board temperature.
7
FS
Output
Fault Status
This pin is an open drain configured output requiring an external pullup resistor
(Active Low)
to VDD for fault reporting.
8
WAKE
Input
Wake
This input pin controls the device mode and watchdog timeout feature if
enabled.
9
RST
Input
Reset
This input pin is used to initialize the device configuration and fault registers,
as well as place the device in a low-current sleep mode.
10
CS
Input
Chip Select
This input pin is connected to a chip select output of a master microcontroller
(Active Low)
(MCU).
11
SCLK
Input
Serial Clock
This input pin is connected to the MCU providing the required bit shift clock for
SPI communication.
12
SI
Input
Serial Input
This pin is a command data input pin connected to the SPI Serial Data Output
of the MCU or to the SO pin of the previous device of a daisy-chain of devices.
13
VDD
Power Digital Drain Voltage This pin is an external voltage input pin used to supply power to the SPI circuit.
(Power)
Analog Integrated Circuit Device Data
Freescale Semiconductor
33874
3