33899 Datasheet, PDF (4/26 Pages) Freescale Semiconductor, Inc – Programmable H-Bridge Power IC

PIN CONNECTIONS
Table 1. 33899 Pin Definitions (continued)
A functional description of each pin can be found in the Functional Pin Description section beginning on page 12.
Pin Number Pin Name
Formal Name
Definition
24
RS
Slew Rate Control ^{This input pin is connected to a resistor that sets slew timing.}
25
PWM
PWM Input
This input pin is used to set the motor switching and frequency duty cycle.
26
FWD
Forward Input
This input pin, along with the reverse input pin REV, determines the direction of
current flow in the H-Bridge.
27
REV
Reverse Input
This input pin, along with the forward input pin FWD, determines the direction of
current flow in the H-Bridge.
28
29
30
Tab/Pad
VCCL
VCC
CSNS
Thermal
Interface /
GND
3.3 V Input
5.0 V Input
Current Sense
Exposed Pad Thermal
Interface
3.3 V input source.
5.0 V input source.
Output of current amplifier.
The exposed pad, a thermal interface for sinking heat from the device, is also a
high-current GND connection and must be connected to GND (pins 12 and 19).
33899
4
Analog Integrated Circuit Device Data
Freescale Semiconductor