33899 datasheet(4/26 Pages) FREESCALE

4 / 26 page

Analog Integrated Circuit Device Data

Freescale Semiconductor

33899

PIN CONNECTIONS

Slew Rate Control

This input pin is connected to a resistor that sets slew timing.

PWM

PWM Input

This input pin is used to set the motor switching and frequency duty cycle.

FWD

Forward Input

This input pin, along with the reverse input pin REV, determines the direction of

current flow in the H-Bridge.

REV

Reverse Input

This input pin, along with the forward input pin FWD, determines the direction of

current flow in the H-Bridge.

VCCL

3.3 V Input

3.3 V input source.

VCC

5.0 V Input

5.0 V input source.

CSNS

Current Sense

Output of current amplifier.

Tab/Pad

Thermal

Interface/

GND

Exposed Pad Thermal

Interface

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).

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

33899 Datasheet(PDF) 4 Page - Freescale Semiconductor, Inc