34923 Datasheet (Freescale Semiconductor) - Full-Bridge PWM Motor Driver

34923, Full-Bridge PWM Motor Driver

Freescale Semiconductor, Inc Pin 1 2 3 4 5 6, 7, 18, 19 8 9 10 11 12 13 14 15, 22 16 17 20 21 23 24 Pin Name VB CP2 CP1 DIR OSC GND VDD PWM/ENABLE DATA CLOCK STROBE VREF PWMMODE NC DCMA SENSE VBB DCMB SPAN VREG Formal Name Boost Voltage Switching Capacitor 2 Switching Capacitor 1 Direction Oscil

www.DataSheet4U.com Freescale Semiconductor, Inc.

Order this document from Analog Marketing: MC34923/D Rev 0, 05/2003 MOTOROLA SEMICONDUCTOR TECHNICAL DATA Preliminary Information Full-Bridge PWM Motor Driver Designed with Motorola’s advanced SMARTMOS, the 34923 is designed for pulse-width modulated (PWM) current control of DC motors.

It is capable of continuous output currents up to 2.0 A and operating voltages of up to 45 V.

Internal fixed off-time PWM current-control timing circuitry can

34923 Features

* ±2.0 A, 45 V Continuous Output Rating

* Low RDS(ON) Outputs (270 mΩ, typical)

* Programmable Mixed, Fast, and Slow Current-Decay Modes

* Serial Interface Controls Chip Functions

* Synchronous Rectification for Low Power Dissipation

* Internal Undervo