UNISONIC TECHNOLOGIES CO., LTD

L6219

LINEAR INTEGRATED CIRCUIT

www.unisonic.com.tw

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Copyright © 2005 Unisonic Technologies Co., Ltd

QW-R109-005,B

DUAL FULL-BRIDGE PWM

MOTOR DRIVER

DESCRIPTION

The L6219 motor driver is designed to drive both windings of a

bipolar stepper motor or bidirectionally control two dc motors. Both

bridges are capable of sustaining 45V and include internal

pulse-width modulation (PWM) control of the output current to

750mA .The outputs have been optimized for a low output saturation

voltage drop (less than 1.8V total source plus sink at 500mA ).

For PWM current control, the maximum output current is

determined by the user’s selection of a reference voltage and

sensing resistor. Two logic-level inputs select output current limits of

0, 33, 67,or 100% of the maximum level. A phase input to each

bridge determines load current direction.

The bridges include both ground clamp and flyback diodes for

protection against inductive transients. Internally generated delays

prevent cross-over currents when switching current direction. Special

power-up sequencing is not required. Thermal protection circuitry

disables the outputs if the chip temperature exceeds safe operating

limits.

FEATURES

*Interchangeable with SGS L6219

*750mA Continuous Output Current

*45V Output Sustaining Voltage

*Internal Clamp Diodes

*Internal PWM Current Control

*low Output Saturation Voltage

*Internal Thermal Shutdown Circuitry

SOP-24

*Pb-free plating product number: L6219L

ORDERING INFORMATION

Order Number

Normal

Lead Free Plating

Package

Packing

L6219-S24-R

L6219L-S24-R

SOP-24

Tape Reel

L6219-S24-T

L6219L-S24-T

SOP-24

Tube

L6219L -S24- R

(1)Packing Type

(2)Package Type

(3)Lead Plating

(1) R: Tape Reel, T: Tube

(2) S24: SOP-24

(3) L: Lead Free Plating, Blank: Pb/Sn