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L6208PD ·â×°36-lead SOIC
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L6208PD ѯ¼Û    0755-83283733

DMOS DRIVER FOR BIPOLAR STEPPER MOTOR

n OPERATING SUPPLY VOLTAGE FROM 8 TO 52V
n 5.6A OUTPUT PEAK CURRENT (2.8A RMS)
n RDS(ON) 0.3W TYP. VALUE @ Tj = 25¡ãC
n OPERATING FREQUENCY UP TO 100KHz
n NON DISSIPATIVE OVERCURRENT
PROTECTION
n DUAL INDEPENDENT CONSTANT tOFF PWM
CURRENT CONTROLLERS
n FAST/SLOW DECAY MODE SELECTION
n FAST DECAY QUASI-SYNCHRONOUS
RECTIFICATION
n DECODING LOGIC FOR STEPPER MOTOR
FULL AND HALF STEP DRIVE
n CROSS CONDUCTION PROTECTION
n THERMAL SHUTDOWN
n UNDER VOLTAGE LOCKOUT
n INTEGRATED FAST FREE WHEELING DIODES
TYPICAL APPLICATIONS
n BIPOLAR STEPPER MOTOR
DESCRIPTION
The L6208 is a DMOS Fully Integrated Stepper Motor
Driver with non-dissipative Overcurrent Protection,
realized in MultiPower-BCD technology, which combines
isolated DMOS Power Transistors with CMOS
and bipolar circuits on the same chip. The device includes
all the circuitry needed to drive a two-phase
bipolar stepper motor including: a dual DMOS Full
Bridge, the constant off time PWM Current Controller
that performs the chopping regulation and the Phase
Sequence Generator, that generates the stepping
sequence. Available in PowerDIP24 (20+2+2),
PowerSO36 and SO24 (20+2+2) packages, the
L6208 features a non-dissipative overcurrent protection
on the high side Power MOSFETs and thermal
shutdown.