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L6258EX

STMicroelectronics
Part Number L6258EX
Manufacturer STMicroelectronics
Description PWM controlled high current DMOS universal motor driver
Published May 4, 2009
Detailed Description L6258EX www.datasheet4u.com PWM controlled high current DMOS universal motor driver Features ■ ■ ■ ■ ■ ■ ■ ■ ■ Able t...
Datasheet PDF File L6258EX PDF File

L6258EX
L6258EX

Overview
L6258EX www.
datasheet4u.
com PWM controlled high current DMOS universal motor driver Features ■ ■ ■ ■ ■ ■ ■ ■ ■ Able to drive both windings of a bipolar stepper motor or two DC motors Output current up to 1.
5A each winding Wide voltage range: 12V to 40V Four quadrant current control, ideal for microstepping and DC motor control Precision PWM control No need for recirculation diodes TTL/CMOS compatible inputs Cross conduction protection Thermal shutdow The power stage is a dual DMOS full bridge capable of sustaining up to 40V, and includes the diodes for current recirculation.
The output current capability is 1.
5A per winding in continuous mode, with peak start-up current up to 2A.
A thermal protection circuitry disables the outputs if the chip temperature exceeds the safe limits.
PowerSO36 Description L6258EX is a dual full bridge for motor control applications realized in BCD technology, with the capability of driving both windings of a bipolar stepper motor or bidirectionally control two DC motors.
L6258EX and a few external components form a complete control and drive circuit.
It has high efficiency phase shift chopping that allows a very low current ripple at the lowest current control levels, and makes this device ideal for steppers as well as for DC motors.
Table 1.
Device summary Order code E-L6258EX E-L6258EXTR Package PowerSO36 PowerSO36 Packing Tube Tape&Reel December 2007 Rev 6 1/32 www.
st.
com 1 Contents L6258EX Contents 1 www.
datasheet4u.
com 2 Block diagram .
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5 Functional description .
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10 2.
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7 Reference voltage .
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11 Input logic (I0 - I1 - I2 - I3) .
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12 Phase input ( PH ) .
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