L6208Q Datasheet, PDF (1/34 Pages) STMicroelectronics – DMOS driver for bipolar stepper motor

L6208Q
DMOS driver for bipolar stepper motor
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Features
 Operating supply voltage from 8 to 52 V
 5.6 A output peak current
 R_DS(on) 0.3  typ. value at T_j = 25 °C
 Operating frequency up to 100 kHz
 Non-dissipative overcurrent protection
 Dual independent constant t_OFF PWM current
controllers
 Fast/slow decay synchronous rectification
 Fast decay quasi-synchronous rectification
 Decoding logic for stepper motor full and half
step drive
 Cross conduction protection
 Thermal shutdown
 Undervoltage lockout
 Integrated fast freewheeling diodes
Application
 Bipolar stepper motor
Datasheet - production data
Description
The L6208Q device is a DMOS fully integrated
stepper motor driver with non-dissipative
overcurrent protection, realized in BCDmultipower
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 a VFQFPN48
7 x 7 mm package, the L6208Q features a non-
dissipative overcurrent protection on the high-side
Power MOSFETs and thermal shutdown.
June 2013
This is information on a product in full production.
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