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UDN2916LBTR-T PDF Îĵµ ALLEGRO 2916[1].PDF

Description
The UDx2916 motor drivers drive both windings of a bipolar
stepper motor or bidirectionally control two DC motors.
Both bridges are capable of sustaining 45 V and include
internal pulse-width modulation (PWM) control of the
output current to 750 mA.  The outputs have been optimized
for a low output saturation voltage drop (less than 1.8 V
total source plus sink at 500 mA).
For PWM current control, the maximum output current is
determined  by user 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 crossover 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.
The device is supplied in a 24-pin dual in-line plastic (DIP,
Features and Benefits
▪ 750 mA continuous output current
▪ 45 V output sustaining voltage
▪ Internal clamp diodes
▪ Internal PWM current control
▪ Low output saturation voltage
▪ Internal thermal shutdown circuitry
▪ Similar to dual PBL3717 or UC3770
Dual Full-Bridge PWM Motor Driver
Packages
2916
Package B 24-pin
Batwing DIP
Package LB 24-pin
Batwing SOI

Dual Full-Bridge Motor Driver 2916
of batwing leads. The EB package is a 44-lead power PLCC with 11
internally-fused leads on two sides. Their webbed-lead construction
provides for maximum package power dissipation in the smallest
possible construction.
The devices are available for operation from ¨C20¡ãC to 85¡ãC (range N),
and from ¨C40¡ãC to 105¡ãC (range Q). All packages are lead (Pb) free,
with 100% matte tin leadframe plating.
Description (continued)

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