Dual Full-Bridge MOSFET Driver
with Microstepping Translator
A3986
Description (continued)
The above-supply voltage required for the high-side N-channel
In addition to crossover current control, internal circuit protection
providesthermalshutdownwithhysteresisandundervoltagelockout.
Special power-up sequencing is not required.
MOSFETs is provided by a bootstrap capacitor. Efficiency is
enhanced by using synchronous rectification and the power FETs
are protected from shoot-through by integrated crossover control
and programmable dead time.
Thiscomponentissuppliedinan38-pinTSSOP(packageLD).The
package is lead (Pb) free, with 100% matte tin leadframe plating.
Selection Guide
Part Number
A3986SLD-T
A3986SLDTR-T
Packing*
Tube, 50 pieces per tube
Tape and reel, 4000 pieces per reel
*Contact Allegro for additional packing options
Absolute Maximum Ratings
Characteristic
Symbol
Notes
Rating
–0.3 to 50
–0.3 to 7
–0.3 to 7
–1 to 1
Units
V
Supply Voltage
VBB
VDD
Logic Supply Voltage
Logic Inputs and Outputs
SENSEx pins
V
V
V
Sxx pins
–2 to 55
V
LSSx pins
–2 to 5
V
GHxx pins
Sxx to Sxx+15
–2 to 16
V
GLxx pins
V
Cxx pins
–0.3 to Sxx+15
–20 to 85
150
V
Operating Ambient Temperature
Junction Temperature
Storage Temperature
TA
TJ(max)
Tstg
Range S
ºC
ºC
ºC
–55 to 150
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
2
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
