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A3969 Datasheet(PDF) 2 Page - Allegro MicroSystems

Part No. A3969
Description  Dual Full-Bridge PWM Motor Driver
Download  9 Pages
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Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems

A3969 Datasheet(HTML) 2 Page - Allegro MicroSystems

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Dual Full-Bridge PWM Motor Driver
A3969
2
Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
www.allegromicro.com
For each bridge, a PHASE input controls load-current polarity by
selecting the appropriate source and sink driver pair. For each
bridge, an ENABLE input, when held high, disables the output
drivers. Special power-up sequencing is not required. Internal circuit
protection includes thermal shutdown with hysteresis, ground-clamp
and flyback diodes, and crossover-current protection.
TheA3969 is supplied in a 28-pin QFN lead (Pb) free plastic package
with exposed thermal pad and 100% matte tin leadframe plating. It
has a 5 x 5 mm footprint and 0.90 mm nominal height.
Thermal Characteristics*
(additional data available on Allegro Web site)
Characteristic
Symbol
Notes
Rating
Units
Package Thermal Resistance, Junction-to-Ambient
RθJA
4-layer PCB, based on JEDEC standard
32
°C/W
Package Thermal Resistance, Junction-to-Tab
RθJT
2
°C/W
Package Power Dissipation
PD(max)
RθJA = 32 °C/W, TA = 25°C
3.9
W
* Per SEMI G42-88 Specification, Thermal Test Board Standardization for Measuring Junction-to-Ambient Thermal Resistance of Semiconductor
Packages.
Description (continued)
Selection Guide
Part Number
Packing*
Package
A3969SET-T
73 pieces/tube
5 x 5 mm QFN, 28 pin
A3969SETTR-T
Tape, 3000 pieces/reel
*Contact Allegro for additional packing options
Absolute Maximum Ratings
Characteristic
Symbol
Notes
Rating
Units
Load Supply Voltage
VBB
30
V
Output Current
IOUT
Peak
±750
mA
Continuous. Output current rating may be limited by duty
cycle, ambient temperature, and heat sinking. Under any set
of conditions, do not exceed the specified current rating or a
junction temperature of 150°C.
±650
mA
Logic Supply Voltage
VCC
7V
Input Voltage
Vin
-0.3 to
VCC + 0.3
V
Sense Voltage
VS
0.45
V
Operating Ambient Temperature
TA
Range S
–20 to 85
ºC
Maximum Junction Temperature
TJ(max)
150
ºC
Storage Temperature
Tstg
–55 to 150
ºC


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