A3981 데이터 시트보기 (PDF) - Allegro MicroSystems
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A3981 Datasheet PDF : 43 Pages
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A3981
Automotive, Programmable Stepper Driver
Selection Guide
Part Number
A3981KLP-T
Packing*
50 pieces per tube
A3981KLPTR-T
4000 pieces per reel
*Contact Allegro™ for additional packing information.
4.4 mm × 9.7 mm, 1.2 mm nominal height TSSOP
with exposed thermal pad
Absolute Maximum Ratings With respect to GND
Characteristic
Symbol
Notes
Load Supply Voltage
Logic Supply Voltage
Pin CP1
VBBx
VDD
Applies to VBBA and VBBB
Pins CP2, VCP
Pins STEP, DIR, ENABLE, DIAG
Pin VREG
Pin RESETn
Pin OSC
Can be pulled to VBB with 38 kΩ
Pins MS0, MS1
Pins SDI, SDO, SCK, STRn
Pin REF
Pins OAP, OAM, OBP, OBM
Pins SENSA, SENSB
Ambient Operating Temperature
Range
TA
Range K; limited by power dissipation
Maximum Continuous Junction
Temperature
TJ(max)
Transient Junction Temperature
Overtemperature event not exceeding 10 s,
TtJ
lifetime duration not exceeding 10 hours,
guaranteed by design and characterization
Storage Temperature Range
Tstg
Rating
Unit
–0.3 to 50
V
–0.3 to 6
V
–0.3 to VBB
V
–0.3 to VBB+8
V
–0.3 to 6
V
–0.3 to 8.5
V
–0.3 to 6
V
–0.3 to 6
V
–0.3 to 6
V
–0.3 to 6
V
–0.3 to 6
V
–0.3 to VBB
V
–0.3 to 1
V
–40 to 150
°C
150
°C
175
°C
–55 to 150
°C
Thermal Characteristics may require derating at maximum conditions
Characteristic
Symbol
Test Conditions*
Package Thermal Resistance
(Junction to Ambient)
4-layer PCB based on JEDEC standard
RθJA
2-layer PCB with 24.52 cm2 of copper area each side
Package Thermal Resistance
(Junction to Pad)
RθJP
*Additional thermal information available on the Allegro website
Value
28
32
2
Unit
ºC/W
ºC/W
ºC/W
Allegro MicroSystems, LLC
2
115 Northeast Cutoff
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
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