A3981KLPTR-T Allegro Microsystems Inc, A3981KLPTR-T Datasheet - Page 6

• Manufacturer Part Number: A3981KLPTR-T
• Description: AUTOMOTIVE PROGRAMMABLE STEPPER DRVR
• Manufacturer: Allegro Microsystems Inc

Specifications of A3981KLPTR-T

• Applications: Stepper Motor Driver, 2 Phase
• Number Of Outputs: 1
• Voltage - Load: 7 V ~ 28 V
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -40°C ~ 150°C
• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP (0.173", 4.40mm Width) Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Output: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

A3981
ELECTRICAL CHARACTERISTICS
Diagnostics and Protection
VBB Overvoltage Threshold
VBB Overvoltage Hysteresis
VREG Undervoltage Threshold
VREG Undervoltage Hysteresis
VDD Undervoltage Threshold
VDD Undervoltage Hysteresis
OSC Timeout
High-Side Overcurrent Threshold
High-Side Current Limit
Low-Side Overcurrent Sense Voltage
Overcurrent Fault Delay
Open Load Current Threshold Error
Temperature Voltage Output Offset
Temperature Voltage Output Slope
Cold Temperature Warning Threshold
Cold Temperature Warning Hysteresis
Hot Temperature Warning Threshold
Hot Temperature Warning Hysteresis
Overtemperature Shutdown Threshold
Overtemperature Hysteresis
1
2
3
below V
4
5
current: E
For input and output current specifications, negative current is defined as coming out of (sourcing) the specified device pin.
All references to “VBB” apply to VBBA and VBBB.
Function is correct but parameters are not guaranteed above or below the general limits (7 to 28 V). Outputs not operational above V
Assumes a 4 MHz clock.
Current Trip Point Error is the difference between actual current trip point and the target current trip point, referred to maximum full scale (100%)
REGUVL
Itrip
Characteristics
= 100 × [I
.
tripActual
– I
tripTarget
V
V
] / I
Symbol
V
T
T
V
V
V
BBOVHys
DDUVHys
RGUVHys
V
T
JWChys
T
JWHhys
I
T
REGUV
I
E
t
V
BBOV
DDUV
t
LIMH
T
OCH
SCT
FullScale
1,2
WD
A
JWC
JWH
OCL
Jhys
IOC
TO
JF
T
(continued) Valid at T
(%).
V
V
V
Bit 13 = 1
Sampled after t
Active during t
Sampled after t
Default Fault Delay
V
Temperature output selected on DIAG pin
Temperature decreasing
Temperature increasing
Temperature increasing
Recovery = T
BB
REG
DD
REF
Automotive, Programmable Stepper Driver
rising
falling
= 2 V, Mx0 = Mx1 = 1
falling
JF
SCT
SCT
SCT
Test Conditions
– T
J
Jhys
= –40°C to 150°C, V
BB
= 7 to 28 V, V
1500
Min.
210
–20
125
155
5.1
2.6
0.5
1.4
32
50
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
2
–
3
–
–
–
–
–
–
DD
= 3.3 V; unless otherwise noted
–3.92
2000
1440
Typ.
2.05
100
250
–10
135
170
5.5
34
15
15
15
–
–
1
–
1
–
Max.
2700
2.65
290
±10
145
5.4
2.9
1.5
36
4
–
–
8
–
–
0
–
–
–
–
BBOV
or
mV/°C
Unit
mV
mV
mV
μs
ns
ºC
ºC
ºC
ºC
ºC
ºC
%
V
V
V
V
V
A
A
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