A3977SLP-T Allegro Microsystems Inc, A3977SLP-T Datasheet - Page 6

• Manufacturer Part Number: A3977SLP-T
• Description: IC MOTOR DRIVER PWM DUAL 28-TSSO
• Manufacturer: Allegro Microsystems Inc

Specifications of A3977SLP-T

• Applications: Stepper Motor Driver
• Number Of Outputs: 1
• Current - Output: ±2.5A
• Voltage - Load: 8 V ~ 35 V
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-TSSOP Exposed Pad, 28-eTSSOP, 28-HTSSOP
• Operating Current: 12mA
• Operating Temperature Classification: Commercial
• Package Type: TSSOP EP
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (typ): 5V
• Operating Supply Voltage (max): 5.5V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 620-1079

A3977
ELECTRICAL CHARACTERISTICS (cont’d) at T A = +25°C, V BB = 35 V, V DD = 3.0 V to 5.5V
(unless otherwise noted)
* Operation at a step frequency greater than the specifi ed minimum value is possible but not warranteed.
NOTES:
Mixed Decay Trip Point
Ref. Input Voltage Range
Reference Input Current
Gain (G
(note 3)
Crossover Dead Time
Thermal Shutdown Temp.
Thermal Shutdown Hysteresis
UVLO Enable Threshold
UVLO Hysteresis
Logic Supply Current
Control Logic (cont’d)
1. Typical Data is for design information only.
2. Negative current is defi ned as coming out of (sourcing) the specifi ed device terminal.
3. E
G
m
Characteristic
= ([V
) Error
REF
/8] – V
SENSE
)/(V
REF
Symbol
∆V
V
PFDH
PFDL
V
/8)
∆T
I
UVLO
I
E
t
REF
T
REF
UVLO
DT
DD
G
Microstepping DMOS Driver with Translator
J
J
Operating
V
V
V
SR enabled
Increasing V
f
Outputs off
Sleep mode
PWM
REF
REF
REF
= 2 V, Phase Current = 38.27%
= 2 V, Phase Current = 100.00%
< 50 kHz
= 2 V, Phase Current = 70.71%
Test Conditions
DD
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
Min.
2.45
0.05
100
–
–
0
–
–
–
–
–
–
–
–
–
0.21V
0.6V
Typ.
0.10
475
165
2.7
15
–
0
–
–
–
–
–
–
DD
Limits
DD
Max.
±3.0
±5.0
±5.0
2.95
V
±10
800
12
10
20
–
–
–
–
–
DD
Units
mA
mA
μA
μA
ns
°C
°C
%
%
%
V
V
V
V
V
6