A3955SLB-T Allegro Microsystems Inc, A3955SLB-T Datasheet - Page 6

• Manufacturer Part Number: A3955SLB-T
• Description: IC MOTOR DRIVER PWM FULL 16-SOIC
• Manufacturer: Allegro Microsystems Inc

Specifications of A3955SLB-T

• Applications: Stepper Motor Driver
• Number Of Outputs: 1
• Current - Output: ±1.5A
• Voltage - Load: 4.5 V ~ 50 V
• Voltage - Supply: 4.5 V ~ 5.5 V
• Operating Temperature: -20°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Motor Type: Full Bridge
• No. Of Outputs: 2
• Output Current: 1.5A
• Output Voltage: 50V
• Supply Voltage Range: 4.5V To 5.5V
• Driver Case Style: SOIC
• No. Of Pins: 16
• Operating Temperature Range: -20°C To
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 620-1068

A3955
ELECTRICAL CHARACTERISTICS (continued) at T
5.5 V (unless otherwise noted. )
AC Timing
Control Circuitry (cont’d)
Characteristic
Thermal Shutdown Temp.
Thermal Shutdown Hysteresis
PWM RC Fixed Off-time
PWM Turn-Off Time
PWM Turn-On Time
PWM Minimum On Time
Crossover Dead Time
Full-Bridge PWM Microstepping Motor Driver
t
Symbol
t
PWM(OFF)
PWM(ON)
t
t
OFF RC
ON(min)
t
CODT
∆T
T
J
J
Test Conditions
C
Current-Sense Comparator Trip
Current-Sense Comparator Trip
I
I
V
1 kΩ Load to 25 V
RC
RC
CC
T
= 470 pF, R
to Source OFF, I
to Source OFF, I
I
I
I
Charge ON to Source ON,
Charge ON to Source ON,
OUT
OUT
OUT
= 5.0 V, R
= 100 mA
= 1.5 A
= 100 mA
T
T
= 43 kΩ
≥ 43 kΩ, C
OUT
OUT
A
= 25°C, V
= 100 mA
= 1.5 A
T
= 470 pF
BB
= 5 V to 50 V, V
Min.
18.2
115 Northeast Cutoff
1.508.853.5000; www.allegromicro.com
Allegro MicroSystems, Inc.
Worcester, Massachusetts 01615-0036 U.S.A.
1.0
0.3
—
—
—
—
—
—
Typ.
20.2
0.55
165
1.0
1.4
0.4
1.6
1.5
15
Limits
CC
= 4.5 V to
Max.
22.3
0.85
1.5
2.5
0.7
2.2
3.0
—
—
Units
°C
°C
μs
μs
μs
μs
μs
μs
μs
5