Product Summary

The A3988SJPT is a quad DMOS full-bridge driver capable of driving up to two stepper motors or four dc motors. Each full-bridge output is rated up to 1.2 A and 36 V. The A3988SJPT includes fixed off-time pulse width modulation (PWM) current regulators, along with 2-bit nonlinear DACs (digital-to-analog converters) that allow stepper motors to be controlled in full, half, and quarter steps, and dc motors in forward, reverse, and coast modes. The PWM current regulator uses the Allegro patented mixed decay mode for reduced audible motor noise, increased step accuracy, and reduced power dissipation.

Parametrics

A3988SJPT absolute maximum ratings: (1)Load Supply Voltage, VBB: -0.5 to 36 V; Pulsed tw < 1μs, VBB: 38 V; (2)Logic Supply Voltage, VDD: -0.4 to 7 V; (3)Output Current, IOUT: 1.2 A; Pulsed, tw < 1 μs, IOUT: 2.8 A; (4)Logic Input Voltage Range, VIN: -0.3 to 7 V; (5)SENSEx Pin Voltage, VSENSEx: 0.5 V; Pulsed tw < 1 μs, VSENSEx: 2.5 V; (6)VREFx Pin Voltage, VREFx: 2.5 V; (7)Operating Temperature Range, TA: -20 to 85℃; (8)Junction Temperature, TJ(max): 150℃; (9)Storage Temperature Range, Tstg: -40 to 125℃.

Features

A3988SJPT features: (1)36 V output rating; (2)4 full bridges; (3)Dual stepper motor driver; (4)High current outputs; (5)3.3 and 5 V compatible logic supply; (6)Synchronous rectification; (7)Internal undervoltage lockout (UVLO); (8)Thermal shutdown circuitry; (9)Crossover-current protection; (10)Low profile QFN package.

Diagrams

 A3988SJPT block diagram

Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
A3988SJPTR-T
A3988SJPTR-T

IC PWM MOTR DVR FULL BRDG 48LQFP
Data Sheet
0-1: $3.35
1-10: $3.00
10-50: $2.70
50-100: $2.46
100-250: $2.22
250-500: $1.99
Image Part No Mfg Description Data Sheet Download Pricing
(USD)		 Quantity
A3980
A3980
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Data Sheet
Negotiable 
A3980KLP
A3980KLP

IC DRIVER MICROSTEPPING 28-TSSOP
Data Sheet
0-500: $1.87
A3980KLP-T
A3980KLP-T

IC MOTOR DRIVER MICROSTEP 28-TSS
Data Sheet
0-600: $1.87
A3980KLPTR
A3980KLPTR

IC DRIVER MICROSTEPPING 28-TSSOP
Data Sheet
Negotiable 
A3980KLPTR-T
A3980KLPTR-T

IC DRIVER MICROSTEPPING 28-TSSOP
Data Sheet
0-1: $3.71
1-10: $3.33
10-50: $2.99
50-100: $2.72
100-250: $2.46
250-500: $2.21
500-1000: $1.86
A3981KLPTR-T
A3981KLPTR-T

IC MOTOR DVR MICROSTEP 28-TSSOP
Data Sheet
0-1: $2.83
1-10: $2.54
10-50: $2.28
50-100: $2.08
100-250: $1.88
250-500: $1.68
500-1000: $1.42
1000-2500: $1.35