MS3988/MS3988N
Function and Feature
The MS3988/MS3988N is a quad DMOS full-bridge driver capable of driving up to two ...
MS3988/MS3988N
Function and Feature
The MS3988/MS3988N is a quad DMOS full-bridge driver capable of driving up to two stepper
motors or four dc motors. Eachfull-bridge output is rated up to 1.2 A and 36 V. The
MS3988/MS3988N 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 mixed decay mode for reduced audible motor noise, increased step
accuracy, and reduced power dissipation.
Internal synchronous rectification control circuitry is provided to improve power dissipation
during PWM operation. Protection features include thermal shutdown with hysteresis,
undervoltage lockout (UVLO) and crossover current protection.Special power up sequencing is
not required.
The MS3988/MS3988N is supplied in two packages QFN36，TQFP48,with exposed power tabs
for enhanced thermal performance.
Featues and benifits：
■36 V output rating
■4 full bridges
■High current outputs
■3.3 and 5 V compatible logic
supply
■Synchronous rectification
■UVLO protection
■Thermal shutdown circuitry
■Crossover-current protection
MS3988
MS3988N
PIN Function description：
Hangzhou Ruimeng Technology Co.,LTD
Http: www.relmon.com
-1-
MS3988/MS3988N
Pin NO.
MS3988/MS3 988NN 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30...
