3971 Datasheet | Allegro MicroSystems

FEATURES I ±2.5 A Load Current Capability per Bridge I Parallel Outputs for 5 A Load-Current Capability I Low r DS(on) Outputs Typically 325 mΩ source, 175 mΩ sink I Synchronous Rectification via Control Logic I Internal Undervoltage Monitor I Crossover-Current Protection I Source Connections for External Current Sensing I Thermal Shutdown Circuitry Always order by plete part number: A3971SLB . 3971 DUAL DMOS FULL-BRIDGE DRIVER FUNCTIONAL BLOCK DIAGRAM 0.22 µF/100 V LOGIC SUPPLY CP2 CP1 VCP V REF VOLTAGE REFERENCE LOW SIDE SUPPLY CHARGE PUMP VBB2 0.22 µF 50 V LOAD SUPPLY DMOS H-BRIDGE UVLO & THERMAL SHUTDOWN OUT2A OUT2B S10 S11 3 10 BRIDGE 1 CONTROL LOGIC GATE DRIVE DMOS H-BRIDGE SENSE2 RS, CS (OPTIONAL) PWM1 11 VBB1 S20 22 S21 15 PWM2 BRIDGE 2 CONTROL...