UPD16814 Datasheet | NEC

DESCRIPTION The µPD16814GS is a monolithic dual H bridge driver circuit employing a power MOS FET for its driver stage. By plementing the P channel and N channel of the output stage, the circuit current is substantially improved as pared with that of the conventional charge pump driver. Because the dual H bridge driver circuits at the output stage are independent of each other, this IC is ideal as the driver circuit for a 1- to 2-phase excitation bipolar driving stepping motor for the head actuator of an FDD. FEATURES - Low ON resistance (sum of ON resistance of top and bottom FETs) RON1 = 2.0 Ω TYP. - Low current consumption: IDD = 100 µA MAX. - Four input modes independently controlling dual H bridge drivers - Stop and Brake modes selectable - Surface-mount mini-mold package: 16-pin plastic SOP (300 mil) PIN CONFIGURATION (Top View) VM1 1A PGND1 2A VDD IN1 IN3 IN2 1 2 3 16 15 14 NC 1B PGND2 2B VM2 SEL IN4 DGND µPD16814GS 4 5 6 7 8 13 12 11 10 9 ORDERING INFORMATION Part Number Package 16-pin plastic SOP (300 mil) µPD16814GS The information in this document is subject to change without notice. Document No. S10112EJ4V0DS00 (4th edition) Date Published August 1997 N Printed in Japan © µPD16814 BLOCK DIAGRAM VDD 5 VM 1 IN1 6 CONTROL CIRCUIT 1 IN2 8 “H” BRIDGE 1 15 3 SEL 11 12 IN3 7 IN4 10 CONTROL CIRCUIT 2 “H” BRIDGE 2 4 13 DGND 9 14 2 VM1 + 1A 1B PGND1 VM2 2A 2B PGND2 FUNCTION TABLE - In Stop mode (SEL = High) Excitation Direction - - H2R H2F - - H1R <3> <2> H1R H1F <4> <1> H1F - - H2R H2F - - IN1 L L L L L L L L H H H H H H H H IN2 L L L L H H H H L L L L H H H H IN3 L L H H L L H H L L H H L L H H IN4 L H L H L H L H L H L H L H L H H1 S S S S R R R R F F F F S S S S H2 S R F S H1 F S R F S S R F <4> <1> H2 R H2...