Stepping Motor Driver Series Standard 36V Stepping Motor Drivers No.12009EAT11 BD63940EFV, BD63960EFV Description BD63940EFV,BD63960EFV are the ultra simple type that provides the minimum function for driving stepping motor and various protection circuits. As for its basic function, it is a low power consumption bipolar PWM constant current-drive driver with power supplys rated voltage of 36V and rated output current of 1.2A, 1.5A, and each driver is pin-compatible so that replacement can be done easily. Also it makes -STEP drive possible by inputting external DAC signal so that it provides wider application area. There are excitation modes of FULL STEP & HALF STEP mode. This series contributes to reduction of mounting area, cost down, safety design. Feature 1) Power supply: one system drive (rated voltage of 36V) 2) Rated output current: 1.2A, 1.5A 3) Low ON resistance DMOS output 4) Parallel IN drive mode 5) 2ch drive DC motor 6) PWM constant current control (self oscillation) 7) Built-in spike noise cancel function (external noise filter is unnecessary) 8) FULL STEP applicable to HALF STEP 9) Applicable to step drive 10) Forward/reverse break mode for DC motor 11) Power save function 12) Built-in logic input pull-down resistor 13) Power-on reset function 14) Thermal shutdown circuit (TSD) 15) Over current protection circuit (OCP) 16) Under voltage lock out circuit (UVLO) 17) Over voltage lock out circuit (OVLO) 18) Malfunction prevention at the time of no applied power supply (Ghost Supply Prevention) 19) Electrostatic discharge: 4kV (HBM specification) 20) Microminiature, ultra-thin and high heat-radiation (exposed metal type) HTSSOP package 21) Pin-compatible line-up Application Laser beam printer, Scanner, Photo printer, FAX, Ink jet printer, Mini printer, Sewing machine, Toy, and Robot etc. www.rohm.com 2012.02 - Rev.A 1/8 2012 ROHM Co., Ltd. All rights reserved. Technical Note BD63940EFV, BD63960EFV Absolute maximum ratings(Ta=25) Item Symbol BD63940EFV BD63960EFV Unit Supply voltage V -0.2+36.0 V CC1,2 1 1.1 Power dissipation Pd W 2 4.0 Input voltage for control pin V -0.2+5.5 V IN RNF maximum voltage V 0.5 V RNF 3 3 Maximum output current I 1.2 1.5 A/phase OUT Operating temperature range T -25+85 opr Storage temperature range T -55+150 stg Junction temperature T +150 jmax 1 70mm70mm1.6mm glass epoxy board. Derating in done at 8.8mW/ for operating above Ta=25. 2 4-layer recommended board. Derating in done at 32.0mW/ for operating above Ta=25. 3 Do not, however exceed Pd, ASO and Tjmax=150. Operating conditions(Ta= -25+85) Item Symbol BD63940EFV BD63960EFV Unit Supply voltage V 1928 V CC1,2 4 4 Output current (DC) I 0.9 1.2 A/phase OUT 4 Do not however exceed Pd, ASO. Electrical characteristics Applicable to all the series (Unless otherwise specified Ta=25, V =24V) cc1,2 Limit Item Symbol Unit Condition Min. Typ. Max. Whole Circuit current at standby I - 0.6 2.0 mA PS=L CCST Circuit current I - 2.7 7.0 mA PS=H, VREF=0.4V CC Control input (IN1A, IN1B, IN2A, IN2B, PS) H level input voltage V 2.0 - - V INH L level input voltage V - - 0.8 V INL Output (OUT1A, OUT1B, OUT2A, OUT2B) Output ON resistance I =0.7A OUT R - 1.4 1.8 ON (BD63940EFV) Sum of upper and lower Output ON resistance I =1.0A OUT R - 1.1 1.4 ON (BD63960EFV) Sum of upper and lower Output leak current I - - 10 A LEAK Current control RNFX input current I -40 -20 - A RNFX=0V RNFX VREFX input current I -2.0 -0.1 - A VREFX=0V VREF VREFX input voltage range V 0 - 0.4 V REF Comparator offset V -20 0 20 mV VREFX=0.4V COFS Minimum on time T 0.3 0.7 1.2 s R=39k, C=1000pF ONMIN www.rohm.com 2012.02 - Rev.A 2/8 2012 ROHM Co., Ltd. All rights reserved.