Stepping Motor Driver series Micro step 36V Stepping Motor Drivers BD63843EFV, BD63847EFV No.12009EAT08 Description BD63843EFV / BD63847EFV are stepping motor drivers of 1/16 micro step(sixteenth step) drive. As for its basic function, it is a low power consumption bipolar PWM constant current-drive driver with power supply rated voltage of 36V and rated output current (DC) of 1.0A, 2.0A. The input interface is CLK-IN type. There are step modes of Full step & Half step, Eighth step, Sixteenth step mode by internal DAC (D-A converter), and for current decay mode, the ratio of FAST DECAY & SLOW DECAY can be freely set, so the optimum control conditions for every motor can be realized. In addition, being able to drive with one system of power supply makes contribution to the set designs getting easy. Feature 1) Single power supply input (rated voltage of 36V) 2) Rated output current:(DC) 1.0A, 2.0A 3) Low ON resistance DMOS output 4) CLK-IN drive mode 5) PWM constant current control (other oscillation) 6) Built-in spike noise cancel function (external noise filter is unnecessary) 7) Full step, Half step, Eighth step, Sixteenth step drive 8) Timing free for changing step modes 9) Current decay mode switching function (linearly variable FAST/SLOW DECAY ratio) 10) Normal rotation & reverse rotation switching function 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) Ghost Supply Prevention (protects against malfunction when power supply is disconnected) 19) Electrostatic discharge: 8kV (HBM specification) 20) Adjacent pins short protection 21) Inverted mounting protection 22) Microminiature, ultra-thin and high heat-radiation (exposed metal type) HTSSOP-B28 package 23) Pin-compatible line-up (In addition, pin-compatible to BD6387EFV series) Application PPC, multi-function printer, laser beam printer, ink jet printer, monitoring camera, WEB camera, sewing machine, photo printer, FAX, scanner, mini printer, toy, and robot etc. www.rohm.com 2012.02 - Rev.A 1/8 2012 ROHM Co., Ltd. All rights reserved. Technical Note BD63843EFV, BD63847EFV Absolute maximum ratings (Ta=25C) Item Symbol BD63847EFV BD63843EFV Unit Supply voltage V -0.3~+36.0 V CC1,2 1 1.45 W Power dissipation Pd 2 4.70 W Input voltage for control pin V -0.3~+7.0 V IN RNF voltage V 0.7 V RNF 3 3 Output current I 2.0 1.0 A/phase OUT 4 3 3 Output current (peak) I 2.5 1.5 A/phase OUTPEAK Operating temperature range T -25~+85 C opr Storage temperature range T -55~+150 C stg Junction temperature T +150 C jmax 1 70mm70mm1.6mm glass epoxy board. Derating in done at 11.6mW/C for operating above Ta=25C. 2 4-layer recommended board. Derating in done at 37.6mW/C for operating above Ta=25C. 3 Do not, however exceed Pd, ASO and Tjmax=150C. 4 Pulse width tw1ms, duty20%. Operating conditions (Ta= -25~+85C) Item Symbol BD63847EFV BD63843EFV Unit Supply voltage V 19~28 V CC1,2 Input voltage for control pin V 0~5.5 V IN 5 5 Output current I 1.7 0.7 A/ OUT 5 Do not, however exceed Pd, ASO. Electrical characteristics (Unless otherwise specified Ta=25C, V =24V) CC1,2 Limit Item Symbol Unit Condition Min. Typ. Max. Whole Circuit current at standby I - 1.0 2.5 mA PS=L CCST Circuit current I - 2.5 5.0 mA PS=H, VREF=3V CC Control input (CLK, CW CCW, MODE0, MODE1, ENABLE, PS) H level input voltage V 2.0 - - V INH L level input voltage V - - 0.8 V INL H level input current I 35 50 100 A V =5V INH IN L level input current I -10 0 - A V =0V INL IN Output (OUT1A, OUT1B, OUT2A, OUT2B) I =1.5A, OUT Output ON resistance (BD63847EFV) R - 0.85 1.10 ON Sum of upper and lower I =0.5A, OUT Output ON resistance (BD63843EFV) R - 1.90 2.47 ON Sum of upper and lower Output leak current I - - 10 A LEAK Current control RNFXS input current I -2.0 -0.1 - A RNFXS=0V RNFS RNFX input current I -40 -20 - A RNFX=0V RNF VREF input current I -2.0 -0.1 - A VREF=0V VREF VREF input voltage range V 0 - 3.0 V REF MTH input current I -2.0 -0.1 - A MTH=0V MTH MTH input voltage range V 0 - 3.5 V MTH Minimum on time (Blank time) t 0.3 0.8 1.5 s C=1000pF, R=39k ONMIN Comparator threshold 1 V 0.570 0.600 0.630 V VREF=3V, 100% CTH1 Comparator threshold 2 V 0.403 0.424 0.445 V VREF=3V, 70.71% CTH2 Comparator threshold 3 V 0.196 0.230 0.264 V VREF=3V, 38.27% CTH3 www.rohm.com 2012.02 - Rev.A 2/8 2012 ROHM Co., Ltd. All rights reserved.