Motor Drivers for Printers System Driver for Ink Jet Printers No.10016EAT03 BD64550EFV Description This is 1-chip system motor driver integrating 2-channel H-bridge driver, step-down switching regulator with built-in power DMOS, series regulator and reset output. Features 1) Low-on resistance output H-bridge driver (2-channel) 2) Constant-current chopping drive H-bridge driver 3) Switching regulator with built-in P-channel power DMOS FET 4) Soft start function: 23.6 ms (Typ.) 5) Reset release timer: 80 ms (Typ.) 6) 16 bit serial interface 7) Logic input interface (serial/parallel changeable) 8) Ultra thin type high heat dissipation HTSSOP-B40 package 9) Overcurrent protection in H-bridge driver block 10) Input voltage low voltage protection in H-bridge driver block 11) Overcurrent protection in switching regulator block 12) Output overvoltage protection in switching regulator block 13) Output low voltage protection in switching regulator block 14) Thermal shutdown Applications Inkjet printer, photo printer, etc. Absolute Maximum Ratings (Ta=25) Parameter Symbol Ratings Unit VM applied voltage 40 V V M Logic input voltage V -0.4 ~ 5.5 V L RIN applied voltage V 5.5 V RIN RNF voltage V 0.5 V RNF Power dissipation Pd 1600* mW Operating temperature range T -25 ~ +85 OPR T Storage temperature range -55 ~ +150 STG Junction temperature T 150 jmax Motor driver output current (peak 500 ns) I (peak) 8.0 A omax Motor driver output current (DC) I (DC) 2.5** A omax Switching regulator output current (DC) 0.5 A I omax Series regulator output current (DC) I 0.25 A omax * Reduced by 12.8 mW/ over 25 , when mounted on a glass epoxy board (70 mm x 70 mm x 1.6 mm). ** Must not exceed Pd or ASO. Operating Conditions Parameter Symbol Limit Unit VM operating power supply voltage range V 7 ~ 36 V M SCLK max. operating frequency F 20 MHz SCLK Switching regulator output voltage range V 3 ~ 5 V swreg www.rohm.com 2010.06 - Rev.A 1/16 2010 ROHM Co., Ltd. All rights reserved. BD64550EFV Technical Note Electrical Characteristics (Unless otherwise specified,Ta=25,V =24V) M Limit Parameter Symbol Unit Conditions Min. Typ. Max. Overall VM current 1 I - - 8 mA V =7V VM1 M VM current 2 I - - 12 mA V =24V VM2 M H-bridge 1 Output on resistance (source side)) R - 0.6 0.78 I =1A ONH1 o Output on resistance (sinking side) R - 0.4 0.52 I =1A ONL1 o Output leak current I 0 - 10 A V =36V LEAK1 M Built-in diode forward direction voltage V 0.6 0.9 1.2 V I =1A FH1 o (source side) Built-in diode forward direction voltage V 0.6 0.9 1.2 V I =1A FL1 o (sinking side) H-bridge 2 Output on resistance (source side) R - 0.7 0.91 I =1A ONH2 o Output on resistance (sinking side) R - 0.5 0.65 I =1A ONL2 o Output leak current I 0 - 10 A V =36V LEAK2 M Built-in diode forward direction voltage V 0.6 0.9 1.2 V I =1A FH2 o (source side) Built-in diode forward direction voltage V 0.6 0.9 1.2 V I =1A FL2 o (sinking side) Current control VREF voltage range V 0.8 - 3.5 V REF VREF pin outflow current I - 0 1 A REF RNF pin outflow current I 5 15 30 A RNF RNFS pin outflow current I - 0 1 A RNFS VREF-RNFS offset voltage V -15 0 15 mV VREF=2V OFFSET Control logic High input voltage V 2.0 - 5.5 V INH Low input voltage V 0 - 0.8 V INL Input current I 21 33 45 A Input voltage=3.3V IN Switching power source DSEN threshold voltage V 0.873 0.9 0.927 V SWBIAS Output on resistance R - 0.8 1.04 At I =250mA SWON o Leak current I 0 - 10 A V =36V SWLEAK M DUTY MAX value D - 92 - % MAX Clock frequency F 130 200 270 kHz SW DSEN pin outflow current I - 0 1 A DSEN Series power source Output voltage V 1.425 1.5 1.575 V At I =70mA SOUT o Leak current I 0 - 10 A SLEAK RESET pin Output voltage V 0 - 0.2 V I =1mA RSTL DRAIN Leak current I 0 - 10 A RSTLEAK High VM threshold voltage V 6.3 6.5 6.7 V V at power on MPORH M Low VM threshold voltage V 5.9 6.1 6.3 V V at power off MPORL M High motor UVLO voltage V 13.5 15 16.5 V Off motor only MMTH Low motor UVLO voltage V 12.5 14 15.5 V MMTL Reset delay time T 50 80 110 ms POR www.rohm.com 2010.06 - Rev.A 2/16 2010 ROHM Co., Ltd. All rights reserved.