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BD6758MWV Datasheet(PDF) 10 Page - Rohm |
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BD6758MWV Datasheet(HTML) 10 Page - Rohm |
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10 / 33 page  BD6370GUL, BD6758MWV, BD6758KN Technical Note 10/32 www.rohm.co 2009.06 - Rev.A © 2009 ROHM Co., Ltd. All rights reserved. ● BD6370GUL Function Explanation 1) Power saving and Serial Reset (BD6370GUL; PS) (1) Function Explanation p.11/32 2) Control Input (BD6370GUL; INPUTx) (1) Function Explanation p.11/32 3) H-bridge (BD6370GUL; VM, OUTxA, OUTxB, and RNFx) (1) Function Explanation p.11/32 (2) The D/A Converter Settings of Constant-Voltage, Constant-Current, and Full-ON Mode p.11/32 4) Serial Input (BD6370GUL; STROBE, SCLK, and SDATA) (1) Function Explanation p.12/32 (2) Serial Register Bit Map p.12/32 5) Serial Register Data Bit Function (BD6370GUL) (1) Address Bit [000] Function Explanation p.13/32 to p.14/32 (2) Address Bit [001] Function Explanation p.15/32 (3) Address Bit [010] Function Explanation p.16/32 to p.17/32 (4) Address Bit [011] Function Explanation p.18/32 to p.19/32 (5) Address Bit [100] Function Explanation p.20/32 6) I/O Truth Table (BD6370GUL) p.21/32 to p.23/32 7) The More Precise Constant-Current Settings (BD6370GUL) p.24/32 to p.23/32 8) Application Control Sequence (BD6370GUL) (1) Stepping Motor drive controlled by 2 phases mode p.25/32 to p.26/32 Level Shift & Pre Driver 6bit DAC3 VDAC3 OUT3A OUT3B H bridge C.V./Full ON PGND PS VCC 1～100uF OUT1A OUT1B Level Shift & Pre Driver OUT2A OUT2B H bridge C.V./Full ON H bridge C.V./Full ON M RNF4 RRNFI4 1～100uF VM 6bit DACI4 VDACI4 Level Shift & Pre Driver RNF5 RRNF5 6bit DAC5 VDAC5 OUT4A OUT4B H bridge C.V./C.C./Full ON OUT5A OUT5B H bridge Const. Current GND Level Shift & Pre Driver 6bit DAC12 VDAC12 SCLK INPUT1 INPUT2 STROBE INPUT34 INPUT45 Logic12 SDATA Serial Interface Serial Interface Serial Interface Serial Interface Serial Interface Serial Interface Serial Interface Serial Interface Serial Interface Selector Serial Interface Logic3 Logic5 Logic4 Selector M BandGap TSD & UVLO 6bit DACV4 VDACV4 Serial Interface C4 D4 B4 D2 C2 E2 B3 D3 C3 E3 A4 A5 B5 C5 E4 E5 A2 B1 A1 A3 C1 D1 E1 D5 Power Save & Serial Reset Serial Interface Bypass filter Capacitor for power supply input. (p.29/32) Bypass filter Capacitor for power supply input. (p.29/32) The output current is converted to a voltage with the RNF5 external resistor. (p.11/32) Iout[A] = VDAC5[V]÷(RMETAL5[Ω]＋RRNF5[Ω]) Power-saving (p.11/32) H : Active L : Standby Motor control input (p.11/32) Fig.41 BD6370GUL Application Circuit Diagram Serial control input (p.12/32) Motor control input (p.11/32) The output current is converted to a voltage with the RNF4 external resistor. (p.11/32) Iout[A] = VDACI4[V]÷(RMETALI4[Ω]＋RRNFI4[Ω]) In the case of Const.-Voltage or Full-ON mode, no need to connect the RRNFI4. RMETAL5 =22mΩ (Typ.) RMETALI4 =4mΩ (Typ.) Resemblance drive mode (p.11/32) |
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