BD6370GUL 查看數據表（PDF） - ROHM Semiconductor
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BD6370GUL Datasheet PDF : 33 Pages
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BD6370GUL, BD6758MWV, BD6758KN
Technical Note
●BD6370GUL Function Explanation
Bypass filter Capacitor for
power supply input. (p.29/32)
Power-saving (p.11/32)
H : Active
L : Standby
1～100uF
VCC
E3
Motor control input
(p.11/32)
PS B3 Power Save & Serial Reset
TSD & UVLO
Serial Interface
INPUT1 D3
INPUT2 C3
Serial Interface
Logic12
Level Shift
&
Pre Driver
Serial Interface
6bit DAC12 VDAC12
BandGap
H bridge
C.V./Full ON
H bridge
C.V./Full ON
A4
OUT1A
M
A5 OUT1B
B5 OUT2A
C5 OUT2B
M
Resemblance drive
mode (p.11/32)
Serial control input
(p.12/32)
Motor control input
(p.11/32)
Serial Interface
STROBE B4
SCLK D4
SDATA C4
Serial
Interface
Logic3
Serial Interface
Selector
Serial Interface
Logic4
INPUT34 D2
INPUT45 C2
Selector
Serial Interface
Serial Interface
Level Shift
&
Pre Driver
6bit DAC3 VDAC3
Level Shift
&
Pre Driver
6bit DACI4 VDACI4
6bit DACV4 VDACV4
Serial Interface
Logic5
Serial Interface
Level Shift
&
Pre Driver
6bit DAC5 VDAC5
H bridge
C.V./Full ON
D5 OUT3A
E4 OUT3B
E5 PGND
Bypass filter Capacitor for
power supply input. (p.29/32)
H bridge
C.V./C.C./Full ON
RMETALI4
=4mΩ (Typ.)
Serial Interface
H bridge
Const. Current
RMETAL5
=22mΩ (Typ.)
1～100uF
A3
VM
A2 OUT4A
B1 OUT4B
RNF4
A1
RRNFI4
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.
C1
OUT5A
D1 OUT5B
RNF5
E1
RRNF5
E2
GND
Fig.41 BD6370GUL Application Circuit Diagram
The output current is converted to a voltage
with the RNF5 external resistor. (p.11/32)
Iout[A] = VDAC5[V]÷(RMETAL5[Ω]＋RRNF5[Ω])
1) Power saving and Serial Reset (BD6370GUL; PS)
(1) Function Explanation
2) Control Input (BD6370GUL; INPUTx)
(1) Function Explanation
3) H-bridge (BD6370GUL; VM, OUTxA, OUTxB, and RNFx)
(1) Function Explanation
(2) The D/A Converter Settings of Constant-Voltage, Constant-Current, and Full-ON Mode
4) Serial Input (BD6370GUL; STROBE, SCLK, and SDATA)
(1) Function Explanation
(2) Serial Register Bit Map
5) Serial Register Data Bit Function (BD6370GUL)
(1) Address Bit [000] Function Explanation
(2) Address Bit [001] Function Explanation
(3) Address Bit [010] Function Explanation
(4) Address Bit [011] Function Explanation
(5) Address Bit [100] Function Explanation
6) I/O Truth Table (BD6370GUL)
7) The More Precise Constant-Current Settings (BD6370GUL)
8) Application Control Sequence (BD6370GUL)
(1) Stepping Motor drive controlled by 2 phases mode
p.11/32
p.11/32
p.11/32
p.11/32
p.12/32
p.12/32
p.13/32 to p.14/32
p.15/32
p.16/32 to p.17/32
p.18/32 to p.19/32
p.20/32
p.21/32 to p.23/32
p.24/32 to p.23/32
p.25/32 to p.26/32
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10/32
2009.06 - Rev.A
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