bh6799fvm ROHM Co. Ltd., bh6799fvm Datasheet - Page 8

• Manufacturer Part Number: bh6799fvm
• Description: Dc Brushless Motor Driver Series For Cooling Fans Low-voltage Single-phase Full-wave Dc Brushless Fan Motor Drivers
• Manufacturer: ROHM Co. Ltd.

●Truth table
Incorporates soft switching
function. Adjust at an optimum
value because gradient of
switching of output waveform
depends on hall element output.
P.10
◎BD6989FVM
◎BH6779FVM,BH6789FVM
◎BH6766FVM
◎BH6766FVM
H+
H+
H+
H
H
H
H
L
L
L
L
PIN No.
H-
H-
H-
1
2
3
4
5
6
7
8
H
H
H
H
L
L
L
L
HALL
H(OPEN)
H(OPEN)
OUT1
OUT1
PWM
Terminal name
H
H
L
L
L
L
OUT2
OUT1
GND
OUT2
Vcc
1
2
3
4
HB
FG
H+
H-
H+
HB
H-
OUT1
OUT2
OUT2
H
H
H
L
L
L
L
L
Bias
Hall
500Ω
500Ω
Motor output terminal 2
Hall input terminal+
Hall bias terminal
Hall input terminal-
FG signal output terminal
Power supply terminal
Motor output terminal 1
GND terminal
+
-
H(Output Tr：OFF)
H(Output Tr：OFF)
L(Output Tr：ON)
L(Output Tr：ON)
OUT2
8/16
H
L
L
L
TSD
+
+
-
-
150kΩ
150kΩ
FG
FG
H(Output Tr：OFF)
H(Output Tr：OFF)
L(Output Tr：ON)
L(Output Tr：ON)
GND
OUT1
Vcc
FG
8
7
6
5
Function
FG
M
TSD:
Thermal shutdown (heat rejection circuit)
This is an open collector
output. Connect a pull-up
resistor.
P.13
Take a measure against Vcc
voltage rise due to reverse
connection of power supply
and back electromotive force.
P.12