bd6709fs ROHM Co. Ltd., bd6709fs Datasheet - Page 34

• Manufacturer Part Number: bd6709fs
• Description: Dc Brushless Motor Drivers For Cooling Fans Speed Controllable Single-phase Full-wave Dc Brushless Fan Motor Drivers
• Manufacturer: ROHM Co. Ltd.

GND
GND
Vcc
Vcc
1) Hall input terminal
GND
CS
LAIN
3) Output current detecting terminal
5) Reference voltage terminal
6) Oscillating capacitor connecting terminal
◎ BD6721FS
H+
Vcc
H-
1kΩ
Variable amplifier input terminal (thermistor connecting terminal)
Level amplifier input terminal
Level amplifier output terminal
Minimum rotating speed setting terminal
37.3kΩ
1k Ω
COSC
1kΩ
1kΩ
1kΩ
VREF
30kΩ
22kΩ
1kΩ
1k Ω
1kΩ
VTH
1kΩ
1kΩ
1k Ω
1kΩ
34/40
10.6kΩ
1k Ω
45Ω
45Ω
42kΩ
5kΩ
1kΩ
2) Motor output terminal
Output current detecting resistor connecting terminal
LAOUT
1kΩ
13kΩ
37kΩ
RNF
Vcc
4) FG output terminal or
AL output terminal
20Ω
1kΩ
FG or AL
OUT1
OUT2
30Ω
1kΩ
VMIN