lb11681h Sanyo Semiconductor Corporation, lb11681h Datasheet - Page 7

• Manufacturer Part Number: lb11681h
• Description: Pwm Three-phase Brushless Motor Driver
• Manufacturer: Sanyo Semiconductor Corporation

Continued from preceding page.
Pin No.
13
14
15
17
19
Symbol
LCK
F/R
FG
VR
LD
FG pulse output pin (Open collector output)
Provides one Hall effect sensor equivalent FG
output)
When the FG output is necessary, connect a pull-
up resistance with this pin.
Simplified power supply output pin.
Connect a capacitor between this pin and GND.
This pin is connected with power supply of the
small signal system circuit in IC.
Pin to switch the rotating mode in spindle motor
Do not apply a voltage above the voltage of the
VR pin.
Switch F / R when the motor has stopped.
Lock protection circuit timing setting pin.
Connect a capacitor between this pin and GND.
As the capacity increase,
the time of lock detection / release setting can be
lengthened
Lock detection output pin (Open collector output)
The LD output goes to the high level during lock
protection
When LD output is necessary, connect a pull-up
resistance with this pin
block.
Pin Description
LB11681H
VR
15
VM
VR
VR
VR
Equivalent Circuit
40kΩ
Continued on next page.
1kΩ
1kΩ
19
13
14
No.A0665-7/11
17