LB11923V_06 SANYO [Sanyo Semicon Device], LB11923V_06 Datasheet - Page 12

• Manufacturer Part Number: LB11923V_06
• Description: Three-Phase Brushless Motor Driver
• Manufacturer: SANYO [Sanyo Semicon Device]

Continued from preceding page.
Pin No.
21
22
23
24
25
27
RF GND
FGOUT
FGIN
FGIN
CSD
Pin
C
+
–
Sets the operating time of the constrained-rotor protection
circuit.
Reference signal oscillator used when the clock signal is cut
off and to prevent malfunctions.
The protection function operating time can be set by
connecting a capacitor between this pin and ground.
This pin also functions as the logic circuit block power-on
reset pin.
FG amplifier input
FG amplifier output
This pin is connected to the FG Schmitt comparator circuit
internally in the IC.
Output current detection
Connect a resistor between this pin and ground.
VCO oscillator connection
This pin sets the VCO frequency.
Insert a capacitor between this pin and ground.
Set the value of the capacitor so that the oscillator
frequency does not exceed 1 MHz.
Functions
LB11923V
V CC 1
23
27
V CC 1
FG Schmitt comparator
V CC 1
V CC 1
500 Ω
V CC 1
Reset circuit
Equivalent circuit
300 Ω
Continued on next page.
300 Ω
500 Ω
500 Ω
No. 7498-12/20
21
FGOUT
22
24
25