LV8121V SANYO [Sanyo Semicon Device], LV8121V Datasheet - Page 7

• Manufacturer Part Number: LV8121V
• Description: For Fan Motor 3-phase Brushless Motor Driver
• Manufacturer: SANYO [Sanyo Semicon Device]

Continued from preceding page.
Pin No.
12, 33
20, 21
22, 23
24, 25
15, 30
18, 27
14
34
31
35
37
Pin name
F/R
V CC 1
V CC 2
OUT3
OUT2
OUT1
RF
GND2
RFS
VG
CP2
Forward / Reverse control pin.
Low : 0V to 1.0V
High : 2.0V to VREG
Goes high when left open.
Low for forward.
The hysteresis width is about 0.35V.
Power supply pin.
(For systems other than the motor drive output.)
Connect a capacitor between this pin and GND1 for
stabilization.
Motor drive output power supply pins.
Motor drive output pins.
Source pins of the lower side output FET.
Connect a resistor (Rf) between these pins and
GND.
Motor drive output circuit GND pins.
Output current detection pin.
Connect the RFS pin to the RF pin.
Charge pump output pin.
Connect a capacitor between this pin and V CC 2.
Pin to connect the capacitor for charge pump.
Connect a capacitor between this pin and CP1.
Function
LV8121V
VREG
VREG
V CC 2
35
V CC 2
Equivalent circuit
300Ω
100kΩ
10kΩ
Continued on next page.
5kΩ
12 33
20 21
22 23
24 25
18 27
15 30
No.A2135-7/14
37
14
31