LB1975_08 SANYO [Sanyo Semicon Device], LB1975_08 Datasheet - Page 5

• Manufacturer Part Number: LB1975_08
• Description: For Fan Motor 3-phase Brushless Motor Driver
• Manufacturer: SANYO [Sanyo Semicon Device]

Block Diagram and Peripheral Circuit
Pin Functions
Pin No.
1
2
3
V CC
V REG
S/S
V CC
V CTL
Pin name
H
H
H
V CTL
4.5V to 6.7V
0.0V to 7.3V
0.0V to V CC
Pin voltage
V CC
IN1
IN2
IN3
V REG
V CREF
40kΩ
Hys.Amp
Reg
V CTL Amp
2.35V
S/S
31kΩ
Power supply for blocks other than the
output block.
Shunt regulator output pin (7V).
Start/stop control pin.
Low: start
High or Open: stop
Typical threshold voltage for
V CC = 5V:
approx. 2.8V (low to high)
approx. 2.3V (high to low)
V COUT
F/R
Logic
PWM
OSC
OSC
Function
FG1 FG2
LB1975
LVDS
GND1
GND2
Current
Limiter
TSD
GND3
V CC
0.5V
V M
OUT1
OUT2
OUT3
RF
Equivalent circuit
Continued on next page.
2
V M
3.8kΩ
20kΩ
No.6087-5/10
3