lb1854m Sanyo Semiconductor Corporation, lb1854m Datasheet - Page 5

• Manufacturer Part Number: lb1854m
• Description: Three-phase Brushless Motor Driver Ic
• Manufacturer: Sanyo Semiconductor Corporation

Continued from preceding page.
Pin No.
10
11
12
13
18
19
7
8
9
FG
FG
Symbol
W
U
V
V
GC
CL
OUT
OUT
R
CC
OUT
OUT
OUT
f
2
2
1
4.3 to 6.5 V
0 V min
V
0 V min
V
CC
CC
Pin voltage
2 max
2 max
Equivalent circuit
LB1854M
Output pins
Output transistor ground
Feedback can be applied to the control amplifier by
inserting resistor between this pin and GND and detecting
the output current as a voltage. The overcurrent
protection circuit (current limiter) operates by detecting
the voltage on this pin.
Power supply provided to all blocks other than the output
block
This voltage must be stabilized so that no ripple or other
noise is present.
The current limiter operates when the R
same potential as pin 12. The pin 12 potential is set up
externally.
Control input to output gain switching pin
High level (4 to 5 V): 34 dB
Middle level (2 to 3 V) or open: 40 dB (low speed):
34 dB (high speed)
Low level (0 to 1 V): 40 dB
However, note that this applies when V
FG Schmitt amplifier output
FG amplifier output
Function
Continued on next page.
CC
Unit (resistance: Ω)
f
pin reaches the
2 is 5 V.
No. 4476-5/6