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PDF LB1854M Datasheet ( Hoja de datos )

Número de pieza LB1854M
Descripción Three-Phase Brushless Motor Driver IC
Fabricantes Sanyo 
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LB1854M datasheet

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LB1854M pdf
Continued from preceding page.
Pin No. Symbol
Pin voltage
7 UOUT
8 VOUT
9 WOUT
10 Rf
11 VCC2 4.3 to 6.5 V
0 V min
12 CL VCC2 max
LB1854M
Equivalent circuit
Function
Unit (resistance: )
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 Rf pin reaches the
same potential as pin 12. The pin 12 potential is set up
externally.
0 V min
13 GC VCC2 max
18 FGOUT2
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 VCC2 is 5 V.
FG Schmitt amplifier output
19 FGOUT1
FG amplifier output
Continued on next page.
No. 4476-5/6

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