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LB1976 Datasheet(PDF) 6 Page - ON Semiconductor

No. de pieza LB1976
Descripción Electrónicos  3-phase Brushless Motor Driver
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Fabricante Electrónico  ONSEMI [ON Semiconductor]
Página de inicio  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

LB1976 Datasheet(HTML) 6 Page - ON Semiconductor

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LB1976
No.6088-6/10
Continued from preceding page.
Pin No.
Pin name
Pin voltage
Function
Equivalent circuit
4
F/R
0.0V to VCC
Forward/reverse pin.
Low: forward
High or Open: reverse
Typical threshold voltage for
VCC = 5V:
approx. 2.8V (low to high)
approx. 2.3V (high to low)
4
3.8k
Ω
20k
Ω
VCC
6
7
8
OUT1
OUT2
OUT3
Output pin 1.
Output pin 2.
Output pin 3.
13
RF
0.0V to VCC
Output current detect pin.
Connect resistor Rf between this pin and
ground. Output current is limited to value set
with VRF/Rf. (Current limiter operation)
14
VM
Output block power supply.
6
200
Ω
VCC
7
8
14
13
0.5V
11
GND3
Output block ground.
15
12
GND1
GND2
Ground for blocks other than the output
block.
17
FG1
0.0V to VCC
Speed pulse output pin 1 with built-in pull-up
resistor.
16
FG2
0.0V to VCC
Speed pulse output pin 2 with built-in pull-up
resistor.
10k
Ω
VCC
16 17
22
23
20
21
18
19
IN1+
IN1-
IN2+
IN2-
IN3+
IN3-
1.5V to
VCC − 1.5V
Hall input pin.
IN+ > IN- : High input
IN+ < IN- : Low input
300
Ω
VCC
21
19
23
300
Ω
20
18
22
26
OSC
1.0V to VCC
This pin sets the PWM oscillation frequency.
Connect a capacitor between this pin and
ground.
2.1k
Ω
VCC
26
2V
200
Ω
94
μA
Continued on next page.


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