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