Continued from preceding page.
Pin No.
Symbol
16
FGOUT_D
Voltage
LB11993W
Equivalent Circuit Diagram
VCC1
30µA 30kΩ
16
Description
FG amplifier output.
8
OSC
9
FC1
4
FILTER
11
PGOUT_D
12
PGC
5µA 2.5µA
1kΩ
10µA
VCC1
Pin for connecting triangular wave oscillator
capacitor.
Serves for forced startup waveform
generation.
8
VCC1
2kΩ
Frequency characteristics.
Connecting a capacitor between this pin
and ground serves to prevent closed-loop
oscillation in the current control circuitry.
9
5kΩ 10kΩ
VCC1
30kΩ
25µA
1kΩ
1kΩ 1kΩ 1kΩ
62 61 59 4
VCC1
30µA 30kΩ
11
Connecting a capacitor between this pin
and ground activates the coil output
saturation prevention function.
In this condition, the VS pin is controlled for
motor voltage control.
By adjusting the external capacitor, torque
ripple compensation can be varied.
PG amplifier output.
6µA
1.5kΩ 75kΩ
VCC1
PG amplifier peak hold capacitor
connection.
10µA
10µA
200Ω
12
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No.A0677-11/15