LB1876_09 SANYO [Sanyo Semicon Device], LB1876_09 Datasheet - Page 7

• Manufacturer Part Number: LB1876_09
• Description: For Polygon Mirror Motors 3-phase Brushless Motor Driver
• Manufacturer: SANYO [Sanyo Semicon Device]

Continued from preceding page.
Pin No.
16
17
18
19
20
21
FGFIL
CSD
PH
TOC
EO
EI
Pin name
FG filter pin.
If noise on the FG signal is a problem, insert a capacitor
(under about 2200pF) between this pin and ground.
Restraint protection circuit operating time setting pin/reset
pulse setting pin.
A protection operating time of about 8 seconds can be set by
connecting a capacitor (about 0.068µF) between this pin
and ground. If the protection circuit is not used, connect a
capacitor and resistor (about 4700pF, 220kΩ) in parallel
between this pin and ground.
RF waveform smoothing pin.
If noise on the RF signal is a problem, insert a capacitor
between this pin and ground.
Torque specifying input pin.
Normally, this pin is connected to the EO pin.
When the TOC voltage falls, the on duty of the lower side
transistor increases.
Error amplifier output pin.
Error amplifier input pin.
Function
LB1876
VREG
VREG
VREG
VREG
VREG
VREG
Equivalent curcuit
40kΩ
Continued on next page.
300Ω
300Ω
300Ω
500Ω
20
16
21
19
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17
18