Continued from preceding page.
Pin No. Symbol
21 FG+
Pin voltage
2.5V typ
22 FG–
LB1817M
Unit (resistance: Ω)
Equivalent circuit
Pin description
• FG amplifier positive pin.
• FG amplifier negative pin.
23 FG out
24 UOUT
25 UPB
26 VOUT
27 VPB
28
WOUT
29 WPB
30 UIN2
31 UIN1
32 VIN2
33 VIN1
34 W 2
IN
35 W 1
IN
36 HB
• FG amplifier output pin.
• U-phase output pin.
• Base connection pin for U-phase external
PNP.
• V-phase output pin.
• Base connection pin for V-phase external
PNP.
• W-phase output pin.
• Base connection pin for W-phase external
PNP.
• U-phase hall-effect input pin.
UIN1 > UIN2 is established when logic is at
an “H” level.
• V-phase hall-effect input pin.
VIN1 > VIN2 is established when logic is at
an “H” level.
• W-phase hall-effect input pin.
WIN1 > WIN2 is established when logic is at
an “H” level.
• Hall-effect bias applied to minus-side pin.
When stopped, switches open and hall-
effect bias severs.
No. 4355-7/9