LB11873 Datasheet, PDF (6/14 Pages) Sanyo Semicon Device – Monolithic Digital IC For Polygonal Mirror Motors Three-Phase Brushless Motor Driver

LB11873
Internal Equivalent Circuit Block Diagram and External Reference Circuit
TM
PWM
PD
TSD
PWM
OSC
CSD
CSD
OSC
Count
VREG
EI
-
S/S
S/S
+
EO
BRSEL
LD
CLK
FGS
FGFIL
BRSEL
LD
PLL
CLK
FG
Filter
-
-
+
+
Hall amplifier
COMP
CONT
AMP
Peak
hold
FCP
PH
Control
circuit
VREG
VREG
CURR
LIM
Driver
VCC _Rf
VM
OUT1
OUT2
HB
OUT3
IN1+ IN1- IN2+ IN2- IN3+ IN3- _HB
VREG
FCS
GND2 GND1
VCC
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