LB1980H_07 SANYO [Sanyo Semicon Device], LB1980H_07 Datasheet - Page 4

• Manufacturer Part Number: LB1980H_07
• Description: For VCR Capstan Motors 3-Phase Brushless Motor Driver
• Manufacturer: SANYO [Sanyo Semicon Device]

Block Diagram
CTLREF
W IN +
U IN +
V IN +
W IN -
U IN -
V IN -
GND
V CC
CTL
LIM
FR
15
16
17
18
19
20
11
12
13
21
6
7
About 0.435V CC
+
+
+
W
Forward /
reverse
selection
U
V
+
Control
amplifier
Bandgap 1.2V
Reference
voltage
LIMREF
+
+
TSD
FC
distribution and
14
torque ripple
Differential
correction
block
LB1980H
Antilogarithm
conversion
distribution
+
differential
Upper side
prevention
saturation
control
and
Feedback
amplifier
gm
FG amplifier
+
+
gm
+
Output stage
W
U
V
Drive distribution circuit
and lower side saturation
prevention circuit
22
27
28
24
23
10
1
4
5
8
9
No.5974-4/7
Rf(SENSE)
GSENSE
FG IN -
FG IN +
ADJ
FG OUT
V S
U OUT
V OUT
W OUT
Rf(PWR)