LB11970FV-TLM-H Datasheet, PDF (4/7 Pages) ON Semiconductor – For Fan Motor Single-phase Full-wave Driver

Equivalent Circuit Diagram
LB11970FV
Thermal shat down
VCC
VM
6VREG
Constant voltage
FG
RMI
VTH
CPWM
Current control
circuit
P-IN
Delay circuit
1.25V
HB
Controller
HALL _IN+
IN-
Hysteresis
AMP
Charge/discharge
circuit
Delay circuit
Oscillation
SGND
CT _{P-IN RMI VTH}
WH WL ^CPWM
H: Rotation mode
L: Regeneration mode
Comparator
PGND
OUT
M
OUT
Truth Table
VTH
PIN
IN-
IN+
CT
OUT1
OUT2
FG
L
L
H
L
H
L
L
(OPEN)
L
L
H
L
H
OFF
L
L
H
L
OFF
L
L
H
L
L
H
L
OFF
OFF
-
H
H
L
OFF
L
L
L
-
H
L
H
L
OFF
OFF
-
-
H
L
H
OFF
L
L
-
-
L
H
H
L
OFF
VTH, P-IN = L means VTH, P-IN < CPWM VTH, P-IN = H means VTH, P-IN > CPWM
OFF
Mode
Running - drive
Running - regeneration
Output regeneration mode
with external signal
Lock protection
No.A0707-4/7