LB11696V Datasheet, PDF (7/17 Pages) Sanyo Semicon Device – Direct PWM Drive Brushless Motor Predriver IC

Continued from preceding page.
Pin No. Pin Name
LB11696V
Pin Description
V_CC
Equivalent circuit
10
11
12
13
14
15
IN1–
IN1+
IN2–
IN2+
IN3–
IN3+
Hall sensor inputs
A high-level state is recognized when IN+ > IN–, and a
low-level state is recognized under the reverse condition.
If noise on the Hall sensor signals becomes a problem,
insert capacitors between the IN+ and IN– inputs.
300 Ω
11 13 15
300 Ω
10 12 14
VREG
16
EI+
Control amplifier inputs
17
EI–
The PWMIN pin must be held at the low level for control
using this pin to function.
300 Ω
17
300 Ω
16
VREG
Control amplifier output
18
TOC
When the TOC pin voltage rises, the IC changes the UH,
VH, and WH output signal PWM duty to increase the
torque output.
VREG
Shared function pin: PWM oscillator frequency setting and
19
PWM
initial reset pulse generation
Insert a capacitor between this pin and ground.
A capacitor of 2000 pF sets a frequency of about 22 kHz.
18
300 Ω
40 kΩ
200 Ω
19
2 kΩ
Motor constraint detection output
20
RD This pin output is on when the motor is turning and off
when the constraint protection circuit operates.
VREG
20
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