LB11693JH Datasheet, PDF (8/12 Pages) Sanyo Semicon Device – Monolithic Digital IC 24V Fan Motor Driver IC

LB11693JH
Continued from preceding page.
Pin
Symbol
No.
Pin Description
25
PWM
PWM oscillator frequency setting.
Connect a capacitor between this pin and ground.
A frequency of about 20kHz can be set by using
a 2200pF capacitor.
VREG
Equivalent Circuit
200Ω
25
26
GND1 Ground
(For circuits other than the motor drive output system)
28
IN1+
Hall effect sensor inputs
27
IN1-
High when IN+ > IN-, low for the reverse state.
VREG
30
IN2+
Signal inputs with an amplitude (differential) of at least
29
IN2-
50mVp-p are desirable for the Hall inputs.
32
IN3+
If noise is a problem, connect capacitors between
31
IN3-
the IN+ and IN- inputs.
300Ω
27 29 31
300Ω
28 30 32
33
F/R
Forward/reverse control
Low: forward, high or open: reverse.
VREG
1,3
5,6
13,19
24,35
NC
No connection.
The NC pins may be used for wiring connections.
FRAME
Frame connection
The FRAME pin is connected internally to the IC surface
metal parts. Both must be used in the electrically open
state.
3.5kΩ
33
No.A0606-8/12