LB11922_08 Datasheet, PDF (10/15 Pages) Sanyo Semicon Device – For OA Products Three-Phase Brushless Motor Driver

LB11922
Continued from preceding page.
Pin No.
19
20
Pin name
FGIN-
FGIN+
Function
FG amplifier inputs.
FGIN- : FG amplifier inverting input
FGIN+ : FG amplifier noninverting input
Insert capacitors between these
pins (which have a potential of 1/2
VCC) and ground.
VCC
500Ω
20
Equivalent circuit
500Ω
FGOUT
500Ω
19
21
RFGND Output current detection.
Connect a resistor between this pin and
ground.
VCC
21
22
RF
Output current detection.
Connect a resistor between this pin and
VCC
ground.
The output limitation maximum current, IOUT,
is set to be 0.26/Rf by this resistor.
22
23
GND
Ground connection.
24
UL
Outputs (that are used to drive external
25
UH
transistors).
26
VL
These are push-pull outputs.
27
VH
The PWM duty is controlled on the UH, VH, and
28
WL
WH side of these outputs.
29
WH
VCC
30
VCC
Power-supply voltage.
Connect a capacitor between this pin and
ground for power supply stabilization.
31
IN3-
Hall-effect device inputs.
32
IN3+
The input is seen as a high-level input when
VCC
33
IN2-
IN+ > IN-, and as a low-level input for the
34
IN2+
opposite state.
35
IN1-
If noise on the Hall-effect device signals is a
36
IN1+
problem, insert capacitors between the
corresponding IN+ and IN- inputs.
The logic high state indicates that VIN+ > VIN-. _{32 34 36}
500Ω
14
NC
These are unconnected pins, and can be used
17
for wiring.
24 26 28
25 27 29
500Ω
31 33 35
No.7497-10/15