LB11923V Datasheet, PDF (13/20 Pages) Sanyo Semicon Device – Three-Phase Brushless Motor Driver

Continued from preceding page.
Pin No.
Pin
LB11923V
Functions
Output current detection
Connect a resistor between this pin and ground.
28
RF
The output limitation maximum current, I_OUT, is set to be
0.26/R_f by this resistor.
VCC1
Equivalent circuit
28
29
GND1 Control block ground
30
GND2 Output block ground
31
UL
32
33
34
35
UH
VL
VH
WL
Outputs (that are used to drive external transistors).
The PWM duty is controlled on the UH, VH, and WH side of
these outputs.
36
WH
VCC2
Output block power supply
37
V_CC2 Control block power supply
38
V_CC1
Short V_CC1 to V_CC2 and, for stability, insert a capacitor
between these pins and ground.
VCC1
39
IN3^–
Hall-effect device inputs.
40
IN3⁺
The input is seen as a high-level input when IN⁺ > IN^–, and
41
IN2^–
as a low-level input for the opposite state.
42
43
IN2⁺
IN1^–
If noise on the Hall-effect device signals is a problem, insert
capacitors between the corresponding IN⁺ and IN^– inputs.
40 42 44
500 Ω
44
IN1⁺
The logic high state indicates that V_IN+ > V_IN–
12
18
NC
These are unconnected pins, and can be used for wiring.
26
31 33 35
32 34 36
500 Ω
39 41 43
No. 7498-13/20