LV8112V Datasheet, PDF (10/13 Pages) Sanyo Semicon Device – Bi-CMOS IC For Polygon Mirror Motor 3-phase Brushless Motor Driver

LV8112V
Continued from preceding page.
Pin No. Pin name
Function
22 HB
Hall element bias current pin.
Goes ON when the S/S pin is in a start state.
Goes OFF when the S/S pin is in an stopped state.
VREG
Equivalent circuit
22
23 IN1+
24 IN1^−
25 IN2+
26 IN2^−
27 IN3+
28 IN3^−
Hall amplifier input pin.
A high level state of logic is recognized when IN+ > IN^−.
In reverse case is a low-level state.
The input amplitude of 100mVp-p or more (differential) is
desirable in the Hall sensor inputs.
If noise on the Hall inputs is a problem, that noise must be
excluded by inserting capacitors across the inputs.
VREG
24 26 28
500Ω
500Ω
23 25 27
29 SUB
30 GND2
32 OUT3
34 OUT2
36 OUT1
Frame ground pin. This pin is connected with the GND2 pin.
Ground pin of the output circuit block.
Output pin.
As for PWM, Duty control is executed on the upper- side
FET.
38 RF
39 RFS
Source pin of output MOSFET (lower-side).
Connect a low resistance (Rf) between this pin and GND.
Output current detection pin.
Connect to RF pin.
VCC
32 34 36
38
VREG
5kΩ
39
40 VCC2
41 VCC1
42 VG
Power supply pin.
Connect a capacitor between this pin and GND for
stabilization.
Power supply pin for control.
Charge pump output pin (Power supply for the upper side
FET gate).
Connect a capacitor between this pin and VCC.
43 CP1
44 CP2
Pin to connect a capacitor for charge pump.
Connect a capacitor between CP1 and CP2.
VCC
100Ω
500Ω
44
42
43
No.A1645-10/13