AN8267S Ver la hoja de datos (PDF) - Panasonic Corporation
Número de pieza
componentes Descripción
Fabricante
AN8267S Datasheet PDF : 5 Pages
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s Supplementary Explanation (Cont.)
The Pin3 is switched over in synchronization with coil cur-
rent supply/stop.
1. Coil current ON :
L
2. Coil current OFF : H
The maximum applied voltage for both Pins2 and 3 is 55V.
5. TSD (Thermal Shut Down)Pin5
The AN8267S incorporates the overheat protective circuit.
If the chip temperature of the IC reaches 150˚C (typ.), the
coil current stops. Since the Pin5 is a TSD circuit operation
checking pin, leave it “open” when the motor is driving nor-
mally.
6. Hall input Pins1 and 16
Input a sine wave signal from the Hall element to the Pins1
and 16.
The input DC voltage of those pins should be 2Vmin. or
more.
It is recommended to connect the Hall element and DC
bias resistor between the Pins1 and GND.
The Hall element sine wave signal Vi to be input to the
Pins1 and 16 should be ; 15mVp–p<= Vi<= 400mVp–p
Hall Element
14
1 AN8267S
16
R : DC Bias Resistor
Fig.7
7. Precautions for wiring
When mounting the AN8267S onto the PCB, pay attention
to the following points as to its wiring.
Counterflow Preventive Diode
Hall Element
IC Power Supply
Separate
14
1
16
13
12
11
AN8267S
4
8
GND
Coil Power Supply
6
10
PGND
Separate
Fig.8
• power line
The power pin of the AN8267S is the Pin12. Separate it
from the power line to the moter coil. Wiring to the motor
coil should be made as thick and short as possible.
• GND line
The AN8267S has two GND Pins (8 and 13). Since the
Pin8 serves as the GND pin for the coil output power transis-
tor, separate from GND of the Pin13 as much as possible.
Wiring to the Pin8 should be also as thick and short as possi-
ble.
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