an8267s Panasonic Corporation of North America, an8267s Datasheet

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an8267s

Manufacturer Part Number
an8267s
Description
Fan Motor Driver
Manufacturer
Panasonic Corporation of North America
Datasheet
AN8267S
Fan Motor Driver
for internally cooling or blowing the air to the office automa-
tion equipments and measuring equipmennts.
For drive of brush-less DC fan motor
The AN8267S is an IC to drive the brushless DC fan motors
Operating supply voltage range ; V
(Operable at V
2-phase half-wave drive, built-in power transistor
Built-in lock protective function and automatic reset function
Built-in thermal protective circuit (operating temperature:
150˚C typ.)
Built-in rotation display function
Overview
Features
Application
Block Diagram
IN (+)
IN (–)
TSD
CC
V
=6V to 9.6V as well)
S
14
16
1
5
GND
13
+
Hall
Amp.
Hall Bias
TSD
CC
=9.6 to 27.6V
RD
2
Revolution
Display
Lock Protect
Automatic Reset
V
1
12
CTRL
CC
RD
C
4
3
2
B
7
OUT
1
6
1
1.16-pin PANAFLAT Plastic Package (SOP016-P-0300)
B
9
2
(0.4)
OUT
1
2
3
4
5
6
7
8
10
2
11
8
5.5 0.3
7.6 0.3
PGND
VM
16
15
14
13
12
11
10
9
Unit : mm

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an8267s Summary of contents

Page 1

... AN8267S Fan Motor Driver Overview The AN8267S drive the brushless DC fan motors for internally cooling or blowing the air to the office automa- tion equipments and measuring equipmennts. Features • Operating supply voltage range ; V =9.6 to 27.6V CC (Operable at V =6V to 9.6V as well) CC • 2-phase half-wave drive, built-in power transistor • ...

Page 2

Absolute Maximum Ratings (Ta=25˚C) Parameter Supply voltage Supply current Output current (t=0.1s ) Circuit current (Inflow current) Circuit voltage (Applied voltage) Power dissipation Operating ambient temperature Storage temperature Note 1) When mounted to the glass epoxy PCB 50 50 0.8mm ...

Page 3

... P. GND Power ground Supplementary Explanation • Precautions for Using the AN8267S Observe the following in order to use the AN8267S safely and properly. Operating supply voltage range : 9.6V to 27.6V 1. Maximum applied voltage to the coil output Pins6 and 10 When driving the motor, the counter electromotive power of the coil is applied to the coil output Pins6 and 10 when the output transistor is turned off ...

Page 4

... Steep Rise Gentle Rise Fig.4 3. AN8267S lock protection When the motor fan is locked, the AN8267S has a function to protect the motor and IC. (lock protection operational prin- ciple) If the motor fan is locked, a sine wave signal is not input from the Hall element any more and the potential of the Pin4 external capacitor increases ...

Page 5

... Separate Fig.8 • 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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