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| 型號： | A266 |
| 英文描述： | Hall Sensor IC |
| 中文描述： | 霍爾傳感器IC |
| 文件頁數(shù)： | 1/7頁 |
| 文件大小： | 202K |
| 代理商： | A266 |
Ampson Technology, Inc.
A266
1/7
5/22/2002 REV.1.0
COMPLEMENTARY OUTPUT HALL EFFECT LATCHED SINK DRIVER IC
!
FEATURES
1) On-chip Hall sensor IC with two different
sensitivity and hysteresis settings for A266.
2) Internal bandgap regulator allows temperature
compensated operations and a wide operating
voltage range.
3) High output sinking capability up to 300mA for
driving large load.
!
GENERAL DESCRIPTION
A266 is an integrated Hall sensors with output drivers
designed for electronic commutation of brushless DC
motor applications. The device includes an on-chip
Hall voltage generator for magnetic sensing, a
comparator that amplifies the Hall voltage, and a
Schmitt trigger to provide switching hysteresis for
noise rejection, and complementary open-collector
drivers for sinking large current loads. An internal
bandgap regulator is used to provide temperature
compensated supply voltage for internal circuits and
allows a wide operating supply range.
!
APPLICATIONS
1) Brushless DC Motor
2) Brushless DC Fan
4) Lower current change rate reduces the peak
output voltages during switching.
5) Build in protection diode for chip reverse power
connecting.
6) Package: SIP-4.
If a magnetic flux density larger than threshold Bop,
DO is turned on(low) and DOB is turned off (high).
The output state is held until a magnetic flux density
reversal falls below Brp causing DO to be turned off
and DOB turned on.
A266 is rated for operation over temperature range
from -20
o
C to 100
o
C and voltage range from 3.5V
to 28V. The devices are available in low cost die
forms or rugged 4 pin SIP packages.
3) Revolution Counting
4) Speed Measurement
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