AH266
High Voltage Hall Effect Latch
Features
General Description
- On-chip Hall plate
AH266 is an integrated Hall sensor with output
drivers designed for electronic commutation of
brush-less 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 darlington 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.
- Operating voltage: 4V~28V
- Output current: 400mA(Continuous, 25oC)
- Reverse protection diode only for chip reverse
(Note)
power connecting
- Output protection Zener breakdown Vz=62V(Typ)
- Package: SIP-4L
(Note)
Protection diode only exists at power pin(1,4) output, not
including pin (2,3).
If a magnetic flux density (B) is larger than operate
point (Bop), DO turn on (low) and DOB turn off
(high). The outputs state is latched prior to reach
release point (Brp). if B< Brp, DO turn off and DOB
turn on. AH266 is rated for operation over
temperature range from -20oC to 85 oC and voltage
range from 4V to 28V. The devices are available in
low cost die forms or rugged 4 pin SIP packages.
Application
- Dual-coil Brush-less DC Motor
- Dual-coil Brush-less DC Fan
- Revolution Counting
- Speed Measurement
Pin Assignment
Pin Configuration
4. GND
3. DOB
2. DO
Name
Description
VCC
DO
Positive Power Supply
Output Pin
1. VCC
DOB
GND
Output Pin
Ground
Ordering Information
AH266 X - X X X - X
Magnetic
Packing
Blank : Tube
Wafer Body
Package
P: SIP-4L
Lead
Characteristics
Blank or
L : Lead Free
Blank: Normal
A or B
A~Z : if necessary
to specify
A
: Taping
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 0.2 Jan 19, 2005
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