AH266

High Voltage Hall Effect Latch

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

1/6

Features

- On-chip Hall plate

- Operating voltage: 4V~28V

- Output current: 400mA(Continuous, 25

- Reverse protection diode only for chip reverse

- 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).

Application

- Dual-coil Brush-less DC Motor

- Dual-coil Brush-less DC Fan

- Revolution Counting

- Speed Measurement

Pin Assignment

1. VCC

2. DO

4. GND

3. DOB

General Description

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.

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 -20

range from 4V to 28V. The devices are available in

low cost die forms or rugged 4 pin SIP packages.

Pin Configuration

Name

Description

VCC

Positive Power Supply

DO

Output Pin

DOB

Output Pin

GND

Ground

Ordering Information

AH266 X -X X X -X

Packing

Blank : Tube

A : Taping

P: SIP-4L

Package

Lead

L : Lead Free

Blank: Normal

Wafer Body

Magnetic

Characteristics

Blank or

A~Z : if necessary

to specify

A or B