Product Name

Product Type

Ordering Code

Package

Hall Effect Latch

TLI4946K

SP000604398

PG-SC59-3-4

Hall Effect Latch

TLI4946-2K

SP000604328

PG-SC59-3-4

Hall Effect Latch

TLI4946-2L

SP000604336

PG-SSO-3-2

High Precision Hall Effect Latch

TLI4946

Datasheet

7

Rev. 1.0, 2009-05-04

1

Product Description

1.1

Overview

The TLI4946xy is a high precision Hall Effect Latch with highly accurate

switching thresholds for ambient operating temperatures up to 125°C.

The TLI4946K and the TLI4946-2K is available in a PG-SC59-3-4

package, the TLI4946-2L in a PG-SSO-3-2 package.

1.2

Features

•

2.7 V to 18 V supply voltage operation.

•

Operation from unregulated power supply.

•

High sensitivity and high stability of the magnetic switching points.

•

High resistance to mechanical stress by active error compensation.

•

Reverse battery protection (-18 V).

•

Superior temperature stability.

•

Low jitter (typically 1 µs).

•

High ESD performance (

± 4 kV HBM).

•

Digital output signal (open-drain).

•

Not suitable for automotive applications

1.3

Target Applications

The TLI4946xy is ideally suited to detect the rotor position in Brushless DC (BLDC) Motors used in industrial and

consumer applications, such as: air conditioning systems, pumps, washing machines, DVD players, rolling shutter,

etc. The sensor also provides a reliable switching for index counting with small pole wheels and large air gaps.

The TLI4946xy can also be used for index counting.