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MA7021

Major Power Technology Co., Ltd.

Rev.1.7 Nov.16, 2017

Single Output Hall Effect Latch



GENERAL DESCRIPTION

MA7021 is an integrated Hall effect latched sensor designed for electronic commutation of

brush-less DC motor applications. The device is using HV BCD process 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 open-collector output. An

internal band-gap regulator is used to provide temperature compensated supply voltage for

internal circuits and allows a wide operating supply range.

If a magnetic flux density larger than threshold Bop, OUT is turned on(low). The output state

is held until a magnetic flux density reversal falls below Brp causing OUT to be turned off

(high).



FEATURES

-

2.5V to 26V DC operation voltage

-

Temperature compensation

-

Wide operating voltage range

-

Open-Drain pre-driver

-

25mA maximum sinking output current.

-

Low Profile TSOT/SOT23-3L and SIP-3L(TO-92S) Package( Green and Lead Free )



PIN ASSIGNMENT

The package of MA7021 ; the pin assignment is given by:

VDD

OUT

(Top View)

GND

1

VDD

2

GND

3

OUT

(Top View)

MA7021

SIP-3L

MA7021

2

3

1

TSOT/SOT23-3L

Name

Description

VDD

Supply Voltage

OUT

Output

GND Ground.