Datasheet > A4919GETTR-5-T

A4919GETTR-5-T

更新时间： 2022-05-14 22:19:46

品牌	Logo	应用领域
急速微 - ALLEGRO		/
页数	文件大小	规格书
22页	956K
描述
Three-Phase MOSFET Driver with Integrated Regulator

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A4919GETTR-5-T 数据手册

A4919

Three-Phase MOSFET Driver

with Integrated Regulator

DESCRIPTION

The A4919 is a three-phase controller for use with N-channel

external power MOSFETs.

FEATURES AND BENEFITS

• High-current 3-phase gate drive for N-channel MOSFETs

• 5.5 to 50 V supply voltage range

• Regulated logic supply voltage output option

• Low-current Sleep mode option

• Motor phase short-to-supply and short-to-ground detection

• Cross-conduction protection

Auniquechargepumpregulatorprovidesfull(>10V)gatedrive

at power supply voltages down to 7 V and allows the A4919

to operate with reduced gate drive at power supply voltages

down to 5.5 V. A bootstrap capacitor is used to provide the

abovepowersupplyvoltagerequiredforN-channelMOSFETs.

• Undervoltage, overtemperature monitors

One logic-level input is provided for each of the six power

MOSFETs in the 3-phase bridge, allowing motors to be driven

withanycommutationschemedefinedbyanexternalcontroller.

The power MOSFETs are protected from cross-conduction by

integrated crossover control.

APPLICATIONS

• Lawn and garden equipment

• Battery-operated power tools

• Industrial grinders

• Continuous positive airway pressure (CPAP) machines

• Vacuum cleaners

Motor phase short-to-supply and short-to-ground detection

is provided by independent drain-source voltage monitors on

each MOSFET. Short faults, supply undervoltage, and chip

overtemperature conditions are indicated by a single open-

drain fault output.

PACKAGE:

28-pin TSSOP

with exposed thermal pad

(suffix LP)

Productvariantsincorporatingalowdropout(LDO)regulatorto

source either 5.0 V or 3.3 V to external circuitry are available.

TheA4919 is supplied in a 28-pin TSSOPpower package with

exposed thermal pad (package type LP) and a 28-terminal

5 mm × 5 mm × 0.90 mm QFN package with exposed thermal

pad. Both packages are lead (Pb) free, with 100% matte-tin

leadframe plating (suffix T).

28-terminal

5 mm × 5 mm QFN

with exposed thermal pad

(suffix ET)

Not to scale

Typical Application Diagram

V+

VDD

3-Phase

BLDC

A4919

Motor

Micro-

controller

A4919-DS, Rev. 5

MCO-0000329

January 25, 2019

12 3 4 5 6 7...22

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