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A4407 Datasheet (PDF) - Allegro MicroSystems

A4407 Datasheet PDF - Allegro MicroSystems
Part # A4407
Download  A4407 Download

File Size   1875.06 Kbytes
Page   29 Pages
Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems
Description The A4407 is an automotive power management IC that uses a 2.2 MHz constant on-time (COT) buck pre-regulator to supply a 5 V linear regulator, a 5 V tracking/protected linear regulator,

A4407 Datasheet (PDF)

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A4407 Datasheet PDF - Allegro MicroSystems

Part # A4407
Download  A4407 Click to download

File Size   1875.06 Kbytes
Page   29 Pages
Manufacturer  ALLEGRO [Allegro MicroSystems]
Direct Link  http://www.allegromicro.com
Logo ALLEGRO - Allegro MicroSystems
Description The A4407 is an automotive power management IC that uses a 2.2 MHz constant on-time (COT) buck pre-regulator to supply a 5 V linear regulator, a 5 V tracking/protected linear regulator,

A4407 Datasheet (HTML) - Allegro MicroSystems

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A4407 Product details

Description

The A4407 is an automotive power management IC that uses a 2.2 MHz constant on-time (COT) buck pre-regulator to supply a 5 V linear regulator, a 5 V tracking/protected linear regulator, a 3.3 V linear FET controller/driver, and a 1.2 V/1.5 V/1.8 V linear FET controller/driver. The A4407 provides a pin to set the master reference for the 5 V tracking regulator to either the 3.3 V or the 5 V output. The on-time of the buck is internally adjusted as a function of VINto maintain the 2.2 MHz switching frequency. Efficient operation is achieved by using the buck pre-regulator to drop the input voltage before supplying the linear regulators. Designed to supply CAN and microprocessor power supplies in high temperature environments, the A4407 is ideal for under hood applications.



Features and Benefits

• AEC Q100 Grade 0 qualified

• Internal buck pre-regulator followed by LDO outputs

• 5.5 to 36 V V

IN operating range (50 V maximum);

for start/stop, cold crank, and load dump requirements

• Constant on-time (COT) buck pre-regulator

• Valley current sensing achieves shortest buck on-times

• 2.2 MHz (VIN- adjusted) switching frequency

• 5 V internal low-dropout tracking linear regulator with

foldback short circuit and short-to-battery protections

• 5 V internal low-dropout linear regulator with foldback

short circuit protection

• 3.3 V external FET controller/driver with programmable

current limit and foldback short circuit protection

• 1.2 V/1.5 V/1.8 V external FET controller/driver with

programmable current limit and foldback protection

• Power-on reset (NPOR) with adjustable rising delay

• Logic enable input (ENB) for microprocessor control

• Ignition enable input (ENBAT) for remote startup

• Ignition status indicator (ENBATS) output

• Buck pulse-by-pulse overcurrent protection

• Buck LX short circuit protection (latched)

• Missing asynchronous diode protection (latched)

• UVLO for VIN, charge pump, and the internal rail

• Thermal shutdown protection

• −40ºC to 150ºC junction temperature range




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About Allegro MicroSystems


Allegro MicroSystems is a semiconductor company that designs, manufactures, and markets high-performance power and sensing solutions. The company was founded in 1990 and is headquartered in Manchester, New Hampshire, USA.

Allegro MicroSystems' product portfolio includes Hall-effect sensors, power ICs, motor drivers, and magnetic digital position sensors. These products are used in a wide range of applications, including automotive, industrial, and consumer electronics.

Allegro MicroSystems is known for its expertise in magnetic sensing technology, which is used in many of its products. The company's products are designed to meet the highest standards of performance and reliability, and are manufactured using the latest technology and materials. Allegro MicroSystems also offers custom design and engineering services to meet the specific needs of its customers.

Allegro MicroSystems has a global presence, with sales offices and representatives located around the world. The company is dedicated to delivering innovative and reliable power and sensing solutions that meet the evolving needs of the electronics industry. In 2021, Allegro MicroSystems went public through an initial public offering (IPO) on the NASDAQ stock exchange.

*This information is for general informational purposes only, we will not be liable for any loss or damage caused by the above information.




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