Allegro MicroSystems Inc. Synchronous Buck Controller A8660KESTR-J

Description
Designed to satisfy the power supply requirements of automotive, industrial, and consumer applications, the A8660 includes all the control and protection circuitry to produce a robust PWM controller delivering high current. The A8660 includes PWM frequency dithering, which has been shown to reduce EMI/EMC. A soft recovery feature prevents output voltage overshoot when the converter comes out of a low VIN dropout condition. For high current, low frequency designs (<520 kHz), an external clock can be applied to the SYNCIN pin to shift the PWM harmonics, thus avoiding AM band interference with a tuner or other sensitive electronics. The A8660 has external compensation so it can be tuned to satisfy various system goals over a wide range of PWM frequencies and external components. It includes adjustable soft start to minimize inrush current. Additionally, it monitors the feedback voltage to provide an open-drain NPOR signal with adjustable delay time. Extensive protection features of the A8660 include pulse-by pulse current limit, hiccup mode short-circuit protection, BOOT open/short voltage protection, VIN undervoltage lockout, VOUT overvoltage protection, and thermal shutdown. The A8660 is supplied in a low profile 20-pin QFN package (suffix “ES”) with exposed power pad.
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Suppliers

Company
Product
Description
Supplier Links
Synchronous Buck Controller - A8660KESTR-J - Allegro MicroSystems Inc.
Manchester, NH, United States
Synchronous Buck Controller
A8660KESTR-J
Synchronous Buck Controller A8660KESTR-J
Designed to satisfy the power supply requirements of automotive, industrial, and consumer applications, the A8660 includes all the control and protection circuitry to produce a robust PWM controller delivering high current. The A8660 includes PWM frequency dithering, which has been shown to reduce EMI/EMC. A soft recovery feature prevents output voltage overshoot when the converter comes out of a low VIN dropout condition. For high current, low frequency designs (<520 kHz), an external clock can be applied to the SYNCIN pin to shift the PWM harmonics, thus avoiding AM band interference with a tuner or other sensitive electronics. The A8660 has external compensation so it can be tuned to satisfy various system goals over a wide range of PWM frequencies and external components. It includes adjustable soft start to minimize inrush current. Additionally, it monitors the feedback voltage to provide an open-drain NPOR signal with adjustable delay time. Extensive protection features of the A8660 include pulse-by pulse current limit, hiccup mode short-circuit protection, BOOT open/short voltage protection, VIN undervoltage lockout, VOUT overvoltage protection, and thermal shutdown. The A8660 is supplied in a low profile 20-pin QFN package (suffix “ES”) with exposed power pad.

Designed to satisfy the power supply requirements of automotive, industrial, and consumer applications, the A8660 includes all the control and protection circuitry to produce a robust PWM controller delivering high current.

The A8660 includes PWM frequency dithering, which has been shown to reduce EMI/EMC. A soft recovery feature prevents output voltage overshoot when the converter comes out of a low VIN dropout condition. For high current, low frequency designs (<520 kHz), an external clock can be applied to the SYNCIN pin to shift the PWM harmonics, thus avoiding AM band interference with a tuner or other sensitive electronics.

The A8660 has external compensation so it can be tuned to satisfy various system goals over a wide range of PWM frequencies and external components. It includes adjustable soft start to minimize inrush current. Additionally, it monitors the feedback voltage to provide an open-drain NPOR signal with adjustable delay time.

Extensive protection features of the A8660 include pulse-by pulse current limit, hiccup mode short-circuit protection, BOOT open/short voltage protection, VIN undervoltage lockout, VOUT overvoltage protection, and thermal shutdown. The A8660 is supplied in a low profile 20-pin QFN package (suffix “ES”) with exposed power pad.

Supplier's Site Datasheet
Power Supply Controllers, Monitors - 620-2003-1-ND - DigiKey
Thief River Falls, MN, United States
Power Supply Controllers, Monitors
620-2003-1-ND
Power Supply Controllers, Monitors 620-2003-1-ND
Power Supply Controller Automotive, Consumer, Industrial 20-QFN (4x4)

Power Supply Controller Automotive, Consumer, Industrial 20-QFN (4x4)

Supplier's Site Datasheet
Power Supply Controllers, Monitors - 620-2003-2-ND - DigiKey
Thief River Falls, MN, United States
Power Supply Controllers, Monitors
620-2003-2-ND
Power Supply Controllers, Monitors 620-2003-2-ND
Power Supply Controller Automotive, Consumer, Industrial 20-QFN (4x4)

Power Supply Controller Automotive, Consumer, Industrial 20-QFN (4x4)

Supplier's Site Datasheet
Power Supply Controllers, Monitors - 620-2003-6-ND - DigiKey
Thief River Falls, MN, United States
Power Supply Controllers, Monitors
620-2003-6-ND
Power Supply Controllers, Monitors 620-2003-6-ND
Power Supply Controller Automotive, Consumer, Industrial 20-QFN (4x4)

Power Supply Controller Automotive, Consumer, Industrial 20-QFN (4x4)

Supplier's Site Datasheet

Technical Specifications

  Allegro MicroSystems Inc. DigiKey
Product Category IC Voltage Regulators IC Voltage Regulators
Product Number A8660KESTR-J 620-2003-1-ND
Product Name Synchronous Buck Controller Power Supply Controllers, Monitors
Package Type Other; 20-Pin QFN Other; 20-WFQFN Exposed Pad
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