Allegro MicroSystems Inc. Two-Channel Synchronous Boost/Buck/Buck-Boost Controller with SPI Interface A81850KETSR

Description
Two-Channel Synchronous Boost/Buck/Buck-Boos t Controller with SPI Interface Part number: A81850KETSR The A81850 is a versatile, ASIL B capable, two-channel DC/DC controller. It supports buck, boost, or buck-boost modes for power-dense automotive lighting designs. Key specifications 40 V input, 65 V output, 160 W Two-channel synchronous boost/buck VIN 5-37 V (40 V transient) SPI-programmable output AEC-Q100 Grade 0, ASIL B Features & Benefits Wide input range: 5 to 37 V VIN operating, 40 V VIN maximum High power density, 160W Highly Efficient, Synchronous Conversion A2-SIL™ product: Developed as a hardware safety element out of context with ASIL B capability for use in automotive safety-related systems Versatile Architecture (Buck, Boost, Buck-Boost)
  • Two-Channel Synchronous Boost/Buck/Buck-Boost Controller with SPI Interface - A81850KETSR - Allegro MicroSystems Inc.
    Allegro MicroSystems Inc.
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Description
Two-Channel Synchronous Boost/Buck/Buck-Boos t Controller with SPI Interface Part number: A81850KETSR The A81850 is a versatile, ASIL B capable, two-channel DC/DC controller. It supports buck, boost, or buck-boost modes for power-dense automotive lighting designs. Key specifications 40 V input, 65 V output, 160 W Two-channel synchronous boost/buck VIN 5-37 V (40 V transient) SPI-programmable output AEC-Q100 Grade 0, ASIL B Features & Benefits Wide input range: 5 to 37 V VIN operating, 40 V VIN maximum High power density, 160W Highly Efficient, Synchronous Conversion A2-SIL™ product: Developed as a hardware safety element out of context with ASIL B capability for use in automotive safety-related systems Versatile Architecture (Buck, Boost, Buck-Boost)
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Datasheet
Datasheet Summary
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The A81850 is a two-channel synchronous boost/buck/buck-boost converter controller with SPI programmable outputs, designed for automotive lighting and ADAS applications. It operates with a 5 to 37 V input range and handles 40 V transients, supporting output voltages up to 65 V in boost mode and down to 3.3 V in buck mode, with 1.5% to 2% accuracy. The device is packaged in a 5 mm × 5 mm, 32-lead QFN with an exposed thermal pad and wettable flanks, and is AEC-Q100 Grade 0 qualified with ASIL B compliance as a hardware safety element out of context under ISO 26262. It supports standalone operation and parallel array mode for up to 320 W output.

Datasheet Summary
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The A81850 is a two-channel synchronous boost/buck/buck-boost converter controller with SPI programmable outputs, designed for automotive lighting and ADAS applications. It operates with a 5 to 37 V input range and handles 40 V transients, supporting output voltages up to 65 V in boost mode and down to 3.3 V in buck mode, with 1.5% to 2% accuracy. The device is packaged in a 5 mm × 5 mm, 32-lead QFN with an exposed thermal pad and wettable flanks, and is AEC-Q100 Grade 0 qualified with ASIL B compliance as a hardware safety element out of context under ISO 26262. It supports standalone operation and parallel array mode for up to 320 W output.

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Two-Channel Synchronous Boost/Buck/Buck-Boost Controller with SPI Interface - A81850KETSR - Allegro MicroSystems Inc.
Allegro MicroSystems Inc.
Manchester, NH, United States
Two-Channel Synchronous Boost/Buck/Buck-Boost Controller with SPI Interface
A81850KETSR
Two-Channel Synchronous Boost/Buck/Buck-Boost Controller with SPI Interface A81850KETSR
Two-Channel Synchronous Boost/Buck/Buck-Boos t Controller with SPI Interface Part number: A81850KETSR The A81850 is a versatile, ASIL B capable, two-channel DC/DC controller. It supports buck, boost, or buck-boost modes for power-dense automotive lighting designs. Key specifications 40 V input, 65 V output, 160 W Two-channel synchronous boost/buck VIN 5-37 V (40 V transient) SPI-programmable output AEC-Q100 Grade 0, ASIL B Features & Benefits Wide input range: 5 to 37 V VIN operating, 40 V VIN maximum High power density, 160W Highly Efficient, Synchronous Conversion A2-SIL™ product: Developed as a hardware safety element out of context with ASIL B capability for use in automotive safety-related systems Versatile Architecture (Buck, Boost, Buck-Boost)

Two-Channel Synchronous Boost/Buck/Buck-Boost Controller with SPI Interface

Part number: A81850KETSR

The A81850 is a versatile, ASIL B capable, two-channel DC/DC controller. It supports buck, boost, or buck-boost modes for power-dense automotive lighting designs.

Key specifications

  • 40 V input, 65 V output, 160 W
  • Two-channel synchronous boost/buck
  • VIN 5-37 V (40 V transient)
  • SPI-programmable output
  • AEC-Q100 Grade 0, ASIL B

Features & Benefits

  • Wide input range: 5 to 37 V VIN operating, 40 V VIN maximum
  • High power density, 160W
  • Highly Efficient, Synchronous Conversion
  • A2-SIL™ product: Developed as a hardware safety element out of context with ASIL B capability for use in automotive safety-related systems
  • Versatile Architecture (Buck, Boost, Buck-Boost)
Supplier's Site Datasheet

Technical Specifications

  Allegro MicroSystems Inc.
Product Category IC Switching Voltage Regulators
Product Number A81850KETSR
Product Name Two-Channel Synchronous Boost/Buck/Buck-Boost Controller with SPI Interface
Output Voltage Type Adjustable / Variable
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