Functional Safety PMICs

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

A81850

Markets Served

The A81850 is a versatile two-channel synchronous DC/DC controller engineered for complex power supply designs. Its architecture supports boost, buck, or buck-boost topologies, providing the flexibility to regulate a wide range of input-to-output voltage conditions with a single IC. An integrated SPI interface enables detailed configuration and real-time diagnostic fault reporting for robust system control and monitoring. For higher power requirements, multiple A81850 devices can be configured in an array to scale the output current capability.

Product Details

Top Features

  • 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) 

Part Number Specifications and Availability

View Full Specification Details

A81850KETSR

operating_input_voltage_min_v
5
operating_input_voltage_max_v
37
topology
Buck, Boost, Buck-Boost
temperature
-40°C to 150°C
package
32-Pin QFN
market
Automotive

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