Manufacturer Part Number
AST1S31HF
Manufacturer
stmicroelectronics
Introduction
The AST1S31HF is a high-efficiency, step-down DC DC switching regulator designed for power management, specifically tailored for automotive applications.
Product Features and Performance
High-efficiency step-down voltage regulation
Adjustable output voltage range from 0.8V to 4V
Capable of delivering a 3A output current
3MHz switching frequency for compact solution size
Integrated synchronous rectifier for improved efficiency
Operation temperature range from -40°C to 150°C
Automotive grade with AEC-Q100 qualification
Product Advantages
High efficiency reduces thermal footprint and energy loss
Adjustable output supports a wide range of use cases
High-frequency operation allows for smaller external components
Synchronous rectification optimizes power conversion efficiency
Wide operating temperature range suitable for automotive environments
AEC-Q100 qualification ensures automotive reliability standards
Key Technical Parameters
Voltage Input (Min): 2.8V
Voltage Input (Max): 4V
Voltage Output (Min/Fixed): 0.8V
Voltage Output (Max): 4V
Current Output: 3A
Frequency Switching: 2.3MHz
Operating Temperature: -40°C ~ 150°C (TJ)
Quality and Safety Features
Operates reliably in extreme temperatures
AEC-Q100 qualified for automotive use
Built-in protection features for enhanced safety
Compatibility
Surface mount technology for easy PCB integration
Compact 8-VDFN exposed pad package for space-sensitive applications
Application Areas
Automotive power systems
Electronic control units (ECUs)
Power supply modules for automotive sensors
Infotainment systems
Product Lifecycle
Currently marked as Active
Not nearing discontinuation, ensuring steady availability
Upgrades or replacements should be monitored but are not imminent
Several Key Reasons to Choose This Product
Designed to meet stringent automotive standards
High-efficiency performance minimizes energy loss
Flexible output voltage range suits various automotive applications
Stable operation across a broad temperature range
Compact size supports design in space-constrained environments
AEC-Q100 qualification affirms reliability in automotive conditions