Manufacturer Part Number
AST1S31PUR
Manufacturer
STMicroelectronics
Introduction
High-efficiency step-down DC DC switching regulator for power management applications
Product Features and Performance
Step-down (Buck) topology
Adjustable output voltage
Synchronous rectification for improved efficiency
3A output current capability
Wide input voltage range from 2.8V to 4V
Output voltage adjustable from 0.8V to 4V
High switching frequency of 1.5MHz
Thermal shutdown and over-current protection
Stable with low ESR ceramic capacitors
Product Advantages
High power efficiency
Compact 8-VDFN exposed pad package
Suitable for battery-powered applications
Low output voltage ripple
Good thermal performance
Key Technical Parameters
Input Voltage (Min): 2.8V
Input Voltage (Max): 4V
Output Voltage (Min/Fixed): 0.8V
Output Voltage (Max): 4V
Current - Output: 3A
Frequency - Switching: 1.5MHz
Operating Temperature Range: -40°C to 150°C
Mounting Type: Surface Mount
Package / Case: 8-VDFN Exposed Pad
Supplier Device Package: 8-VFDFPN (3x3)
Quality and Safety Features
Over-current protection
Thermal shutdown feature
Designed for EMC compliance
Compatibility
Compatible with ceramic capacitors
Surface mount package for standard PCB manufacturing
Application Areas
Battery-powered devices
Portable electronics
Networking equipment
Industrial systems
Product Lifecycle
Active product status
Consider availability of long-term support for industrial applications
Several Key Reasons to Choose This Product
High efficiency for prolonged battery life
Wide operating temperature suitable for industrial applications
High-frequency operation allows use of small external components
Robust design with built-in safety features
STMicroelectronics is known for reliable and high-quality semiconductor products
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