Manufacturer Part Number
LM3671MF-1.25
Manufacturer
Texas Instruments
Introduction
The LM3671MF-1.25 is a step-down DC-DC switching regulator designed to deliver a fixed 1.25V output from an input range of 2.7V to 5.5V.
Product Features and Performance
Fixed 1.25V output voltage
600mA output current
2MHz switching frequency
Synchronous rectification for improved efficiency
Operates over the wide temperature range of -40°C to 85°C
Buck topology for step-down voltage conversion
Single output operation
Product Advantages
High-efficiency power conversion
Compact SOT-23-5 package suitable for space-constrained applications
Fast switching frequency allows for smaller external components
Low dropout performance
Key Technical Parameters
Input Voltage Min 2.7V
Input Voltage Max 5.5V
Output Voltage Fixed at 1.25V
Current Output Max 600mA
Frequency Switching 2MHz
Topology Buck (Step-Down)
Positive output configuration
Quality and Safety Features
Built-in temperature protection range from -40°C to 85°C
Over-current and short-circuit protections
Compatibility
Designed for surface mount technology (SMT) with SC-74A, SOT-753 footprint
Application Areas
Mobile phones
Handheld devices
Battery-powered electronics
Wireless communication systems
Product Lifecycle
Obsolete status with no direct replacement, though alternative solutions may be available
Several Key Reasons to Choose This Product
Efficient power management for battery-operated devices
Texas Instruments' reputation for reliable and durable products
Designed to address applications requiring compact size and high efficiency
Ideal as a space-saving solution in portable electronics
High switching frequency reduces the size of external components needed