Manufacturer Part Number
LM3477MM
Manufacturer
Texas Instruments
Introduction
The LM3477MM is a highly efficient, versatile Power Management IC (PMIC) designed for DC DC switching controllers, focusing on step-down (buck) and buck-boost applications.
Product Features and Performance
Efficient step-down (buck) and buck-boost operation
Operates across a wide input voltage range from 2.97V to 35V, accommodating a variety of power sources
High switching frequency of 500kHz allows for smaller external components, reducing overall design size
Maximum duty cycle of 93%, enabling efficient operation over a wide range of loads and input voltages
Features an enable control for power-saving modes
Designed for surface mount technology (SMT) for ease of manufacturing and integration into various circuit designs
Product Advantages
Versatility in handling both step-down and buck-boost operations, making it suitable for a wide range of applications
High-frequency operation enables compact and efficient designs
Wide input voltage range provides flexibility in choice of power sources and applications
High duty cycle supports efficient power conversion under varying conditions
Key Technical Parameters
Output Type: Transistor Driver
Function: Step-Down, Buck-Boost
Number of Outputs: 1
Output Phases: 1
Voltage Supply: 2.97V ~ 35V
Frequency Switching: 500kHz
Duty Cycle (Max): 93%
Operating Temperature: -40°C ~ 125°C (TJ)
Quality and Safety Features
Built to withstand operating temperatures ranging from -40°C to 125°C, ensuring reliability under extreme conditions
Compatibility
Surface Mount technology using an 8-TSSOP, 8-MSOP package, compatible with modern PCB design and manufacturing processes
Application Areas
Ideal for portable and battery-powered devices due to its high efficiency and wide input voltage range
Suitable for both step-down and buck-boost voltage regulation needs in consumer electronics, automotive, and industrial applications
Product Lifecycle
Classified as Obsolete, indicating that it might be nearing the end of its production cycle with limited availability
Customers should seek replacements or upgrades for future designs
Several Key Reasons to Choose This Product
High versatility due to support for both step-down and buck-boost topology
Efficient power conversion attributed to high switching frequency and maximum duty cycle
Suitable for a broad range of applications thanks to its wide input voltage range and operating temperature
Compact design potential because of the high switching frequency and surface mount package
Despite being classified as Obsolete, its performance and compatibility features make it a considerable option for existing designs needing replacement parts or for special applications where its specific advantages are required
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