Manufacturer Part Number
LMR34215FSC5RNXRQ1
Manufacturer
Texas Instruments
Introduction
Automotive grade step-down (buck) voltage regulator optimized for efficiency and compactness in power management applications.
Product Features and Performance
High efficiency switching regulator
Input voltage range from 4.2V to 42V
Stable 5V output with 1.5A current delivery
High switching frequency at 2.1MHz for smaller reactive components
Positive output configuration with synchronous rectification
Surface mount technology with wettable flanks for ease of inspection
Incorporates short-circuit and over-temperature protections
Product Advantages
Robust power solution suitable for harsh automotive environments
Enables compact power supply designs with minimal external components
Ability to handle wide input voltage variations
Key Technical Parameters
Fixed 5V output voltage
5A output current capability
2V minimum input voltage
42V maximum input voltage
1MHz switching frequency
Qualified for automotive applications - AEC-Q100 standard
Operates across a -40°C to 125°C temperature range
Quality and Safety Features
Built-in thermal shutdown
Cycle-by-cycle current limit
Over-voltage protection
Short-circuit protection
AEC-Q100 qualification
Compatibility
Compatible with a variety of microcontrollers, sensors, and other automotive-grade electronic components
Application Areas
Automotive power supplies
Industrial and consumer electronics
Power conditioning systems
Product Lifecycle
Currently active and not at risk of discontinuation
Replacement and upgrade options are expected to be available due to the product's active status
Several Key Reasons to Choose This Product
Automotive qualification ensures reliability under extreme conditions
High-efficiency design translates to energy cost savings and reduced thermal load
The product's high switching frequency allows for the use of smaller components, saving board space
Wide input voltage range offers flexibility in varying power supply conditions
Advanced protection features ensure long-term durability and safe operation
Surface mount package with wettable flanks improves manufacturability and quality control during assembly
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