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Datasheet
LMR50410XDBVR – 1A, 36V Synchronous Buck Switching Regulator IC
The LMR50410XDBVR is a high-performance, wide-input-voltage synchronous buck converter designed to deliver up to 1A continuous output current with superior efficiency and stability. Supporting an input voltage range of 4V to 36V, this device is ideal for a variety of industrial and embedded power supply applications that require step-down conversion from unregulated sources. Operating at a fixed 700kHz switching frequency, the LMR50410 enables the use of compact inductors and capacitors, minimizing solution size while maintaining excellent transient performance. Available in both PFM and FPWM modes, it ensures high efficiency at light loads and constant frequency operation with low output ripple across the full load range.
The LMR50410 integrates soft-start, compensation, and protection circuitry, allowing simplified design with minimal external components. Its robust built-in protection suite includes cycle-by-cycle current limiting, hiccup mode short-circuit protection, and thermal shutdown, ensuring dependable performance under all operating conditions. With a precision +-1% voltage reference and precision enable function, the device guarantees accurate, reliable operation in compact, space-sensitive designs using the SOT-23-6 package.
Key Features
- Wide Input Voltage Range: Operates from 4V to 36V, suitable for a broad range of industrial and embedded systems.
- 1A Output Current: Supports continuous 1A load with excellent regulation and efficiency.
- Synchronous Buck Design: Integrated high-side and low-side MOSFETs minimize losses for high efficiency.
- Fixed 700kHz Switching Frequency: Enables small inductors and capacitors for compact designs.
- PFM/FPWM Operation: Provides high efficiency at light loads (PFM) and consistent switching frequency (FPWM).
- Internal Soft-Start and Compensation: Simplifies circuit design with minimal external components.
- Advanced Protection Features: Includes current limit, hiccup-mode short-circuit protection, and thermal shutdown.
- Precision Performance: +-1% voltage reference with precision enable ensures reliable operation.
- High Duty Cycle: Up to 98% maximum duty cycle with 60ns minimum on-time for flexible output voltage settings.
- Wide Temperature Range: Operates from –40 C to+150 C junction temperature for robust industrial performance.
