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LM5118MH
+NomenclatureSwitching Controllers
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FabricantTexas Instruments
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Pièce fabricant #LM5118MH
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En stock28508
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Spécifications
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Présentation
Description
Key features of the LM5118MH include a robust control scheme that allows seamless transition between buck and boost modes, ensuring consistent output across varying input conditions. It also offers an adjustable soft-start feature, current-mode control for enhanced transient response, and integrated protections such as undervoltage lockout, current limit, and thermal shutdown.
The LM5118MH comes in a thermally efficient HTSSOP-20 package, making it suitable for space-constrained designs. Its combination of wide input range, high efficiency, and comprehensive protection features makes the LM5118MH a reliable choice for power management in demanding environments.
Equivalent
1. LTC3780 from Analog Devices - a high-efficiency synchronous buck-boost DC/DC controller.
2. TPS63070 from Texas Instruments - a high-current, synchronous buck-boost converter.
3. MAX15026 from Maxim Integrated - a buck-boost DC-DC converter controller.
These alternatives may have differing specifications, so ensure to check the datasheets for compatibility with your application.
Features
1. Wide Input Voltage Range: It supports 3V to 75V, making it suitable for diverse applications.
2. Output Voltage Flexibility: The device can deliver an output voltage range from 1.5V to 50V.
3. High Efficiency: Achieves efficiency up to 95% due to synchronous rectification and optimized switching.
4. Dual Mode Operation: Seamlessly transitions between buck and boost modes based on input conditions.
5. Programmable Switching Frequency: Allows selection from 50 kHz to 500 kHz for design flexibility.
6. Robust Protection Features: Includes over-voltage protection, cycle-by-cycle current limit, and thermal shutdown.
7. Soft-Start Capability: Provides controlled startup to prevent inrush current.
8. Enable/Shutdown Function: Facilitates low-power standby mode.
9. Current Mode Control: Ensures stable operation across all conditions.
10. Thermal Performance: Housed in a thermally enhanced TSSOP package for efficient heat dissipation.
These features make the LM5118MH ideal for automotive, industrial, and other high-reliability power supply applications.
Pinout
This IC is provided in a 20-pin thermally enhanced TSSOP (Thin Shrink Small Outline Package), which is denoted by the suffix "MH" in its part number. Here's a brief breakdown of its function:
- Pin Count: 20 pins
- Functionality: The LM5118MH allows for both step-down (buck) and step-up (boost) voltage regulation, combining the features of both in a single converter. It features a wide input voltage range, high efficiency, and can deliver output power in automotive systems, battery-operated devices, and other applications requiring efficient power conversion under varying conditions.
The LM5118MH includes essential functions such as current mode control, programmable switching frequency, and a robust set of protections for over-voltage, under-voltage, and thermal conditions, ensuring reliable operation across various scenarios.