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LT1936EMS8E
+Lista de MateriaisSwitching Voltage Regulators LT1936 - 1.4A, 500kHz Step-Down Switching Regulator
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FabricanteDispositivos analógicos
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Peça do Fabricante #LT1936EMS8E
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Ficha Técnica LT1936EMS8E DataSheet
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Especificações
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Visão Geral
Description
Key features of the LT1936EMS8E include a wide input voltage range, allowing it to handle diverse power sources. It also supports a high switching frequency, which helps to minimize the size of external components like inductors and capacitors, thus saving board space. The device provides excellent line and load regulation, ensuring stable output under varying conditions.
The regulator incorporates built-in protection features such as thermal shutdown, overcurrent protection, and short-circuit protection, enhancing its reliability and safety in demanding applications. It is suitable for powering microprocessors, FPGAs, and other digital ICs in industrial, automotive, and consumer electronics. Overall, the LT1936EMS8E offers a balance of efficiency, reliability, and compactness for efficient power management solutions.
Equivalent
1. LM2576 by Texas Instruments: A 3A step-down voltage regulator.
2. MIC4576 by Microchip: A 3A step-down regulator.
3. L4971 by STMicroelectronics: A 1.5A step-down regulator.
4. AP1509 by Diodes Incorporated: A 2A step-down converter.
Always check the specific requirements such as input voltage range, output current, switching frequency, and package when selecting an alternative.
Features
1. Wide Input Voltage Range: Operates from 3.6V to 36V, suitable for a variety of power sources.
2. Output Current: Capable of delivering up to 2A output current.
3. High Efficiency: Up to 90% efficient, reducing heat and energy loss.
4. Switching Frequency: Operates at a fixed 500kHz frequency, allowing for smaller external components.
5. Compact Size: Available in a thermally enhanced 8-lead MSOP package, saving board space.
6. Low Shutdown Current: Features low quiescent current of 2.5µA in shutdown mode to save power.
7. Thermal Protection: Integrated thermal shutdown to prevent overheating.
8. Soft-Start Capability: Minimizes inrush current during startup to protect the device and load.
9. Short-Circuit Protection: Built-in current limiting for enhanced reliability.
These features make the LT1936EMS8E suitable for applications such as distributed power systems, battery-powered devices, and automotive systems.
Pinout
1. SW (Pin 1): Switch pin where inductor is connected. This pin carries the inductor current.
2. BOOST (Pin 2): Boost pin to drive the gate of the internal high-side switch above the supply voltage.
3. VIN (Pin 3): Input supply pin for the regulator, providing power to the internal circuitry and the switch.
4. SHDN (Pin 4): Shutdown pin to turn the regulator on or off. A low voltage disables the device.
5. FB (Pin 5): Feedback pin, connected to the output voltage divider to set the regulated output voltage.
6. GND (Pin 6): Ground reference for the device.
7. VC (Pin 7): Compensation pin for loop stability. This pin is used to stabilize the feedback loop.
8. RT (Pin 8): Timing resistor pin to set the switching frequency.
This configuration allows the LT1936EMS8E to efficiently convert high input voltages to lower output voltages for various applications.