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LM2731XMF
+StücklisteIC REG BOOST ADJ 1.8A SOT23-5
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HerstellerTexas Instruments
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Herstellerteil #LM2731XMF
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Paket SOT-23 (DBV)-5
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Auf Lager5267
365 Tage Qualitätsgarantie
7*24 Stunden-Servicegarantie
90-Tage Kundendienstgarantie
Originalproduktgarantie
Spezifikationen
| Attribut | Wert |
| Package | Tape & Reel (TR),Cut Tape (CT) |
| ProductStatus | Not For New Designs |
| Function | Step-Up |
| OutputConfiguration | Positive |
| Topology | Boost |
| OutputType | Adjustable |
| NumberofOutputs | 1 |
| Voltage-Input(Min) | 2.7V |
| Voltage-Input(Max) | 14V |
| Voltage-Output(Min/Fixed) | 2.7V |
| Voltage-Output(Max) | 22V (Switch) |
| Current-Output | 1.8A (Switch) |
| Frequency-Switching | 1.6MHz |
| SynchronousRectifier | No |
| OperatingTemperature | -40°C ~ 125°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | SC-74A, SOT-753 |
Übersicht
Description
Key features include a low shutdown current and high conversion efficiency, which is critical for battery-powered devices. The LM2731XMF is equipped with an internal power switch that enhances its efficiency and performance. It also offers protection features like current limiting and thermal shutdown to ensure reliable operation.
The device is typically used in applications such as LCD bias supplies, white LED drivers, and other devices requiring efficient voltage boosting. Its tiny SOT-23 package further aids in space-saving designs, providing a reliable solution for engineers looking to implement boost conversion in their systems.
Equivalent
Features
1. Wide Input Voltage Range: Operates from 2.7V to 14V, making it versatile for various power sources.
2. High Switching Frequency: Typically 1.6 MHz, allowing the use of small inductors and capacitors, enabling a compact design.
3. Output Voltage Flexibility: Capable of generating output voltages up to 25V.
4. Efficiency: Designed for high efficiency to extend battery life in portable applications.
5. Low Shutdown Current: Draws minimal current in shutdown mode, reducing power consumption.
6. Integrated Power MOSFET: Includes a 1.4A, 80mΩ (typical) N-channel MOSFET for efficient power switching.
7. Soft Start: Built-in soft start feature to minimize inrush current during startup.
8. Current Mode PWM Operation: Ensures stability and fast transient response.
9. Thermal Shutdown: Protects the device from excessive heat.
These features make the LM2731XMF ideal for battery-powered devices, LCD bias supplies, and other applications requiring efficient voltage boosting.
Pinout
1. SW (Switch Pin): This is the switching node where the inductor and diode are connected. It is the main output pin that connects to the inductor.
2. GND (Ground Pin): This pin is the ground reference for the IC.
3. FB (Feedback Pin): This pin is used to set the output voltage. A resistor divider is connected from the output to this pin to regulate the voltage.
4. VCC (Supply Voltage Pin): This pin provides the input supply voltage for the internal circuitry of the chip.
5. SHDN (Shutdown Pin): A logic input pin that is used to enable or disable the device. Pulling this pin low shuts down the device.
6. COMP (Compensation Pin): This pin is used for frequency compensation. A capacitor is usually connected to this pin to stabilize the feedback loop.
The LM2731XMF is used in applications requiring efficient voltage boosting with minimal external components.
Manufacturer
Application
1. Portable Devices: Provides efficient power management for battery-operated gadgets.
2. LED Drivers: Powers LED arrays in display backlighting and flashlight applications.
3. Industrial: Used in sensors and low-power industrial equipment requiring higher voltage from a low-voltage source.
4. Telecommunications: Powers RF and mixed-signal circuits.
5. Consumer Electronics: Enhances performance in devices such as digital cameras and MP3 players.
6. Automotive: Utilized in systems needing DC-DC conversion for different vehicle modules.
These applications leverage the LM2731XMF's efficiency and small package size for space-constrained designs.