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LM2611AMF/NOPB
+StücklisteIC REG CUK ADJ 1.2A SOT23-5
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HerstellerTexas Instruments
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Herstellerteil #LM2611AMF/NOPB
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Paket SOT-23-5
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Auf Lager1873
365 Tage Qualitätsgarantie
7*24 Stunden-Servicegarantie
90-Tage Kundendienstgarantie
Originalproduktgarantie
Spezifikationen
| Attribut | Wert |
| Package / Case | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Part Status | Active |
| Function | Step-Up/Step-Down |
| Output Configuration | Negative |
| Topology | Cuk |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 2.7V |
| Voltage - Input (Max) | 14V |
| Voltage - Output (Min/Fixed) | -1.23V |
| Voltage - Output (Max) | -22V |
| Current - Output | 1.2A |
| Frequency - Switching | 1.4MHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
Übersicht
Description
The LM2611AMF/NOPB boasts a high efficiency, typically over 80%, depending on load conditions, which is essential for battery-powered devices. It also provides a low shutdown current of less than 2 µA, helping to conserve energy when the device is not in active use. The regulator integrates protection features such as current limiting and thermal shutdown to enhance reliability and safety in operation. Packaged in a small, thermally-efficient MSOP-8, it is suitable for compact electronic designs like portable devices, communication equipment, and other consumer electronics requiring efficient voltage inversion.
Equivalent
1. TPS63700 from Texas Instruments – An inverting converter with similar functionality.
2. LT1931 from Analog Devices – A micropower inverting DC-DC converter.
3. MAX764 from Maxim Integrated – A low-noise, high-efficiency inverter.
4. MC33063A from ON Semiconductor – A versatile DC-DC converter that can be configured as an inverter.
Always ensure compatibility in terms of specifications and pin configurations before substitution.
Features
1. Wide Input Voltage Range: Operates from 2.7V to 14V, making it suitable for various applications.
2. Adjustable Output: Capable of delivering adjustable negative output voltages.
3. High Efficiency: Utilizes PWM control for improved efficiency over a wide load range.
4. Low Noise: Designed to minimize noise and electromagnetic interference (EMI).
5. Current Limiting: Includes internal current limit for protection against overcurrent conditions.
6. Thermal Shutdown: Protects the device by shutting down if the operating temperature exceeds safe levels.
7. Compact Package: Available in a small SOT-23 package for space-constrained applications.
8. Ease of Use: Requires minimal external components, simplifying the design process.
9. Applications: Suitable for battery-powered devices, distributed power systems, and other applications requiring negative output voltages.
The LM2611AMF/NOPB is ideal for designs that need efficient and reliable voltage inversion with minimal noise.
Pinout
Here is a brief description of its pin functions:
1. SW (Pin 1): The switch node, which connects to the inductor or capacitor in your application.
2. GND (Pin 2): Ground pin, the return path for input and output.
3. FB (Pin 3): Feedback pin, used to set the output voltage by connecting to a resistor divider.
4. SHDN (Pin 4): Shutdown pin, active low input to disable the device, reducing supply current.
5. VDD (Pin 5): Input supply voltage pin.
6. SS (Pin 6): Soft-start pin to control the inrush current.
7. COMP (Pin 7): Compensation pin for stabilizing the control loop.
8. VOUT (Pin 8): Output voltage pin, where the regulated voltage is available.
These pins support the LM2611’s primary function of providing a regulated output voltage from a varying input voltage, often used in systems requiring negative output voltages.
Manufacturer
Application
1. Telecommunications Equipment: Provides stable negative voltages required by various telecommunications circuits.
2. Battery-Powered Devices: Efficiently generates negative voltages from single-cell lithium-ion or multi-cell battery packs.
3. Industrial Instruments: Offers precision voltage conversion crucial for sensors and measurement devices.
4. LCD Bias Supplies: Supplies the negative voltage necessary for certain types of displays.
5. General-Purpose Negative Voltage Regulation: Useful in any electronic system requiring reliable negative voltage generation.
Its low-dropout and high-efficiency features make it ideal for compact and portable applications.