LM2621MM

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LM2621MM

LM2621 1.2V TO 14V INPUT VOLTAGE

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개요

Description

The LM2621MM is a high-efficiency step-up DC-DC converter designed by Texas Instruments. It is specifically tailored for applications requiring low input voltage and high output voltage, making it suitable for battery-powered devices. The device operates with a wide input voltage range from 0.8V to 14V and can generate output voltages up to 14V, allowing it to efficiently convert and boost lower input voltages.
Key features of the LM2621MM include a high switching frequency of up to 2 MHz, which enables the use of small, low-cost inductors and capacitors. Additionally, it offers a high efficiency of up to 90%, minimizing power loss and extending battery life in portable applications. The device incorporates an internal MOSFET, reducing the need for external components and thus simplifying the design process.
The LM2621MM also includes features such as pulse frequency modulation, current limiting, and thermal shutdown protection to ensure reliable operation. Its compact design, available in an 8-pin VSSOP package, makes it ideal for space-constrained applications like mobile phones, handheld devices, and other portable electronics.

Features

The LM2621MM is a step-up DC-DC converter designed by Texas Instruments. It features a wide input voltage range from 0.8V to 14V, making it suitable for various power supply applications. The device is capable of delivering output voltages up to 14V with an efficiency of up to 90%. It operates at a high switching frequency, typically around 1.2 MHz, allowing for the use of small external components and a compact design.
The LM2621MM includes a current limit protection feature to prevent overloading and potential damage. It also has an internal compensation network for stable operation over a wide range of conditions. The device features a shutdown mode, reducing the quiescent current to less than 5 µA, which is ideal for battery-powered applications to conserve energy.
Additionally, the LM2621MM has a soft-start capability to limit inrush current during startup and minimize output voltage overshoot. Its small MSOP-8 package makes it suitable for space-constrained applications. Overall, the LM2621MM is a versatile and efficient solution for step-up voltage conversion requirements.

Package

The LM2621MM is typically available in an 8-lead MSOP (Mini Small Outline Package) package type. This package is compact, making it suitable for space-constrained applications.

Pinout

The LM2621MM is a step-up DC-DC converter produced by Texas Instruments. It is typically used in applications where a higher output voltage is needed from a lower input voltage, such as in battery-powered devices.
The LM2621MM is available in an 8-pin Mini Small Outline Package (MSOP). The pin functions are as follows:
1. VIN: Supply voltage input for the device.
2. SW: Switch pin, connected to the inductor and the output diode.
3. GND: Ground reference for the device.
4. FB (Feedback): Feedback input for sensing the output voltage.
5. SHDN (Shutdown): Shutdown control input to enable or disable the device.
6. COMP (Compensation): Compensation pin for stabilizing the control loop.
7. N/C (No Connection): Typically not connected to anything.
8. VOUT: Output voltage sense connection.
These pins serve to control the power conversion process efficiently, allowing the device to provide a stable output voltage under varying load conditions.

Manufacturer

The LM2621MM is a product manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and manufactures a wide range of electronic components and integrated circuits. The company is known for its innovation in analog and embedded processing technologies, serving various industries such as automotive, industrial, personal electronics, communications, and enterprise systems. Texas Instruments is headquartered in Dallas, Texas, and is recognized for its contributions to the electronics and technology sectors.

Application

The LM2621MM is a high-efficiency, step-up DC-DC converter. It is commonly used in applications requiring voltage boosting, such as LCD bias supply, portable devices, battery-powered equipment, and white LED backlighting. Its compact design and ability to operate at very low input voltages make it suitable for small, power-sensitive electronic devices that need efficient power conversion.

Equivalent

Equivalent products to the LM2621MM chip typically include step-up or boost converters designed for similar voltage and current applications. Some alternatives might be:
1. TPS61030 by Texas Instruments
2. MAX17222 by Maxim Integrated
3. LTC3421 by Analog Devices
4. MCP1640 by Microchip Technology
When selecting an equivalent, ensure that the specifications like input voltage range, output voltage, switching frequency, and current capacity match your requirements. Always refer to the datasheets for detailed comparisons.

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