LM3488MM

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LM3488MM

LM3488 2.97V TO 40V WIDE VIN LOW

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Спецификации

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Description

The LM3488MM is a versatile and efficient high-performance switching regulator controller from Texas Instruments. Primarily used for boost, flyback, and SEPIC (Single-Ended Primary Inductor Converter) applications, this device supports both current-mode and voltage-mode control. It operates in a wide input voltage range from 2.97V to 40V, making it suitable for various battery-powered and industrial applications.
The LM3488MM is designed to provide excellent line and load regulation, and its switching frequency can be adjusted up to 1 MHz. This allows for small external components and compact designs. It features a high-gain error amplifier, enabling precise output voltage regulation, and includes a built-in thermal shutdown to prevent overheating.
Additional features include cycle-by-cycle current limiting, slope compensation, and an under-voltage lockout (UVLO) to enhance reliability and performance. The device comes in the 8-pin VSSOP package, suitable for space-constrained designs. Overall, the LM3488MM is favored for its flexibility, efficiency, and robust feature set, making it an ideal choice for designing compact and efficient power supply solutions.

Features

The LM3488MM is a versatile high-efficiency switching regulator controller designed for use in various step-up (boost), flyback, SEPIC, and inverting applications. Key features include:
1. Wide Input Voltage Range: Operates from 2.97V to 40V, making it suitable for a wide range of applications, including automotive and industrial.
2. Current-Mode Control: Offers excellent line and load regulation and simplifies the feedback loop compensation.
3. Adjustable Switching Frequency: The frequency can be set between 100kHz and 1MHz, allowing for flexibility in design and efficiency optimization.
4. Low Shutdown Current: Consumes minimal power when in shutdown mode, approximately 5µA, enhancing energy efficiency.
5. Internal Soft-Start: Reduces inrush current during startup, protecting the device and connected components.
6. Over-Voltage Protection (OVP): Helps prevent damage by limiting the output voltage.
7. Current Limiting and Thermal Shutdown: Provides protection against overcurrent conditions and overheating.
8. Additional Features: Includes a gate drive for external MOSFET, adjustable current limit, and output voltage, enhancing design flexibility.
This combination of features makes the LM3488MM suitable for designing efficient power supplies for a variety of electronic devices.

Package

The LM3488MM is a current mode, high-efficiency boost controller in the MSOP-8 package type. The MSOP-8 (Mini Small Outline Package) is a compact, surface-mount package suitable for applications where space is limited.

Pinout

The LM3488MM is a controller chip designed for use in boost, SEPIC, and flyback converters. It comes in an 8-pin MSOP (Mini Small Outline Package) package. Here is a brief overview of the pin functions:
1. COMP (Pin 1): Compensation pin used to stabilize the control loop.
2. FB (Pin 2): Feedback pin used for voltage regulation by connecting to the output voltage via a resistor divider.
3. SHDN (Pin 3): Shutdown pin, active-low, used to enable or disable the device.
4. GND (Pin 4): Ground pin, serves as the reference point for all other pins.
5. DR (Pin 5): Drive pin, connects to the gate of the external MOSFET.
6. ISEN (Pin 6): Current sense pin for monitoring the current through the inductor.
7. VIN (Pin 7): Input voltage pin, where the supply voltage is applied.
8. SS (Pin 8): Soft-start pin to control the rate of increase of the output voltage during startup.
These pins collectively facilitate the operation of the LM3488MM as a versatile switching controller for various power supply applications.

Manufacturer

The LM3488MM is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a wide range of electronic components used in various applications, including analog and embedded processing products. TI is known for its innovation and expertise in developing integrated circuits for applications in industrial, automotive, personal electronics, and communication markets. The company is headquartered in Dallas, Texas, and operates worldwide, serving a diverse customer base with a strong focus on research and development to drive technological advancements.

Application

The LM3488MM is a versatile DC-DC controller commonly used in applications such as boost converters, SEPIC (Single-Ended Primary-Inductor Converter) configurations, and flyback converters. It is ideal for automotive, industrial, and consumer electronics where efficient voltage regulation and power conversion are required. Typical applications include powering LED drivers, battery-powered devices, and distributed power systems. Its wide input voltage range and ability to drive external MOSFETs make it suitable for handling various power levels and supporting multiple output voltage requirements.

Equivalent

The LM3488MM is a versatile current-mode PWM controller designed for boost, flyback, and SEPIC applications. Equivalent products include the TI LM3488 series in different packages, LT3757 from Analog Devices, and the ON Semiconductor NCP3063. These controllers offer similar functionality for DC-DC conversion in various applications. Ensure compatibility in terms of specifications like input voltage range, switching frequency, and output current for your specific design needs.

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