LM3488MMX

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LM3488MMX

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IC REG CTRLR MULT TOP 8VSSOP

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規格

屬性 價值
Part Status Obsolete
Base Product Number LM3488
Output Type Transistor Driver
Function Step-Up, Step-Up/Step-Down
Output Configuration Positive
Topology Boost, Flyback, SEPIC
Number of Outputs 1
Output Phases 1
Voltage - Supply (Vcc/Vdd) 2.97V ~ 40V
Frequency - Switching 100kHz ~ 1MHz
Duty Cycle (Max) 100%
Synchronous Rectifier No
Clock Sync Yes
Control Features Enable, Frequency Control
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package 8-VSSOP
Packaging Tape & Reel (TR)

概述

Description

The LM3488MMX is a high-voltage, current-mode PWM (Pulse Width Modulation) controller designed for DC-DC converter applications, particularly in power supply circuits. It operates in a wide input voltage range, typically from 4.5V to 60V, making it suitable for various power supply designs, including automotive and industrial applications.
Key features include adjustable output voltage, programmable switching frequency, and built-in soft-start functionality, which helps prevent inrush current at startup. The LM3488 also includes over-voltage protection, under-voltage lockout, and thermal shutdown, ensuring safe operation under various conditions.
Its current-mode control architecture supports better transient response and simplified compensation, making it easier to design stable power supplies. The LM3488MMX is commonly used in step-down (buck) converters but can also be adapted for other configurations. Overall, it provides an efficient and flexible solution for creating reliable and robust power management systems.

Equivalent

The LM3488MMX chip is a synchronous boost controller. Equivalent products include the LT1302 from Analog Devices, the TPS61040 from Texas Instruments, and the MAX8660 from Maxim Integrated. Other alternatives are the MIC2544 from Microchip and the NCP3065 from ON Semiconductor. Always verify specifications and application requirements before substituting components.

Features

The LM3488MMX is a versatile, high-performance voltage regulator designed for various applications. Key features include:
1. Wide Input Voltage Range: Accepts 2.9V to 40V, making it suitable for diverse power sources.
2. Adjustable Output Voltage: Allows flexibility with output voltage settings from 1.215V to 37V.
3. High Efficiency: Utilizes a PWM control scheme to enhance efficiency, reducing heat generation.
4. Current Limiting: Built-in current limiting for protection against overcurrent scenarios.
5. Thermal Shutdown: Offers thermal protection to prevent overheating and potential damage.
6. Compact Package: Available in a small footprint (MSOP-10), ideal for space-constrained applications.
7. Integrated Features: Includes soft-start capability and external compensation options for stability.
8. Synchronous Operation: Ensures improved efficiency and reduced ripple in output voltage.
These features make the LM3488MMX a reliable choice for power management in consumer electronics, industrial systems, and battery-powered devices.

Pinout

The LM3488MMX is a voltage regulator IC with a total of 20 pins. It is primarily used for power management in various applications, including LED drivers and power supplies. The main functions of its pins include:
1. Input Voltage (VIN): Power supply input.
2. Ground (GND): Common reference point.
3. SW (Switch): Output switch for the regulator.
4. FB (Feedback): Feedback pin for voltage regulation.
5. COMP (Compensation): Compensation network for stability.
6. ISEN (Current Sense): Current sensing input for overcurrent protection.
7. CSN (Current Sense Negative): Negative input for the current sense.
8. RT (Timing Resistor): Connects to a resistor for timing control.
9. SS (Soft Start): Soft start control pin to reduce inrush current.
10. VCC (Voltage Common Collector): Output for internal biasing.
11. PVIN (Power Input): Power input for the internal circuit.
12. DR (Driver): Gate driver for the external switch.
The remaining pins are typically used for additional features or signals, which can vary based on specific design requirements.

Manufacturer

The LM3488MMX is manufactured by Texas Instruments (TI), a global semiconductor company headquartered in Dallas, Texas. Texas Instruments specializes in designing and manufacturing a wide range of semiconductor and electronics solutions, including analog, digital signal processing (DSP), and microcontroller products. The company is well-known for its innovative technologies and products used in various applications, such as automotive, industrial, communications, and consumer electronics. Founded in 1930, TI has played a significant role in the development of the electronics industry and continues to be a leading provider of integrated circuits and other electronic components. Its commitment to research and development, along with a focus on high-performance semiconductor solutions, positions Texas Instruments as a key player in the global electronics market.

Application

The LM3488MMX is a high-performance voltage regulator primarily used in applications such as:
1. DC-DC Converters: It is suitable for buck, boost, or buck-boost converter designs.
2. Power Management Solutions: Utilized in power supplies for computers, telecommunications, and industrial equipment.
3. Battery Management Systems: Employed for charging and managing battery systems in portable devices and electric vehicles.
4. LED Drivers: Used in driving LEDs for lighting applications.
5. Consumer Electronics: Integrated into devices requiring efficient power regulation.
Its versatility and efficiency make it ideal for various demanding power management tasks.

Package

The LM3488MMX is available in an MSOP-8 package type. This compact surface-mount package is designed for space-constrained applications and features eight pins for electrical connections.