LM5020MM-2

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LM5020MM-2

IC REG CTRLR FLYBACK 10MSOP

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사양

Part Status Obsolete
Output Type Transistor Driver
Function Step-Up/Step-Down
Output Configuration Positive
Topology Flyback
Number of Outputs 1
Output Phases 1
Voltage - Supply (Vcc/Vdd) 8V ~ 15V
Frequency - Switching 200kHz ~ 630kHz
Duty Cycle (Max) 50%
Synchronous Rectifier No
Clock Sync Yes
Control Features Frequency Control, Soft Start
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package 10-VSSOP
Base Product Number LM5020

개요

Description

The LM5020MM-2 is a high-performance, current-mode PWM controller designed by Texas Instruments for use in various DC-DC converter applications. It is specifically tailored for applications requiring buck, boost, and flyback topologies. The device operates over a wide input voltage range, making it versatile for different power supply designs.
Key features include a 1.5A peak gate drive capability, allowing it to efficiently manage power transistors, and a high switching frequency up to 1 MHz, which enables the use of smaller external components and minimizes overall system size. It also integrates protection features like cycle-by-cycle current limiting, under-voltage lockout, and thermal shutdown to enhance system reliability.
The LM5020MM-2 is commonly chosen for its ability to maintain stability across a wide range of operating conditions, offering designers flexibility and robust performance. Its compact package and energy-efficient operation are ideal for space-constrained applications, such as telecommunications, industrial power supplies, and automotive systems.

Features

The LM5020MM-2 is a high-voltage, low-side N-channel MOSFET controller designed for use in a variety of power supply applications. Key features include:
1. Wide Input Voltage Range: It can handle input voltages from 6V to 60V, making it suitable for a broad range of applications.
2. Low Start-Up Current: The device features a low start-up current requirement, typically around 0.5 mA, which enhances efficiency during start-up phases.
3. High-Voltage Start-Up Regulator: It provides an internal start-up regulator to manage initial power-up conditions effectively.
4. Current-Mode Control: The LM5020MM-2 uses current-mode control, which offers advantages such as simple loop compensation and inherent pulse-by-pulse current limiting.
5. Adjustable Oscillator: The switching frequency can be adjusted with a single external resistor, providing design flexibility.
6. Slope Compensation: Integrated slope compensation can be adjusted, which is necessary for stability in high-frequency applications.
7. Cycle-by-Cycle Over-Current Protection: It features cycle-by-cycle current limiting to prevent damage due to over-current conditions.
8. Shutdown Functionality: A shutdown pin is available to put the device into a low-power mode, reducing power consumption when the circuit is not in use.
These features make the LM5020MM-2 suitable for efficient power supply designs in various electronic devices.

Package

The LM5020MM-2 is a high voltage current mode PWM controller packaged in an 8-pin MSOP (Mini Small Outline Package). This compact package is suited for space-constrained applications, offering efficient power management.

Pinout

The LM5020MM-2 is a high-performance PWM controller designed for high-frequency, off-line, and DC-DC wide input voltage range buck or boost converters. It typically comes in an 8-pin MSOP package. Here's a brief overview of its pin functions:
1. VCC: Provides power to the IC.
2. OUT: Gate drive output for the external MOSFET.
3. CS (Current Sense): Used for current limit detection.
4. COMP (Compensation): For compensation of the control loop.
5. FB (Feedback): Connects to the output voltage for regulation.
6. RT: Sets the oscillator frequency with an external resistor.
7. GND: Ground reference for the IC.
8. VIN: Input voltage supply for the IC.
The LM5020MM-2 is suitable for applications requiring efficient and precise power conversion with a wide input voltage range. It includes features like current mode control for better transient response and cycle-by-cycle current limiting.

Manufacturer

The LM5020MM-2 is manufactured by Texas Instruments. Texas Instruments, commonly known as TI, is an American technology company that designs and manufactures semiconductors and various integrated circuits. TI is primarily known for its products in the analog and embedded processing sectors, including chips used in calculators, digital signal processors, microcontrollers, and power management solutions. The company serves a wide range of industries, including automotive, industrial, personal electronics, communications equipment, and enterprise systems.

Application

The LM5020MM-2 is a high-voltage, low-side N-channel MOSFET controller used primarily in isolated and non-isolated DC-DC converter applications. It is suitable for use in telecom and industrial power supplies, distributed power systems, and battery-powered applications. Its key features like high efficiency, wide input voltage range, and robust protection mechanisms make it ideal for reliable power management in various demanding environments.

Equivalent

The LM5020MM-2 is a high-voltage, low-side, N-channel MOSFET controller designed for boost and flyback applications. Equivalent products, which serve similar functions, include:
1. UC3842 - A popular PWM controller for offline and DC-to-DC converter applications.
2. NCP1200 - A fixed-frequency PWM controller with a low standby power consumption.
3. TL494 - A versatile PWM controller used in various power supply applications.
4. MC34063 - A DC-to-DC converter controller for boosting, bucking, and inverting applications.
Always verify the specific application requirements and pin compatibility when considering alternatives.

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