LM5022MM

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LM5022MM

IC REG CTRLR BOOST/SEPIC 10MSOP

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規格

Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Not For New Designs
OutputType Transistor Driver
Function Step-Up, Step-Up/Step-Down
OutputConfiguration Positive
Topology Boost, SEPIC
NumberofOutputs 1
OutputPhases 1
Voltage-Supply(Vcc/Vdd) 6V ~ 60V
Frequency-Switching 200kHz ~ 990kHz
DutyCycle(Max) 95%
SynchronousRectifier No
ClockSync Yes
ControlFeatures Frequency Control, Soft Start
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case 10-TFSOP, 10-MSOP (0.118, 3.00mm Width)

概述

Description

The LM5022MM is a high-performance, high-voltage, low-side N-channel MOSFET controller designed for boost or flyback power converters in various applications. Manufactured by Texas Instruments, it is part of their LM5022 series. This controller is suitable for applications requiring step-up voltage conversion, such as battery-powered systems, LED drivers, and telecom power supplies.
Key features include a wide input voltage range (from 4.5 V to 60 V), enabling flexibility in different power environments. It operates in a current-mode control scheme providing fast transient response and cycle-by-cycle current limiting. The LM5022MM integrates a high-voltage startup regulator, precision reference, and an error amplifier, facilitating easier design and reduced component count.
The device also offers programmable switching frequency, allowing optimization of efficiency and size. Additional protection features include thermal shutdown, undervoltage lockout, and cycle-by-cycle overcurrent protection, enhancing reliability in demanding conditions. Available in a compact MSOP-8 package, the LM5022MM is ideal for compact designs where space is a constraint.

Features

The LM5022MM is a high-efficiency, wide-input voltage range boost controller designed for DC-DC conversion applications. Key features include:
1. Wide Input Voltage Range: It supports a broad input voltage range from 4.5V to 60V, making it versatile for various applications.
2. High Switching Frequency: The controller operates at a programmable switching frequency up to 1 MHz, allowing for smaller external components and improved transient response.
3. Current Mode Control: This feature provides improved line regulation and simplifies loop compensation, enhancing stability and performance.
4. Efficiency: The LM5022MM supports high efficiency across a wide load range, ideal for battery-powered devices and power-sensitive applications.
5. Soft-Start Capability: An adjustable soft-start function reduces inrush current during startup, protecting the system from damage.
6. Programmable UVLO: It offers programmable under-voltage lockout to protect the device from operating below a specified threshold.
7. Thermal Protection: Integrated thermal shutdown protects the device from overheating, ensuring reliability under various operating conditions.
8. Compact Package: The device is available in a small, thermally enhanced MSOP-8 package, suitable for space-constrained designs.
These features make the LM5022MM suitable for applications such as telecommunications, automotive, and industrial power systems.

Package

The LM5022MM is a high-voltage boost controller typically used in power management applications. It comes in a MSOP-8 (Mini Small Outline Package) package type, which is compact and suitable for space-constrained designs.

Pinout

The LM5022MM is an 8-pin integrated circuit designed for use in boost or flyback converter applications. Here’s a concise overview of its pin functions:
1. VIN (Pin 1): Input voltage pin for the IC. It supplies power to the internal circuitry.
2. NC (Pin 2): No connection.
3. COMP (Pin 3): Compensation pin for the error amplifier, used for frequency compensation.
4. FB (Pin 4): Feedback pin, used to sense the output voltage for regulation.
5. RT/SD (Pin 5): Sets the oscillator frequency via a resistor to ground; can also be used to shut down the IC.
6. GND (Pin 6): Ground connection.
7. DRV (Pin 7): Gate drive output pin that drives the external MOSFET.
8. ISEN (Pin 8): Current sense pin, used for peak current mode control.
This configuration allows the LM5022MM to efficiently control power conversion in boost converter designs, providing essential functions such as voltage regulation, current limiting, and frequency setting.

Manufacturer

The LM5022MM 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. It is one of the largest semiconductor companies in the world. TI is well-known for developing analog chips and embedded processors and has a strong presence in the electronics industry, supplying components for various applications including consumer electronics, industrial equipment, automotive systems, and more. Texas Instruments is focused on innovation and engineering excellence, providing solutions that help customers design and create electronic systems efficiently.

Application

The LM5022MM is a high-voltage, low-side N-channel MOSFET controller used primarily in non-isolated boost, flyback, SEPIC, and forward converter applications. It's ideal for power supply designs requiring high efficiency and compact size, such as LED drivers, battery-powered systems, and distributed power architectures. Its ability to operate in a wide input voltage range makes it suitable for automotive, industrial, and telecommunications applications where regulated power conversion and high performance are crucial.

Equivalent

The LM5022MM is a high-voltage boost controller. Equivalent products include:
1. LT3759 - A high-voltage boost, flyback, SEPIC, and inverting DC/DC controller.
2. TPS40210 - A wide-input voltage boost controller from Texas Instruments.
3. MIC38C42 - A current mode PWM controller.
4. UC3843 - A current-mode PWM controller suitable for boost applications.
These alternatives might vary in specific features, so ensure the selected component matches your application requirements.

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