LM5019MRX

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LM5019MRX

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規格

Brand Texas Instruments
Product Type Switching Voltage Regulators
Subcategory PMIC - Power Management ICs
Mounting Style SMD/SMT
Package / Case POWERPAD-8
Topology Buck
Product Voltage Regulators

概述

Description

The LM5019MRX is a high-performance, synchronous step-down (buck) regulator designed by Texas Instruments for converting a higher voltage input into a lower output voltage. It features a wide input voltage range of 4.5V to 60V, making it suitable for various applications, including industrial and automotive environments.
The LM5019MRX integrates a high-efficiency power stage with a fixed frequency of 100 kHz or 250 kHz, which helps maintain stable operation and reduces the need for external components. It offers adjustable output voltage with an ability to provide up to 2A of continuous output current. Key features include built-in protection mechanisms such as thermal shutdown, overcurrent protection, and under-voltage lockout, enhancing reliability.
The device's compact size and high efficiency (up to 90% or more) make it ideal for space-constrained designs. It supports a variety of output voltage configurations and can be used in applications ranging from LED drivers to battery management systems. Overall, the LM5019MRX is a versatile choice for efficient power management in demanding environments.

Features

The LM5019MRX is a high-voltage, step-down (buck) switching regulator designed for industrial applications. Its key features include:
1. Wide Input Voltage Range: Accepts input voltages from 4.5V to 100V, making it suitable for various power sources.
2. Adjustable Output Voltage: Configurable output voltage from 1.2V to 75V, providing flexibility for different applications.
3. High Efficiency: Delivers efficiencies up to 95% at full load, minimizing power loss and heat generation.
4. Built-in MOSFETs: Integrated high-side and low-side MOSFETs reduce component count and PCB space.
5. Frequency Synchronization: Supports frequency synchronization to an external clock for improved performance and reduced EMI.
6. Protection Features: Includes over-current, over-voltage, and thermal shutdown protection for robust operation.
7. Small Package: Available in a compact HTQFP-32 package, facilitating space-constrained designs.
Overall, the LM5019MRX is ideal for high-efficiency, space-sensitive applications in automotive and industrial sectors.

Package

The LM5019MRX is available in a 16-pin HTSSOP (Thin Shrink Small Outline Package) package type. This compact package design is suitable for applications requiring efficient power management in space-constrained environments.

Pinout

The LM5019MRX is a high-voltage, high-efficiency step-down (buck) regulator from Texas Instruments. It features a total of 16 pins.
Key functions of the pins include:
1. VIN: Input voltage supply.
2. GND: Ground connection.
3. SW: Switch node for the buck converter.
4. CSN/ CSP: Current sense inputs.
5. COMP: Compensation network connection for stability.
6. RAMP: Voltage ramp for pulse-width modulation (PWM).
7. FB: Feedback voltage input for regulation.
8. RT: Timing resistor input for setting frequency.
9. SS/SD: Soft-start and shutdown control.
10. VCC: Output voltage for internal circuitry.
11. NC: No connect (not internally connected).
12. SYNC: Frequency synchronization input.
13. PG: Power good output.
14. ISEN: Current sense input.
15. EN: Enable pin to turn the device on/off.
16. CT: Capacitor timing for frequency control.
The LM5019MRX is ideal for applications requiring high efficiency and wide input voltage ranges.

Manufacturer

The LM5019MRX is manufactured by Texas Instruments (TI), a leading semiconductor company. Texas Instruments is known for designing and producing a wide range of electronic components, including analog chips, embedded processors, and digital signal processors. The company primarily serves markets such as automotive, industrial, communications, and consumer electronics. Established in 1930, TI is recognized for its innovation and technological advancements, focusing on enabling efficient and effective electronic solutions. The LM5019MRX itself is a power management IC designed for high-efficiency power conversion applications, showcasing TI's expertise in power electronics.

Application

The LM5019MRX is a high-efficiency, isolated DC-DC converter designed for applications such as industrial power supplies, telecom infrastructure, LED lighting, and battery-powered devices. It is suitable for use in power management systems where isolation and high voltage inputs are required, including medical devices, automotive systems, and renewable energy solutions. Its capability to handle wide input voltage ranges makes it versatile for various power conversion needs.

Equivalent

The LM5019MRX is a high-voltage, synchronous buck regulator. Equivalent products include:
1. TPS563201 - Texas Instruments
2. LT8609 - Analog Devices
3. LM2596 - Texas Instruments (less efficient)
4. MAX5035 - Maxim Integrated
Always check specific datasheets for compatibility in terms of voltage, current ratings, and efficiency.

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