LM5008MM

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LM5008MM

IC REG BUCK ADJ 350MA 8VSSOP

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  • Fr. Teil #LM5008MM
  • Paket VSSOP (DGK)-8
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Spezifikationen

Package Tape & Reel (TR),Cut Tape (CT),Bulk
ProductStatus Not For New Designs
Function Step-Down
OutputConfiguration Positive
Topology Buck
OutputType Adjustable
NumberofOutputs 1
Voltage-Input(Min) 9.5V
Voltage-Input(Max) 95V
Voltage-Output(Min/Fixed) 2.5V
Voltage-Output(Max) 75V
Current-Output 350mA
Frequency-Switching 50kHz ~ 600kHz
SynchronousRectifier No
OperatingTemperature -40°C ~ 125°C (TJ)
MountingType Surface Mount
Package/Case 8-TSSOP, 8-MSOP (0.118, 3.00mm Width)

Übersicht

Description

The LM5008MM is a step-down switching voltage regulator designed by Texas Instruments. It is part of the LM5000 series, which is known for its high efficiency and compact size, suitable for applications requiring high voltage conversion. The LM5008MM can handle an input voltage range typically between 9 V to 95 V and provides a regulated output voltage, making it ideal for use in industrial and automotive environments where such wide voltage ranges are common.
Key features include a constant on-time control scheme for fast transient response, integrated high-side FET, and a switching frequency that can go up to 1 MHz, all contributing to high efficiency and reduced component size. The device also includes various protections, such as thermal shutdown and current limiting, to ensure reliable operation. It is typically used in applications like power supply regulation, telecom power management, and distributed power systems. The LM5008MM comes in a small surface-mount package, making it easy to integrate into PCB designs while minimizing space requirements.

Features

The LM5008MM is a step-down switching regulator from Texas Instruments, designed for high-efficiency applications. Key features include:
1. Wide Input Voltage Range: It operates from 9V to 95V, making it suitable for use in a variety of applications, including industrial and automotive environments.
2. Integrated Switch: The device incorporates a 100V N-channel MOSFET, which simplifies the design and reduces the need for external components.
3. Adjustable Output Voltage: The LM5008MM allows the user to set the output voltage with an external resistor divider, providing flexibility in design.
4. High Efficiency: It offers efficiency up to 90%, which aids in reducing heat dissipation and improving overall system performance.
5. Switching Frequency: The regulator operates at a constant switching frequency of 300 kHz, which helps in reducing noise and achieving a compact design.
6. Current Limit Protection: It includes a cycle-by-cycle current limit to protect against overcurrent conditions.
7. Thermal Shutdown: The device features thermal shutdown protection to prevent damage from overheating.
These features make the LM5008MM ideal for a range of applications, including power supply regulation in distributed power systems and battery-powered devices.

Package

The LM5008MM is a DC-DC converter from Texas Instruments, typically available in a Mini SO-8 (MSOP-8) package.

Pinout

The LM5008MM is a high-voltage step-down switching regulator featuring a pin count of 8. Here is a brief overview of its pin functions:
1. VIN (Pin 1): Input voltage pin, where the supply voltage is connected.
2. SW (Pin 2): Switch node, connected to the inductor and diode.
3. BST (Pin 3): Boost pin, used for the bootstrap capacitor to drive the gate of the internal high-side MOSFET.
4. RCL (Pin 4): Current limit pin, allows setting of the peak current limit by connecting a resistor.
5. FB (Pin 5): Feedback pin, used to set the output voltage via a resistor divider network.
6. RT (Pin 6): Frequency set pin, used to set the switching frequency with an external resistor.
7. GND (Pin 7): Ground pin, the reference point for all voltage measurements.
8. UVLO (Pin 8): Undervoltage lockout pin, used for setting the input voltage threshold for turn-on and turn-off.
This IC is designed for applications requiring efficient voltage regulation with integrated features for current limiting and thermal protection.

Manufacturer

The LM5008MM is manufactured by Texas Instruments. Texas Instruments (TI) is a global semiconductor company that designs and produces a wide array of integrated circuits and electronic components. TI is known for its innovations in analog and embedded processing solutions, serving various markets including industrial, automotive, personal electronics, and communications. The company is headquartered in Dallas, Texas, and is one of the oldest and largest semiconductor manufacturers in the world.

Application

The LM5008MM is a step-down voltage regulator designed for applications requiring efficient power conversion from higher voltages to lower voltages. It is suitable for use in telecommunications, industrial systems, automotive electronics, and distributed power systems. It can be used in battery-powered devices, LED drivers, and any application needing a compact, high-performance power supply solution. Its wide input voltage range and high efficiency make it ideal for use in scenarios requiring reliable power regulation in challenging environments.

Equivalent

The LM5008MM is a step-down switching regulator from Texas Instruments. Equivalent products could include:
1. LM2575 - A widely used step-down voltage regulator with similar specifications.
2. MC34063 - A versatile DC-DC converter IC that can be used in step-down applications.
3. LM2596 - Another popular step-down voltage regulator with comparable features.
4. LT1933 - A step-down regulator from Analog Devices with similar functionality.
Ensure to check the specific electrical characteristics and application requirements as substitutes may have differences in pin configuration or performance.

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