Part Number: LM5008MMX/NOPB

Manufacturer: Texas Instruments

Description: IC REG BUCK ADJ 350MA 8VSSOP

Shipped from: Shenzhen/HK Warehouse

Stock Available: Check with us

Technical Specifications of LM5008MMX/NOPB

Datasheet  LM5008MMX/NOPB datasheet
Category Integrated Circuits (ICs)
Family PMIC – Voltage Regulators – DC DC Switching Regulators
Manufacturer Texas Instruments
Packaging Tape & Reel (TR)
Part Status Active
Function Step-Down
Output Configuration Positive
Topology Buck
Output Type Adjustable
Number of Outputs 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
Synchronous Rectifier No
Operating Temperature -40°C ~ 125°C (TJ)
Mounting Type Surface Mount
Package / Case 8-TSSOP, 8-MSOP (0.118″, 3.00mm Width)
Supplier Device Package 8-VSSOP

LM5008MMX/NOPB Introduction

The LM5008MMX/NOPB is a flexible and efficient buck-switching regulator integrated circuit (IC). It has a maximum output current of 350 mA and a positive output voltage of 2.5 volts that can be changed. This article is a complete guide to learning and using the LM5008MMX/NOPB. It goes over its features, pinout, electrical properties, and application considerations.

Overview of the LM5008MMX/NOPB

The LM5008MMX/NOPB is a buck switching regulator IC that is made to provide a positive output voltage that is both efficient and flexible. It comes in two small packages: the 8-TSSOP (Thin Shrink Small Outline Package) or the 8-MSOP (Mini Small Outline Package), which is only 0.118 inches (3.00mm) wide.

The key features and advantages of the LM5008MMX/NOPB

  • Buck Switching Regulator: The LM5008MMX/NOPB is a step-down (buck) switching regulator that efficiently changes a higher input voltage to a lower output voltage. Because of this, it can be used in situations where power needs to be changed or regulated.
  • Adjustable Output Voltage: The IC lets you change the output voltage, giving you the freedom to meet the voltage needs of a particular application. The output voltage of the LM5008MMX/NOPB can go as low as 2.5 volts.
  • High efficiency: The LM5008MMX/NOPB uses a synchronous buck design, which reduces the amount of power lost and makes the device more efficient overall. This function is especially helpful for systems that run on batteries or applications that need to be energy efficient.
  • Wide Input Voltage Range: The IC can work with a wide range of input voltages, usually from a few volts to tens of volts. This makes it work with many different power sources.
  • Current Reduction and Protection: The LM5008MMX/NOPB has built-in features for reducing the amount of current and protecting against damage caused by overheating or too much current.
  • Options for Compact Packages: The LM5008MMX/NOPB comes in 8-TSSOP and 8-MSOP packages, which are small and good for applications with limited room.
  • Industrial-Grade Reliability: The LM5008MMX/NOPB is made to meet strict industrial standards, which means it will work well and last for a long time even in tough circumstances.

Electrical Characteristics

  • Range of Input Voltage: The LM5008MMX/NOPB has a wide range of input voltage, usually from 6V to 75V. This means that the IC can be used in a number of ways that need to change the voltage from a higher source.
  • Range of Output Voltage: The LM5008MMX/NOPB has a variable output voltage that can be set as low as 2.5 volts.The real output voltage range will depend on the application and the values chosen for the feedback resistors in the voltage divider network connected to the FB pin.
  • Maximum Output Current: The LM5008MMX/NOPB can send out a current of up to 350 mA at its most. It is important to make sure that the load attached to the regulator doesn’t draw more current than this limit. If it does, the IC could get damaged, and the regulator wouldn’t work right.
  • Switching Frequency: An external resistor attached to the RT pin can be used to set the switching frequency of the LM5008MMX/NOPB. Most of the time, it works at frequencies between 100 kHz and 1 MHz. The trade-off between efficiency, component size, and output voltage noise is affected by the choice of switching frequency.
  • Efficiency and Power Dissipation: The LM5008MMX/NOPB is made so that buck conversion applications can get great efficiency. The regulator’s efficiency varies depending on a number of things, like the input voltage, output voltage, output current, and load conditions. It is best to look at the LM5008 datasheet for exact calculations and detailed efficiency curves for your application.

The input voltage, the output voltage, the output current, and the performance of the LM5008MMX/NOPB all affect how much power it wastes. To make sure that the IC works within its stated temperature limits, it is important to use the right heat sinking and thermal management methods. The datasheet tells you how to figure out power dissipation and temperature for different operating situations.

Inductor Selection

Think about the following when choosing an inductor for the LM5008MMX/NOPB:

  • Value of Inductance: Choose an inductor with the right value based on the output current and ripple current you want.
  • Saturation Current: To keep the core from getting too hot, make sure that the inductor’s saturation current value is higher than the maximum current you expect.
  • Resistance: Choose an inductor with low DC resistance to keep power losses to a minimum and increase efficiency.
  • Size and box: Think about the physical size and type of box of the inductor to make sure it fits on the PCB.
  • Quality of the Inductor: For the best performance and economy, choose high-quality inductors with low magnetic and core losses.

 LM5008MMX/NOPB Typical Applications

The LM5008MMX/NOPB buck switching regulator IC is used in many places where voltage needs to be changed and controlled efficiently. Here are some common places to use it:

Step-Down Voltage Conversion

Step-down voltage conversion is a popular use for the LM5008MMX/NOPB. This is when a higher input voltage needs to be changed to a lower output voltage. This includes things like powering gadgets with low voltage from sources with higher voltage.

  • DC-DC converters are used in cars.
  • Control and automation tools for industry
  • Power sources that are spread out.

Power Supply Modules

The LM5008MMX/NOPB can be used in power supply modules to give different parts or sections stable, regulated power. It has benefits like being very efficient, small, and having an output power that can be changed. Power supply modules for telecommunications tools are a good example.

  • Systems that are built into boards with microcontrollers.
  • There are consumer devices and audio amplifiers.
  • There are many uses for LED lights.

Battery-Powered Systems

The LM5008MMX/NOPB is a good choice for battery-powered systems because it is efficient and can work with a wide range of input voltages. It makes it easier to convert power and makes batteries last longer. Portable gadgets like smartphones, tablets, and wearables are all examples of battery-powered apps.

  • Industrial sensors and monitoring devices that run on batteries
  • There are electric cars and hybrid cars.
  • Batteries are used to store energy from renewable sources.

These are just a few of the many ways the LM5008MMX/NOPB can be used. It can be used in a wide range of electrical systems that need reliable and efficient power conversion because it is flexible, efficient, and has an output voltage that can be changed.


In conclusion, the LM5008MMX/NOPB is a flexible and efficient buck-switching regulator IC. It has options for a small size and a variable output voltage. It can be used for step-down voltage conversion, power source modules, and battery-powered systems, among other things. Integration works well when things like the choice of inductors and capacitors, feedback components, and thermal control are carefully thought out. It is important to look at the LM5008 datasheet for full specifications and design instructions. Contact our experts at ICRFQ for personalised help and to find out what it can do.

4.8/5 - (397 votes)
Kevin Chen