How LTM8022 μModule Regulator Provides a Better Design for Power Supply?

Without sufficient design resources to layout and test switching power supply circuits, is there any other way besides using switching regulators? At this time, we can consider the μModule regulator, which can make power supply development fast and simple. So, is there any recommended μModule regulator? What are their functions and actual operations? This blog will provide specific usage and related detailed instructions of the three most suitable regulators to help those customers who need to choose a specific model of μModule regulator to make a better choice. If this blog is helpful to you, don't forget to share it!

Content

Why is it Recommended to Use μModule Regulators?

What is the Composition of LTM8020?

What is the Operation and Function of LTM8022?

For Higher Power, Choose LTM8023

Why is it Recommended to Use μModule Regulators?

Like any other system, switching power supplies require component selection, derating, simulation, prototyping, board layout, analysis and design verification testing. 

Design engineers should focus on the guts of the new whiz-bang gadget, not the power supply to run it. 

The LTM8020, LTM8022 and LTM8023 are three μModule regulators that require minimal design effort and only a few inexpensive passive components to make a complete power supply. 

The modules are small, accept a wide input operating range and can produce 0.2A, 1A and 2A, respectively. 

Simplify Power with µModule Regulators.

Tiny, Self-Contained 200mA Power Supply The LTM8020 is small, with a package measuring only 6.25mm × 6.25mm × 2.32mm, but it accepts a wide 4V to 36V input voltage range, and can produce up to 1W for output voltages between 1.25V and 5V at 200mA. 

At light loads, Burst Mode operation keeps quiescent current to 50μA at no load. The current draw is less than 1μA when shut down. 

  

Figure 1. Generate 3.3V at 200mA with the LTM8020, two caps and a resistor.

What is the Composition of LTM8020?

As seen in Figure 1, a complete LTM8020 power supply requires only an input capacitor, output capacitor and a single resistor to set the output voltage. Generate 3.3V at 200mA with the LTM8020, two caps and a resistor. 

Negative Power Supply with Few Components Being a self-contained design, the LTM8020 can be easily configured to generate a negative voltage. 

Figure 2 shows an example of how to use the LTM8020 to generate –5V at 85mA from an input range of 4.5V to 30V. The part does not operate as a true buck converter in this configuration, so the maximum output current is less than that achievable in the buck configuration. 

Figure 2. The LTM8022 boasts a wider input range, 3.6V–36V, and output range, 0.8V–10V, for loads up to 1A.

What is the Operation and Function of LTM8022?

A simple reconfiguration of the μModule generates a negative output. If You Need More Power… The LTM8022 comes in a larger 11.25mm × 9mm × 2.82mm package than the LTM8020, but boasts a wider input range, 3.6V–36V, and output range, 0.8V–10V, for loads up to 1A. 

It also includes more control features, including a RUN/SS pin, synchronization, user-adjustable switching frequency and a SHARE pin for paralleling modules. 

The LTM8022 also employs Burst Mode operation, drawing only 50μA quiescent current at no load while maintaining only 30mV of output voltage ripple. Like the LTM8020, the quiescent current when shut down is less than 1μA. 

The schematic is very simple, with examples of 3.3V and 8V output designs shown in Figures 3 and 4, respectively.  Produce 3.3V at 1A with LTM8022 and just four passive components.  The LTM8022 can produce 8V, too.

 

          

Figures 3 and 4. The schematic is very simple, with examples of 3.3V and 8V output designs.

For Higher Power, Choose LTM8023

…Or, Even More Power… The LTM8023 is the big brother of the LTM8022, capable of producing up to 2A of output current. The LTM8023 has the same input, output voltage range, and control features as the LTM8022. 

It also features Burst Mode operation and low quiescent current. The LTM8022 and LTM8023 share the same footprint and pin pattern, so even if you start a design with the LTM8022 but later find that you need more current, you can simply drop in the LTM8023. 

In most cases, the design will use identical passive components as the LTM8022, as seen in the 3.3V example in Figure 5. The LTM8023 produces 3.3V at 2A with the same footprint and components required for the LTM8022 producing 1A.

 

Figure 5. The LTM8023 produces 3.3V at 2A with the same footprint and components required for the LTM8022 producing 1A.

Conclusion

This blog introduces the composition, operation, and basic functions of three different types of μModule regulators, which is LTM8020, LTM8022, and LTM8023. I bet you can find what you need most by reading the above when choosing one of the μModule regulators mentioned above. And if you need more technical info about μModule regulators, please feel free to leave your comment below, we will reply to you as soon as possible. And don't forget to share this blog if it is much helpful to you!

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Frequently Asked Questions

1. Q: What is a Voltage Regulator?

A: voltage regulator, any electrical or electronic device that maintains the voltage of a power source within acceptable limits. The voltage regulator is needed to keep voltages within the prescribed range that can be tolerated by the electrical equipment using that voltage.

2. Q: What is the Difference between a Regulator and a Controller?

A: A voltage regulator produces a stable output voltage that has a small variance over a range of load and input conditions. A controller is a device that monitors and modifies the state of a dynamic system.

3. Q: What is the Power Supply Used for?

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● How LTM8025 μModule Converter Works Better in III Applications?

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